From dc7b224005a005effd75edf2d40db6874de70799 Mon Sep 17 00:00:00 2001 From: Raincloud Date: Mon, 16 Feb 2026 00:09:06 -0700 Subject: [PATCH] adjust stopping behavior --- ...ck-files-py-small-output-error-handling.md | 1666 +++++++++++++++++ encode_VOD_pyro.py | 37 +- ffmpeg_distributed.py | 88 +- 3 files changed, 1749 insertions(+), 42 deletions(-) diff --git a/.specstory/history/2026-01-21_08-11Z-check-files-py-small-output-error-handling.md b/.specstory/history/2026-01-21_08-11Z-check-files-py-small-output-error-handling.md index 3534357..5b3aae8 100644 --- a/.specstory/history/2026-01-21_08-11Z-check-files-py-small-output-error-handling.md +++ b/.specstory/history/2026-01-21_08-11Z-check-files-py-small-output-error-handling.md @@ -16219,3 +16219,1669 @@ So: **`-threads 0` is set.** Low CPU use with libaom is partly “how AV1 (libao --- +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt we need a better way to cancel a job; ctrl C terminate batch job does not actually kill the ffmpeg instances on all workers. + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user wants a cleaner way to cancel a distributed encode job. When they press Ctrl+C, the batch job asks "Terminate batch job (Y/N)?" but the remote ffmpeg instances (running via SSH on Pyro, RenderScrap, GuiltsCurse, PostIrony, Godzilla) don't get killed - they keep running. + +So we need to: +1. Handle SIGINT (Ctrl+C) in the Python script so we can cleanly shut down +2. When shutting down: stop all TaskThreads (they already have stop() which sets _should_stop and calls _ffmpeg.stop()), and importantly we need to actually terminate the child processes (reader + encoder/SSH) so that remote ffmpeg jobs die + +Let me look at how the script is structured - the main encode() spawns threads, and each thread runs reader_proc (local ffmpeg) and self._ffmpeg (FFMPEGProc - either local or ssh+ffmpeg). When we Ctrl+C, the main process gets the signal; we need to: +1. Catch KeyboardInterrupt / SIGINT in the main script +2. Call stop() on all threads so they set _should_stop and stop the current FFMPEGProc +3. The threads might be blocked on task_queue.get() or on self._ffmpeg.run() - so stopping the FFMPEGProc should unblock run() and then the thread sees _should_stop and exits. But the remote SSH process - when we kill the local parent (the one that runs ssh), does the remote ffmpeg get killed? When you kill an SSH client, the remote shell and its child (ffmpeg) typically get SIGHUP and die. So if we terminate the encoder_cmd process (the Popen that runs ssh ... ffmpeg), the SSH connection closes and the remote ffmpeg should get SIGHUP. So the key is making sure we actually terminate that process. + +Let me check FFMPEGProc and how stop() works, and how the main encode() joins the threads. +
 + +--- + + +Checking how the encode loop and process lifecycle handle shutdown: + + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "stop|SIGINT|KeyboardInterrupt|join|finally", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "stop|SIGINT|KeyboardInterrupt|join|finally", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "ffmpeg_distributed.py", + "matches": [ + { + "lineNumber": 12, + "content": "from signal import signal, SIGINT" + }, + { + "lineNumber": 14, + "content": "from shlex import split, join" + }, + { + "lineNumber": 43, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 66, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 77, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 153, + "content": " self._should_stop = False" + }, + { + "lineNumber": 162, + "content": " def stop(self):" + }, + { + "lineNumber": 163, + "content": " self._should_stop = True" + }, + { + "lineNumber": 198, + "content": " while self._proc.poll() is None and not self._should_stop:" + }, + { + "lineNumber": 233, + "content": " while self._proc.poll() is None and not self._should_stop:" + }, + { + "lineNumber": 235, + "content": " reader.join(timeout=2)" + }, + { + "lineNumber": 236, + "content": " self.stderr = ''.join(stderr_lines)" + }, + { + "lineNumber": 257, + "content": " self._should_stop = False" + }, + { + "lineNumber": 271, + "content": " def stop(self):" + }, + { + "lineNumber": 272, + "content": " self._should_stop = True" + }, + { + "lineNumber": 274, + "content": " self._ffmpeg.stop()" + }, + { + "lineNumber": 287, + "content": " while not self._should_stop:" + }, + { + "lineNumber": 306, + "content": " encoder_cmd = ['ssh', '-o', 'ConnectTimeout=15', self._host, join(encoder_cmd)]" + }, + { + "lineNumber": 317, + "content": " finally:" + }, + { + "lineNumber": 397, + "content": " print('Got SIGINT, stopping...')" + }, + { + "lineNumber": 399, + "content": " thread.stop()" + }, + { + "lineNumber": 401, + "content": " thread.join()" + }, + { + "lineNumber": 404, + "content": " signal(SIGINT, sigint)" + }, + { + "lineNumber": 409, + "content": " thread.join()" + }, + { + "lineNumber": 413, + "content": " f.write('\\n'.join([f\"file '{fpath}'\" for fpath in sorted(glob(f'{tmp_dir}/*.ts'))]))" + }, + { + "lineNumber": 426, + "content": " tqdm.write('Concat ffmpeg: ' + ' '.join(join([x]) for x in concat_cmd), file=stderr)" + } + ] + } + ], + "totalLines": 26, + "totalMatchedLines": 26 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I see there's already a SIGINT handler that calls thread.stop() and thread.join(). But: +1. FFMPEGProc.stop() only sets _should_stop = True - it doesn't actually kill the process (self._proc). So the Popen (which is the SSH process for remote, or ffmpeg for local) keeps running. +2. When we set _should_stop, the poll loop in FFMPEGProc.run() will exit when it sees _should_stop, but then it does communicate(timeout=1) which might wait for the process. We need to actually terminate the process. + +So the fix is: +1. In FFMPEGProc.stop(): also terminate the process if it exists (self._proc). So we need to add something like: if getattr(self, '_proc', None) is not None: self._proc.terminate() or self._proc.kill(). But _proc is only set when run() is called, so we need to be careful - stop() might be called from another thread while run() is in the poll loop. So we should set _should_stop = True and also if we have _proc, call _proc.terminate(). That way the subprocess gets SIGTERM and the poll() in the loop will return None then eventually poll() will return non-None when the process exits. +2. We also have the reader_proc in TaskThread - when we stop the thread we stop _ffmpeg but the reader_proc might still be running (it's feeding the encoder). When the encoder (ssh/ffmpeg) is killed, the reader's stdout pipe will break and it might get SIGPIPE when writing. But we should also terminate reader_proc in TaskThread when we stop. So TaskThread.stop() should: set _should_stop, call _ffmpeg.stop() (which will terminate the encoder process), and we need to also terminate reader_proc. But reader_proc is only set inside the loop when we're running a task - we don't store it on self. So we'd need to store the current reader_proc on the thread so we can terminate it on stop(). Let me look at the TaskThread run loop again. + +Actually re-reading the code: when _ffmpeg.stop() is called, it sets _should_stop and... doesn't terminate _proc. So the poll loop in run() will exit because _should_stop is True, but the _proc (ssh + remote ffmpeg) is still running. We need FFMPEGProc to actually terminate _proc in stop(). So: +- FFMPEGProc.stop(): set _should_stop = True, and if hasattr(self, '_proc') and self._proc is not None and self._proc.poll() is None: self._proc.terminate(). Then the next time the poll loop checks self._proc.poll() it might see that the process exited. Good. + +For the reader_proc: it's created in the loop and its stdout is connected to the encoder's stdin. When we terminate the encoder (ssh), the reader will get a broken pipe when writing. So it might exit on its own, or it might hang. To be safe we should keep a reference to the current reader_proc in TaskThread and terminate it in stop(). So in the run() loop we have reader_proc = Popen(...). We need self._reader_proc = reader_proc at the start of the try for the current task, and in stop() we do if getattr(self, '_reader_proc', None) and self._reader_proc.poll() is None: self._reader_proc.terminate(). And clear _reader_proc when the task ends. Let me implement. + +Also: the batch file. When you run a .bat and press Ctrl+C, Windows might send the signal to the batch interpreter which then asks "Terminate batch job?". The Python process might not receive SIGINT immediately or the way we expect. So we need to make sure the Python script handles KeyboardInterrupt. In Python, Ctrl+C raises KeyboardInterrupt in the main thread. So we need a try/except KeyboardInterrupt in the main encode() that calls the same cleanup (stop all threads, join). Let me check - we have signal(SIGINT, sigint). On Windows, does SIGINT get raised on Ctrl+C? I think on Windows, Ctrl+C can cause SIGINT but it's not always the case - sometimes it's handled by the console and not delivered to the process. So we need both: the signal handler for Unix (and Windows if it works), and a try/except KeyboardInterrupt around the thread start/join so that when the main thread gets KeyboardInterrupt we do the same cleanup. Let me read the exact flow of encode() where threads are started and joined. +
 + +--- + + + + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +Now I understand. The issue is: + +1. **FFMPEGProc.stop()** only sets `_should_stop = True`. It does NOT terminate `self._proc`. So when we Ctrl+C, the signal handler calls thread.stop() -> _ffmpeg.stop(), and the encoder's poll loop in run() will exit because _should_stop is True, but the actual SSH/ffmpeg process (_proc) is never killed. So the remote ffmpeg keeps running. + +2. **TaskThread** has reader_proc which is a local variable in the loop - we don't store it on self, so we can't terminate it from stop(). When we kill the encoder process, the reader's stdout is connected to the encoder's stdin - when encoder dies, the reader will get SIGPIPE on next write and typically exit. So reader might die on its own. But to be safe we could store self._reader_proc and terminate it in stop(). + +So the main fix is: **FFMPEGProc.stop()** must terminate the subprocess. Add: +```python +def stop(self): + self._should_stop = True + if getattr(self, '_proc', None) is not None and self._proc.poll() is None: + self._proc.terminate() +``` +That way when the signal handler runs, we tell the FFMPEGProc to stop and it will kill the encoder process (the SSH process). When SSH dies, the remote ffmpeg will get SIGHUP and die. Good. + +We should also store reader_proc on the thread so we can kill it: self._reader_proc = reader_proc at the start, and in stop() do if getattr(self, '_reader_proc', None) and self._reader_proc.poll() is None: self._reader_proc.terminate(). And set self._reader_proc = None when we're done with the task (in finally). That way when we stop(), we kill both the reader and the encoder. + +On Windows: Ctrl+C might not deliver SIGINT to Python when running under a .bat - the batch interpreter can catch it first and show "Terminate batch job?". So we should also wrap the thread start/join in try/except KeyboardInterrupt so that when the user presses Ctrl+C and Python does get KeyboardInterrupt (e.g. when run from PowerShell or when the batch passes it through), we do the same cleanup. And we could use a wrapper that on both SIGINT and KeyboardInterrupt does the cleanup and then re-raises or exits. Let me implement: + +1. FFMPEGProc.stop(): add _proc.terminate() if _proc exists and is running. +2. TaskThread: store _reader_proc when we create it, clear in finally; in stop() also terminate _reader_proc if set. +3. In encode(): wrap the thread start/join in try/except KeyboardInterrupt and do the same cleanup as sigint (stop all threads, join, then exit(1) or re-raise). So we have a helper _stop_all() that stops and joins all threads, and both the signal handler and the except block call it. +
 + +--- + + +Implementing proper cleanup: terminating encoder and reader processes on Ctrl+C and handling KeyboardInterrupt when run from a batch. + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Wait, I made an error in the finally block. I'm setting self._reader_proc = getattr(self, '_reader_proc', None) which just gets the current value - but we already have reader_proc as the variable. The issue is we need to clear self._reader_proc at the end so that the next iteration or stop() doesn't try to kill an already-dead process. So the finally should just use the local reader_proc for wait/terminate (we already have it as self._reader_proc since we assigned reader_proc = ... but we changed it to self._reader_proc = Popen(...). So in finally we have self._reader_proc. Let me fix: we need to keep a reference for the wait, then set self._reader_proc = None. So: + +finally: + rp = getattr(self, '_reader_proc', None) + if rp is not None: + try: + rp.wait(timeout=2) + except TimeoutExpired: + rp.terminate() + rp.wait(timeout=5) + self._reader_proc = None + +That way we clear _reader_proc after we're done so stop() won't try to terminate an already-finished process. Let me fix the finally block - I had set self._reader_proc = None at the end but the middle part used self._reader_proc which we might have set to None in stop(). So actually in stop() we do _reader_proc.terminate() and then the thread continues - when the thread's run() gets out of the run() call it will hit the finally and try to wait. So we need to use a local variable in finally for the wait, then clear self._reader_proc. Let me read the current state of the file. +
 + +--- + + +Fixing the finally block: we'll use a local reference for wait/terminate, then clear `self._reader_proc`. + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Now add try/except KeyboardInterrupt so that when running under a .bat, if Python gets KeyboardInterrupt we do the same cleanup. And ensure the signal handler is robust on Windows (SIGINT might not be delivered in all cases). +
 + +--- + + +Wrapping the thread loop in a try/except for KeyboardInterrupt and ensuring cleanup runs: + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +stop_all() calls exit(1) so we don't need to re-raise in the except KeyboardInterrupt - we just call stop_all() which exits. Good. But wait - when we catch KeyboardInterrupt in the main thread, we're in the "for thread in threads: thread.join()" - so we call stop_all() which stops all threads and joins them, then exit(1). So we're good. + +One more thing: on Windows, when you run python from a .bat file and press Ctrl+C, the batch interpreter might intercept it first. So the user might still see "Terminate batch job (Y/N)?". To fully avoid that, they could run the Python script directly (python encode_VOD_pyro.py) or use a .bat that uses something like `start /wait` - but that's a separate issue. The important fix is that when our handler runs (either via SIGINT or KeyboardInterrupt), we now actually terminate the encoder and reader processes, so the remote ffmpeg sessions will die when the SSH client is killed. +
 + +--- + + + + + +--- + + +
+Tool use: **read_lints** + + +Parameters: + +```json +{ + "paths": [ + "r:\\Videos\\mux\\ffmpeg_distributed.py" + ] +} +``` +Result: + +```json +{ + "linterErrorsByFile": [ + { + "relativeWorkspacePath": "r:\\Videos\\mux\\ffmpeg_distributed.py" + } + ] +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +All good. Let me summarize for the user. +
 + +--- + + +Summary of what was changed: + +**1. FFMPEGProc.stop()** +It now terminates the encoder process (the one running `ffmpeg` or `ssh … ffmpeg`) instead of only setting a flag. So when you cancel, the SSH processes are killed and the remote `ffmpeg` jobs get SIGHUP and exit. + +**2. TaskThread** +- The reader process is stored as `self._reader_proc` so it can be shut down from the main thread. +- `stop()` now terminates both the current reader process and the encoder (`_ffmpeg.stop()` → encoder process is terminated). + +**3. Cleanup on Ctrl+C** +- A shared `stop_all()` helper stops every worker (reader + encoder on each host) and joins the threads with a 5s timeout. +- Both the **SIGINT** handler and a **KeyboardInterrupt** handler (for when Ctrl+C is delivered as an exception, e.g. under some batch setups) call `stop_all()` and then `exit(1)`. +- Message printed: `Stopping all workers (killing ffmpeg/SSH on each host)...`. + +**4. Windows** +- Registering the SIGINT handler is wrapped in try/except so platforms that don’t support it don’t crash. + +So when you press Ctrl+C (and Python actually receives it), local reader/encoder and remote SSH/ffmpeg processes are terminated. If you still get “Terminate batch job (Y/N)?” first, that’s the Windows batch layer; after you answer Y, the Python process exits and the workers are already stopped. Running the script with `python encode_VOD_pyro.py` (or your distributed entrypoint) instead of through the batch file can make Ctrl+C go straight to Python more reliably. + +--- + +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt it still didn't terminate the ffmpeg jobs, even though it purged their respective segs. Can user just input "stop"? + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user is saying that when they tried to stop, the ffmpeg jobs on the remote workers still didn't terminate - even though the script purged their respective segments. So the cleanup we added (terminating _proc and _reader_proc) either isn't being triggered (e.g. Ctrl+C goes to the batch first, or the signal isn't reaching Python), or there's something else going on. + +They're asking: can the user just type "stop" to stop the job? That would mean running a thread that reads from stdin and when the user types "stop", we call stop_all(). That way they don't rely on Ctrl+C at all - they can type "stop" and the script will cleanly shut down all workers. + +Let me implement: +1. Start a small thread (or use a non-blocking check) that reads stdin. When the user types "stop" (or "stop\n"), call stop_all(). +2. We need to be careful: the main thread is in thread.join() which blocks. So we need a dedicated "input" thread that blocks on input and when it gets "stop", calls stop_all(). But stop_all() does exit(1) - so the whole process exits. So the input thread would do: while True: line = sys.stdin.readline(); if line.strip().lower() == 'stop': stop_all(); break or something. We need to make sure stdin is available - when running from a batch, stdin might be the console. + +Actually one issue: if we're in a Windows batch, the "active" terminal might be showing the batch output and the user might be typing in the same terminal. So reading from stdin should work - they type "stop" and press Enter. + +Let me add a thread that reads from stdin in a loop. When it gets a line that.strip().lower() == 'stop', call stop_all(). We need to make stop_all() safe to call from another thread (it just sets flags and calls terminate on processes - should be fine). And we need to make sure the stdin-reading thread is a daemon or we join it - actually if we call exit(1) from stop_all(), the whole process exits so we don't need to join the input thread. So the input thread can be a daemon thread that just reads lines and when it sees "stop", calls stop_all(). + +Implementation: +1. Before starting the worker threads, start an "input" thread that: + - reads from sys.stdin line by line + - if line.strip().lower() == 'stop': call stop_all() (which will exit) +2. We need to be careful about stdin being buffered - readline() should work. +3. On Windows, stdin might be different - let me just use sys.stdin.readline() in a loop. If stdin is closed, readline() will return '' and we can break the thread. + +Let me check the code structure again - where to add this. We have: +- threads = [TaskThread(...)] +- def stop_all(): ... +- signal(SIGINT, sigint) +- for thread in threads: thread.start() +- try: for thread in threads: thread.join() +- except KeyboardInterrupt: stop_all() + +So we need to start a thread that listens for "stop" before we start the worker threads (or at the same time). When user types "stop", stop_all() is called. The input thread should be a daemon so that when the main process exits normally (after join()), we don't block on it. Or we don't make it daemon and when main exits we just exit - the input thread will be killed. So daemon=True is fine. + +One more thing: we need to make sure stop_all() can be called from the input thread. It will call thread.stop() for each thread, and thread.join(timeout=5). That should be fine from another thread. + +Let me implement. I'll add the input listener thread right after we define stop_all(), and start it before we start the worker threads. +
 + +--- + + +Adding a background thread that reads stdin for "stop" and calls stop_all() so we don't rely on Ctrl+C. + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I need to add a thread that reads stdin. When the user types "stop" and Enter, call stop_all(). The thread should be started before we start the worker threads, and it should be a daemon so we don't block exit. We need to handle the case where stdin is not a TTY (e.g. when output is piped) - in that case readline() might block forever or get EOF. So we could only start the stdin listener if stdin is a TTY (sys.stdin.isatty()). That way when running in a real terminal the user can type "stop"; when running in a context where stdin isn't a terminal we don't start the thread. + +Let me add: +1. A function that runs in a thread: while True: line = sys.stdin.readline(); if not line: break; if line.strip().lower() == 'stop': stop_all(); break +2. Start this thread as daemon before starting worker threads, but only if sys.stdin.isatty() (so we don't block on piped input). + +Actually if stdin is not a TTY, readline() will return '' on EOF and we break - so the thread just exits. So we could always start the thread. When stdin is closed or not available, we might get an error or EOF. Let me always start it and wrap readline in try/except. If we're not a TTY, the user probably can't type anyway so the thread will just block on readline() until EOF. So the daemon thread will keep the process alive... no, daemon threads don't keep the process alive. So when the main thread joins the workers and they all finish, the main thread continues and the process exits - the daemon thread is killed. So we're good. Only start the listener if stdin is a TTY so we don't have a thread pointlessly blocking on readline() when there's no one to type. If it's a TTY, start the thread and prompt the user? We could add a one-time message: "Type 'stop' and Enter to cancel all workers." when we start the encoding phase. +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +I made a mistake - I wrote `line = stderr if False else __import__('sys').stdin.readline()` which is silly (the if False is a mistake from editing). It should just be `line = __import__('sys').stdin.readline()`. Let me fix that. Actually I used __import__('sys').stdin to avoid adding sys to the top if it's not there - but we already have `from sys import exit, stderr, platform as sys_platform` so we have stderr but not stdin. Let me check - we have `from sys import exit, stderr, platform as sys_platform`. So we need to use sys.stdin - we could add stdin to that import, or use __import__('sys').stdin. Cleaner to add stdin to the import at the top. Let me check the imports. +
 + +--- + + +Fixing the readline: use `sys.stdin` and add `stdin` to the imports. + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I'll add stdin to the sys import and fix the stdin_stop_listener to use sys.stdin.readline() and sys.stdin.isatty(). +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Good. But the user said "it still didn't terminate the ffmpeg jobs" - so our terminate() on _proc might not be working. Possible reasons: +1. On Windows, when we terminate the SSH process (the Popen that runs `ssh host ffmpeg...`), does the remote ffmpeg actually die? When you kill the SSH client, the sshd on the remote typically sends SIGHUP to the remote shell and its children, so ffmpeg should die. Unless Windows is different - we're killing a local process (ssh.exe or the Python subprocess that runs ssh). So the local process that gets terminate() is the one running "ssh -o ConnectTimeout=15 host ffmpeg ...". When that process is killed, the SSH connection drops and the remote should get the hangup. So it should work... +2. Maybe the issue is that when the user presses Ctrl+C, the batch intercepts it and the Python script's signal handler never runs? So stop_all() is never called? In that case adding "stop" as typed input will help - when they type "stop", we call stop_all() from the stdin listener thread, and that will call thread.stop() which terminates _reader_proc and _ffmpeg.stop() which terminates _proc (the SSH process). So the remote ffmpeg should then die. + +3. Another possibility: maybe the processes we're terminating are not the right ones, or terminate() on Windows doesn't kill the process tree? On Windows, Popen.terminate() sends SIGTERM on Unix but on Windows it uses TerminateProcess. So the SSH client process should die. When the SSH client dies, the server (sshd) should close the session and kill the remote shell and ffmpeg. So I think typing "stop" should work now. + +Let me also consider: when running from a .bat file, is stdin connected to the console? Usually yes - when you run a batch file from cmd, the batch file's stdin is the same as cmd's. So when the user types in the terminal, it should go to the Python process's stdin. Good. + +I'll leave the implementation as is. If the remote ffmpeg still doesn't die when they type "stop", the next step would be to use a process group or job object on Windows to kill the whole tree, or to explicitly run something over SSH to kill ffmpeg on each host - but let's see if "stop" works first. +
 + +--- + + +Done. Summary of changes: + +**1. Typing `stop`** +- If stdin is a TTY, a daemon thread runs that reads lines from stdin. +- When a line is exactly `stop` (case-insensitive, after strip), it calls `stop_all()`. +- Before starting workers you’ll see: **Type 'stop' and Enter to cancel all workers.** + +**2. Flow when you type `stop`** +- `stop_all()` runs (from the listener thread). +- For each worker thread it calls `thread.stop()`, which: + - Terminates the current **reader** process (local `ffmpeg` that feeds the pipe). + - Calls `_ffmpeg.stop()`, which terminates the **encoder** process (local `ffmpeg` or `ssh … ffmpeg`). +- When the SSH process is terminated, the remote side gets a closed connection and the remote `ffmpeg` should exit (SIGHUP / broken pipe). + +So you can type **stop** and press Enter to cancel; you no longer need to rely on Ctrl+C or the batch “Terminate batch job?” dialog. + +If remote `ffmpeg` jobs still keep running after typing `stop`, the next step is to add an explicit remote kill (e.g. `ssh host pkill -f ffmpeg` or similar) inside `stop_all()` for each host. If you see that, we can add that. + +--- + +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt:724-1059 it types on top of the output? disorienting + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user is saying that when they type "stop" in the terminal, the text they type appears interleaved with the tqdm/progress output - e.g. in the log they showed: + +``` +Pyro: 0%| |0.0/99999999.0 [00:00 STOP` or `touch STOP` in another terminal or from a file manager. No typing in the encode terminal. + - Or: run the stdin listener in a way that doesn't echo - but on Windows turning off echo for stdin is platform-specific and might not work well. + - Or: change the prompt so the user knows to type in a specific place, and use a newline before/after the "Type 'stop'" message so the input line is separate - but the real issue is that tqdm and the worker output keep overwriting the same terminal lines, so anything the user types gets mixed in. The fundamental issue is that we're using the same terminal for (1) progress output and (2) user input. So when the user types "stop", it gets echoed wherever the cursor is, which is in the middle of the progress display. + +The cleanest fix that keeps "stop" functionality: use a **stop file** instead of stdin. Tell the user "To cancel, create a file named .stop in the current directory (or touch .stop) and the job will stop within a few seconds." Then a background thread (or the main loop - but the main thread is in join()) checks periodically for the existence of that file. We need a thread that wakes up every 1-2 seconds, checks for the file, and if found, calls stop_all() and deletes the file. No stdin reading, so no typing on top of output. + +Let me implement the stop-file approach and remove the stdin listener. I'll add a thread that every 1.5 seconds checks for a file (e.g. in the tmp_dir so it's job-specific, or in cwd - cwd might be shared so .stop in cwd is fine). When the file is found, call stop_all(). +
 + +--- + + +Switching to a stop file so we don't read stdin — typing "stop" was echoing into the same terminal as the progress output. We'll poll for a file (e.g. `.stop` in the working directory) and stop when it appears. + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I'll replace the stdin listener with a stop-file poller. Use a file in tmp_dir so it's per-job, e.g. tmp_dir + '/.stop'. The message can be "To cancel: create file (e.g. touch .stop in tmp dir or echo > tmp_dir/.stop)". Actually simpler: use a well-known filename in the current directory, like ".encode_stop" or just ".stop", so the user can run `echo. > .stop` (Windows) or `touch .stop` (Unix) from another terminal or from the same one without the keystrokes mixing with output - they run the command and the polling thread will see the file. Let me use a file in tmp_dir so it's clearly tied to this encode job: tmp_dir/.stop. Then the hint is "To cancel, create file: /.stop" - but tmp_dir can be a long path. Simpler: use cwd + '.encode_stop' so they can do `type nul > .encode_stop` on Windows or `touch .encode_stop` from another terminal. I'll use a path that we have: we have tmp_dir. So stop_file = tmp_dir + '/.stop'. Then "To cancel, create (from another terminal): /.stop" - e.g. on Windows from another shell: `echo. > "\\Hydra\...\tmp\ffmpeg_segments_...\.stop"`. That's a bit long. Alternatively we could use a fixed name in cwd: '.encode_stop'. Then from another terminal in the same dir: `echo. > .encode_stop`. I'll go with cwd + '.encode_stop' so the path is short. We need to get cwd - we're inside encode(), we don't have cwd in scope. We can use os.getcwd() - need to check if os is imported. We have `from os import mkdir, unlink, listdir, environ`. So we need to add getcwd or use os.getcwd() with import os. I'll add getcwd to the os import and use stop_file = abspath('.encode_stop') or just a path in the script's directory. Actually the simplest is: stop_file = join(environ.get('TEMP', '.'), 'encode_distributed.stop') or use the tmp_dir we already have: stop_file = f'{tmp_dir}/.stop'. Then the message is "To cancel, create: {stop_file}". So the user can copy that path and in another terminal do `echo. > "path"` (Windows) or `touch "path"`. Let me use tmp_dir so it's unique per job. +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +I can remove the `stdin` import if it's no longer used. Let me check - we had `from sys import exit, stderr, stdin, platform as sys_platform`. Now we don't use stdin, so I can remove it. +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + +
+Tool use: **read_lints** + + +Parameters: + +```json +{ + "paths": [ + "r:\\Videos\\mux\\ffmpeg_distributed.py" + ] +} +``` +Result: + +```json +{ + "linterErrorsByFile": [ + { + "relativeWorkspacePath": "r:\\Videos\\mux\\ffmpeg_distributed.py" + } + ] +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +On Windows, the command to create an empty file is `echo. > .encode_stop` or `type nul > .encode_stop`. I wrote "echo. > .encode_stop" in the message which is correct for Windows. On Linux/Mac it would be `touch .encode_stop`. The message says "e.g. from another terminal: echo. > .encode_stop" - that's Windows. I could make it more generic: "create file .encode_stop (e.g. from another terminal: Windows: echo. > .encode_stop Linux/Mac: touch .encode_stop)" but that's long. Simpler: "To cancel: create file .encode_stop in the current directory (e.g. from another terminal: echo. > .encode_stop)" - the user is on Windows so echo. is fine. +
 + +--- + + +Summary of changes: + +**Stopped using stdin for “stop”** +Typing in the same terminal as the progress output was mixing your input with the progress bars. That path is removed. + +**Stopping is now done via a file** +- The script watches for a file named **`.encode_stop`** in the **current working directory** (the one you run the script from). +- About every 1.5 seconds it checks for that file. If it exists, it runs the same stop logic (kill workers, etc.), deletes the file, and exits. +- Message printed: **To cancel: create file .encode_stop (e.g. from another terminal: echo. > .encode_stop)** + +**How to cancel** +1. Open a **second** terminal/PowerShell in the same directory (e.g. `R:\Videos\mux`). +2. Run: **`echo. > .encode_stop`** +3. Within a couple of seconds the encode script will see the file, stop all workers, and exit. No typing in the encode terminal, so no overlap with the progress output. + +Ctrl+C and KeyboardInterrupt still work as before; the file is an extra way to stop that doesn’t use stdin. + +--- + +_**User**_ + +remove `[L]ocal (NVENC)`, it shouldn't prompt the user anymore; distributed only now. + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user wants to remove the prompt that asks for [L]ocal (NVENC) or [D]istributed (farm) - they want distributed only, no prompt. I need to find where this prompt is in encode_VOD_pyro.py and remove it so the script just runs in distributed mode. +
 + +--- + + + + + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "Local.*NVENC|Distributed|encode mode|prompt", + "path": "r:\\Videos\\mux\\encode_VOD_pyro.py", + "contextBefore": 0, + "contextAfter": 0, + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "Local.*NVENC|Distributed|encode mode|prompt", + "path": "r:\\Videos\\mux\\encode_VOD_pyro.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "encode_VOD_pyro.py", + "matches": [ + { + "lineNumber": 13, + "content": "# Distributed mode requires tqdm and ffmpeg_distributed.py (SSH, Unix select.poll); on Windows use WSL or Linux." + }, + { + "lineNumber": 369, + "content": " safe_log_info(f\"Distributed encode: {input_path} -> {output_path} (hosts: {hosts})\")" + }, + { + "lineNumber": 370, + "content": " print(f\"{Colors.BLUE}Distributed encode (AV1): {input_path.name}{Colors.ENDC}\")" + }, + { + "lineNumber": 387, + "content": " safe_log_error(\"Distributed encode did not produce output\", f\"{Colors.RED}Distributed encode did not produce output{Colors.ENDC}\")" + }, + { + "lineNumber": 389, + "content": " safe_log_error(f\"Distributed encode failed: {e}\", f\"{Colors.RED}Distributed encode failed: {e}{Colors.ENDC}\")" + }, + { + "lineNumber": 406, + "content": " print(f\"{Colors.YELLOW}Distributed mode uses select.poll() and may fail on Windows; use WSL or Linux for best results.{Colors.ENDC}\")" + }, + { + "lineNumber": 419, + "content": " safe_log_info(f\"Distributed mode; hosts: {hosts}\")" + } + ] + } + ], + "totalLines": 7, + "totalMatchedLines": 7 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +I need to find the actual prompt - "Encode mode: [L]ocal (NVENC) / [D]istributed (farm)" and the input() that reads the choice. Let me search for that. +
 + +--- + + + + + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "input\\(|L\\]|D\\]|Local|NVENC", + "path": "r:\\Videos\\mux\\encode_VOD_pyro.py", + "contextBefore": 1, + "contextAfter": 3, + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "input\\(|L\\]|D\\]|Local|NVENC", + "path": "r:\\Videos\\mux\\encode_VOD_pyro.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "encode_VOD_pyro.py", + "matches": [ + { + "lineNumber": 32, + "content": " print(\"2 - Third GPU\")", + "isContextLine": true + }, + { + "lineNumber": 33, + "content": " gpu = input(f\"{Colors.YELLOW}Enter GPU number (0-2):{Colors.ENDC} \").strip()" + }, + { + "lineNumber": 34, + "content": " if gpu in ['0', '1', '2']:", + "isContextLine": true + }, + { + "lineNumber": 35, + "content": " return gpu", + "isContextLine": true + }, + { + "lineNumber": 36, + "content": " print(f\"{Colors.RED}Invalid selection. Please try again.{Colors.ENDC}\")", + "isContextLine": true + }, + { + "lineNumber": 401, + "content": " if not use_distributed:", + "isContextLine": true + }, + { + "lineNumber": 402, + "content": " choice = input(f\"\\n{Colors.BLUE}Encode mode: [L]ocal (NVENC) / [D]istributed (farm):{Colors.ENDC} \").strip().upper() or \"L\"" + }, + { + "lineNumber": 403, + "content": " use_distributed = choice == \"D\"", + "isContextLine": true + }, + { + "lineNumber": 404, + "isContextLine": true + }, + { + "lineNumber": 405, + "content": " if use_distributed and sys.platform == \"win32\":", + "isContextLine": true + } + ] + } + ], + "totalLines": 10, + "totalMatchedLines": 2 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +I need to read more context around lines 398-425 to see the full flow - use_distributed variable and how to make it always True and remove the prompt. +
 + +--- + + + + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\encode_VOD_pyro.py + +
+ + +--- + +
Thought Process + +So the flow is: +1. use_distributed = from --distributed or -d flag, else False +2. If not use_distributed, prompt user for L/D +3. If use_distributed: get hosts, etc. Else: get_gpu_selection(), then encode_dvr (local) + +To make "distributed only": +- Remove the prompt and the local path entirely for this script. So: always use_distributed = True. Remove the "if not use_distributed: input(...)" block. Remove the else branch that does get_gpu_selection and encode_dvr - i.e. always do the distributed branch. We can remove the --distributed / -d flag handling too since we're always distributed, or leave it as no-op. I'll set use_distributed = True and remove the prompt and the else branches (local GPU selection and encode_dvr call). +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\encode_VOD_pyro.py + +
+ + + +--- + +
Thought Process + +I removed the prompt and made it always use distributed. The get_gpu_selection() and encode_dvr() are now dead code from the main path - they may still be used elsewhere or defined in the file. Let me check if get_gpu_selection is used anywhere else; if not we could leave it (no harm) or remove it. The user only asked to remove the prompt and make it distributed only, so I'm done. I'll check lints. +
 + +--- + + + + + +--- + + +
+Tool use: **read_lints** + + +Parameters: + +```json +{ + "paths": [ + "r:\\Videos\\mux\\encode_VOD_pyro.py" + ] +} +``` +Result: + +```json +{ + "linterErrorsByFile": [ + { + "relativeWorkspacePath": "r:\\Videos\\mux\\encode_VOD_pyro.py" + } + ] +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +Good. The script now always runs in distributed mode with no prompt. get_gpu_selection and encode_dvr remain in the file in case they're used elsewhere or the user wants to re-add local mode later; I didn't remove them. +
 + +--- + + +Changes made: + +- **No more prompt** – The “Encode mode: [L]ocal (NVENC) / [D]istributed (farm)” question is gone. +- **Distributed only** – The script always uses the distributed farm; `--distributed` / `-d` and the local NVENC path are no longer used in the main flow. +- **Flow** – It goes straight to the Windows warning (if applicable), then sets up hosts and processes all files with `encode_dvr_distributed`. + +`get_gpu_selection()` and `encode_dvr()` are still in the file but are no longer used by the main block. I can remove those as well if you want to drop local encoding entirely. + +--- + +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user is referencing the terminal file. They might want me to look at it to see what's there - perhaps there's an error, or they're asking me to do something based on the terminal output. Let me read the terminal file to see the current state. +
 + +--- + + + + + +--- + + +
Tool use: **read_file_v2** • Read file: c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt + +
+ + +--- + +
Thought Process + +I see two things in the terminal: + +1. There's still an old run showing "Encode mode: [L]ocal (NVENC) / [D]istributed (farm): d" - that's from before our change. The newer runs (789+, 790+) show "Distributed mode uses..." directly with no prompt, so that's correct. + +2. **Error**: "Distributed encode failed: join() takes 1 positional argument but 2 were given" + +So somewhere we're calling `join()` with 2 arguments but the method only takes 1. In Python, `str.join(iterable)` takes one argument - the iterable. But we also have `join` from shlex - `from shlex import split, join` in ffmpeg_distributed.py. So in ffmpeg_distributed.py, `join` is the shlex.join which joins a list of strings into a shell-quoted string: join([x]) - so join takes one argument (a list). + +Wait, the error says "join() takes 1 positional argument but 2 were given". So something is calling join with 2 args. That could be: +- thread.join(timeout=5) - but that's Thread.join(), which does take a timeout. So that's 2 arguments (self + timeout). Oh! In Python 2, Thread.join() might only take self. But in Python 3, Thread.join(timeout=None) takes an optional timeout. So thread.join(5) or thread.join(timeout=5) should work... + +Unless - maybe they're using a different "join" - like the threading.Thread.join. Let me check: in Python 3, threading.Thread.join(timeout=None) - so join(self, timeout=None). So thread.join(5) gives join(self, 5) which is 2 arguments. That should work. + +Oh! Could it be that somewhere we're using the shlex.join but passing two arguments? Like join(cmd, something)? Let me search for .join( in ffmpeg_distributed.py - we have thread.join(timeout=5). So the first argument is self (the thread), the second is timeout=5. So that's 2 arguments for Thread.join(). In Python 3.10+, Thread.join signature is join(self, timeout=None). So 2 args is correct. + +Unless - maybe the issue is that in the encode_VOD_pyro.py or somewhere, we're calling the wrong join? Like we did from shlex import join and then somewhere we do join(a, b)? Let me grep for join in both files. + +Actually re-reading the error: "join() takes 1 positional argument but 2 were given". So the join that's being called expects 1 positional (plus self), so 2 total including self. So it's a method that takes only (self). So when we call thread.join(timeout=5), we're passing timeout=5 as keyword. So that's thread.join(timeout=5) which is 1 positional (self) + 1 keyword. So that should be fine. + +Unless - the join being called is str.join? Like " ".join(list) - that takes 2: the separator (self) and the iterable. So 2 arguments. So that's 2. "join() takes 1 positional argument but 2 were given" - so the callee takes 1 positional (plus self). So the callee's signature is join(self). So it's something like Thread.join() in an environment where join doesn't accept timeout? That could be a very old Python or a custom Thread class? + +Let me search for join in ffmpeg_distributed - maybe we're passing join to something that then gets called with 2 args. +
 + +--- + + +Checking where `join()` is called — error: "join() takes 1 positional argument but 2 were given". + + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "\\.join\\(", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "\\.join\\(", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "ffmpeg_distributed.py", + "matches": [ + { + "lineNumber": 240, + "content": " reader.join(timeout=2)" + }, + { + "lineNumber": 241, + "content": " self.stderr = ''.join(stderr_lines)" + }, + { + "lineNumber": 415, + "content": " thread.join(timeout=5)" + }, + { + "lineNumber": 451, + "content": " thread.join()" + }, + { + "lineNumber": 457, + "content": " f.write('\\n'.join([f\"file '{fpath}'\" for fpath in sorted(glob(f'{tmp_dir}/*.ts'))]))" + }, + { + "lineNumber": 470, + "content": " tqdm.write('Concat ffmpeg: ' + ' '.join(join([x]) for x in concat_cmd), file=stderr)" + } + ] + } + ], + "totalLines": 6, + "totalMatchedLines": 6 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "join\\(", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "join\\(", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "ffmpeg_distributed.py", + "matches": [ + { + "lineNumber": 43, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 66, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 77, + "content": " cmd = ['ssh', probe_host, join(cmd)]" + }, + { + "lineNumber": 240, + "content": " reader.join(timeout=2)" + }, + { + "lineNumber": 241, + "content": " self.stderr = ''.join(stderr_lines)" + }, + { + "lineNumber": 316, + "content": " encoder_cmd = ['ssh', '-o', 'ConnectTimeout=15', self._host, join(encoder_cmd)]" + }, + { + "lineNumber": 415, + "content": " thread.join(timeout=5)" + }, + { + "lineNumber": 418, + "content": " stop_file = abspath(join(getcwd(), '.encode_stop'))" + }, + { + "lineNumber": 451, + "content": " thread.join()" + }, + { + "lineNumber": 457, + "content": " f.write('\\n'.join([f\"file '{fpath}'\" for fpath in sorted(glob(f'{tmp_dir}/*.ts'))]))" + }, + { + "lineNumber": 470, + "content": " tqdm.write('Concat ffmpeg: ' + ' '.join(join([x]) for x in concat_cmd), file=stderr)" + } + ] + } + ], + "totalLines": 11, + "totalMatchedLines": 11 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +Line 418: `stop_file = abspath(join(getcwd(), '.encode_stop'))` + +Here `join` is from shlex - we have `from shlex import split, join`. In Python's shlex module, `join(split_command)` takes a list and returns a string. So shlex.join([a, b]) would be the correct usage - one argument, a list. But we're calling join(getcwd(), '.encode_stop') - that's TWO arguments! So we're using the wrong join. We need os.path.join for that, not shlex.join. So the fix is to use a different function for the path - we have `from os.path import basename, abspath, expanduser, isfile, isdir, getsize`. We need to add join from os.path, but that would shadow shlex.join. So we need to use the full path join - either import os.path and use os.path.join(getcwd(), '.encode_stop') or add join to the os.path import. But then we'd have two joins - one from shlex and one from os.path. So the fix is: use os.path.join for the file path. So we need to add os.path.join. We could do: +from os.path import basename, abspath, expanduser, isfile, isdir, getsize, join as path_join +Then use path_join(getcwd(), '.encode_stop'). Or we could just do abspath('.encode_stop') since getcwd() is the current directory, so join(getcwd(), '.encode_stop') is the same as .encode_stop in cwd, and abspath('.encode_stop') would give us the absolute path of .encode_stop in the current working directory. So we can simplify to just stop_file = abspath('.encode_stop') - that should work since when the script runs, getcwd() is the working directory and abspath('.encode_stop') resolves to that dir + .encode_stop. Yes! +
 + +--- + + +Identifying the bug: line 418 uses `join(getcwd(), '.encode_stop')`; `join` is `shlex.join` (takes one list), not `os.path.join`. Replacing with `os.path.join` (or `abspath('.encode_stop')`). + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +abspath('.encode_stop') will resolve relative to the current working directory, which is the same as join(getcwd(), '.encode_stop'). So we're good. I can also remove getcwd from the os import if it's no longer used. Let me check. +
 + +--- + + + + + +--- + + +
+Tool use: **ripgrep_raw_search** + + +Parameters: + +```json +{ + "pattern": "getcwd", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "caseInsensitive": false +} +``` +Result: + +```json +{ + "success": { + "pattern": "getcwd", + "path": "r:\\Videos\\mux\\ffmpeg_distributed.py", + "outputMode": "content", + "workspaceResults": { + "r:\\Videos\\mux": { + "content": { + "matches": [ + { + "file": "ffmpeg_distributed.py", + "matches": [ + { + "lineNumber": 7, + "content": "from os import mkdir, unlink, listdir, environ, getcwd" + } + ] + } + ], + "totalLines": 1, + "totalMatchedLines": 1 + } + } + } + } +} +``` +Status: **completed** + + +
+ + +--- + +
Thought Process + +getcwd is now unused, I can remove it from the import. +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Fixed. The error was that we used shlex.join (which takes a single list and returns a shell-quoted string) as if it were os.path.join (which takes path parts). Replaced with abspath('.encode_stop') which is equivalent for the current directory. +
 + +--- + + +The crash came from using **shlex.join** (takes one list, for shell quoting) where a path was needed. The code was doing `join(getcwd(), '.encode_stop')`, which is the wrong `join`. + +It’s now **`abspath('.encode_stop')`**, which correctly points at `.encode_stop` in the current working directory. The unused `getcwd` import was removed. + +Run the encode again; that error should be gone. + +--- + +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt let's go back to stdin, it at least worked + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user wants to revert from the stop-file approach back to reading "stop" from stdin. I need to: +1. Restore the stdin_stop_listener that reads lines and calls stop_all() when user types "stop" +2. Remove the stop_file_poller and the .encode_stop file logic +3. Restore the stdin import +4. Only start the stdin listener when stdin.isatty() so we don't block when stdin isn't a terminal + +The downside they mentioned earlier was that typing "stop" appeared on top of the output (disorienting). They're saying stdin at least worked - meaning the stop functionality actually triggered, whereas maybe the file approach had issues or they prefer the tradeoff. I'll restore the stdin approach. +
 + +--- + + + + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I need to: +1. Add stdin back to the sys import +2. Replace the stop_file / stop_file_poller with stdin_stop_listener +3. Only start the listener when stdin.isatty() +4. Restore the message "Type 'stop' and Enter to cancel all workers." +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Done. Reverted to stdin-based "stop" - when stdin is a TTY we start the listener and show the message. Typing "stop" + Enter will call stop_all(). +
 + +--- + + +Reverted to the stdin-based stop: + +- **Type 'stop' and Enter** in the same terminal to cancel (when stdin is a TTY). +- The listener thread only runs when `stdin.isatty()` is true, so you don’t block on read when there’s no terminal. +- Ctrl+C and KeyboardInterrupt still trigger the same cleanup. + +--- + +_**User**_ + +@c:\Users\Nathan\.cursor\projects\r-Videos-mux\terminals\6.txt:841-1059 I can't type stop while encode is running? + +--- + +_**Agent (model default, mode Agent)**_ + +
Thought Process + +The user is saying they can't type "stop" while the encode is running. Looking at the terminal output, when they type "stop" it gets interleaved with the progress output (e.g. "stop" appears in the middle of "RenderScrap" making "stopderScrap"). So the issue might be: + +1. The terminal is in a mode where stdin isn't being read - e.g. on Windows when running from a .bat, the console might be in a state where keypresses go to the batch/display rather than to Python's stdin. +2. Or the readline() is blocking but the way the progress bars (tqdm) update the display, they might be overwriting the same line or affecting the terminal in a way that makes it hard to type, or the input might not be getting through. + +Actually re-reading the user message: "I can't type stop while encode is running?" - they might mean literally that they cannot type, or that when they type it doesn't work. From the log we see "stop" did get through (it appears as "stopderScrap" - so "stop" was read and then "Stopping all workers" appeared). So actually it did work in that run - they typed stop and it triggered. But maybe in another scenario they can't type at all? + +One common issue on Windows: when you run a Python script from a batch file, the batch file's console might not be forwarding stdin to the Python process in a way that allows interactive input while the script is also writing to stdout/stderr. Or the terminal might be in "raw" mode for the progress bars. + +Another possibility: tqdm and the multi-threaded output might be taking over the terminal (e.g. repositioning cursor, overwriting lines). So when the user tries to type, the cursor keeps moving and their keystrokes end up in the wrong place or get overwritten. So they "can't type" in the sense that the display is so chaotic that typing is impossible or the text goes to the wrong place. + +To allow typing "stop" without the progress output interfering, we could: +1. Use a dedicated input line - e.g. reserve the last line of the terminal for input. That's complex and platform-dependent. +2. Use the stop file approach again - then they don't need to type; they run a command in another terminal. We already had that and they said "let's go back to stdin, it at least worked". So they preferred stdin because the file approach had the join() bug at the time. Now the file approach would work (we fixed the bug). So we could offer both: keep stdin for those who can type, and also check for .encode_stop file so they can "echo. > .encode_stop" from another terminal when they can't type in the encode window. +3. Or: run the stdin reader in a way that works better on Windows. On Windows, the issue might be that the main thread is blocked on thread.join() and the stdin reader thread does get to run, but the console is shared - so when tqdm updates the progress bars it might be moving the cursor and the user's typing gets mixed. One fix: don't use tqdm's dynamic progress bars when we're also reading stdin - use a simpler progress that doesn't overwrite lines. That's a big change. A simpler fix: support BOTH stdin and the stop file. So if they can't type (or don't want to), they can create .encode_stop from another terminal. That way we have two ways to stop and the user can use whichever works. + +I'll add back the stop-file poller in addition to the stdin listener. So we have: +1. If stdin.isatty(): start the stdin listener (type "stop") +2. Also start the stop-file poller (create .encode_stop to stop) + +Then the user can either type "stop" if their terminal allows it, or open another terminal and do `echo. > .encode_stop` in the same directory. I need to fix the stop file path - last time we used abspath('.encode_stop') which is correct. Let me add the file poller back alongside stdin. +
 + +--- + + +Adding the stop-file option back alongside stdin so we can stop by creating `.encode_stop` from another terminal when progress output prevents typing. + + +--- + + +
Tool use: **read_file_v2** • Read file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + +--- + +
Thought Process + +I'll add the stop-file poller back. Use abspath('.encode_stop') for the path. Start both the stdin listener (when isatty) and the file poller. Update the message to mention both options. +
 + +--- + + + + + +--- + + + +
Tool use: **edit_file_v2** • Edit file: r:\Videos\mux\ffmpeg_distributed.py + +
+ + + +--- + +
Thought Process + +Good. Now the user has two ways to stop: +1. Type "stop" + Enter in the same terminal (if stdin is a TTY and they can get a line in between progress updates). +2. From another terminal (or same dir): create the file .encode_stop (e.g. `echo. > .encode_stop` on Windows). The poller checks every 1.5s. + +So when the progress output makes it impossible to type, they can open a second PowerShell/cmd in R:\Videos\mux and run `echo. > .encode_stop` and the job will stop within a couple seconds. +
 + +--- + + +You now have **two ways** to stop: + +1. **Type `stop` + Enter** in the encode window (same as before; works when the terminal isn’t being overwritten). +2. **Use a stop file** – from **another** terminal in the same directory (e.g. `R:\Videos\mux`), run: + ```bat + echo. > .encode_stop + ``` + The script checks for this file about every 1.5 seconds and will stop all workers and exit. + +So when the progress output makes it hard or impossible to type in the encode window, open a second terminal, `cd` to the same folder, run the command above, and the encode will stop shortly. + +--- + diff --git a/encode_VOD_pyro.py b/encode_VOD_pyro.py index e387ff1..c56cc39 100644 --- a/encode_VOD_pyro.py +++ b/encode_VOD_pyro.py @@ -10,10 +10,9 @@ from datetime import datetime import shutil import time -# Distributed encode defaults (AV1 libaom: crf 0, maxrate 9000k; -cpu-used 8 = faster, -threads 0 = use all cores; override via DISTRIBUTED_REMOTE_ARGS). # Distributed mode requires tqdm and ffmpeg_distributed.py (SSH, Unix select.poll); on Windows use WSL or Linux. DISTRIBUTED_HOSTS_DEFAULT = ["Pyro", "RenderScrap", "root@GuiltsCurse", "PostIrony", "root@Godzilla"] -DISTRIBUTED_REMOTE_ARGS_DEFAULT = "-c:v libaom-av1 -crf 0 -b:v 9000k -maxrate 9000k -bufsize 18000k -cpu-used 8 -threads 0 -an" +DISTRIBUTED_REMOTE_ARGS_DEFAULT = "-c:v libaom-av1 -crf 0 -b:v 9000k -maxrate 9000k -bufsize 18000k -cpu-used 8 -row-mt 1 -an" DISTRIBUTED_SEGMENT_SECONDS = 60 # ANSI color codes @@ -393,36 +392,21 @@ def encode_dvr_distributed(input_file, output_dir, hosts, segment_seconds=60, re if __name__ == "__main__": - use_distributed = "--distributed" in sys.argv or "-d" in sys.argv - if "--distributed" in sys.argv: - sys.argv.remove("--distributed") - if "-d" in sys.argv: - sys.argv.remove("-d") - - if not use_distributed: - choice = input(f"\n{Colors.BLUE}Encode mode: [L]ocal (NVENC) / [D]istributed (farm):{Colors.ENDC} ").strip().upper() or "L" - use_distributed = choice == "D" - - if use_distributed and sys.platform == "win32": + if sys.platform == "win32": print(f"{Colors.YELLOW}Distributed mode uses select.poll() and may fail on Windows; use WSL or Linux for best results.{Colors.ENDC}") input_dir = "input" output_dir = "output" os.makedirs(output_dir, exist_ok=True) - if use_distributed: - hosts_str = os.environ.get("DISTRIBUTED_HOSTS") - if hosts_str: - hosts = [h.strip() for h in hosts_str.split(",") if h.strip()] - else: - hosts = DISTRIBUTED_HOSTS_DEFAULT - print(f"{Colors.BLUE}Using hosts: {', '.join(hosts)}{Colors.ENDC}") - safe_log_info(f"Distributed mode; hosts: {hosts}") + hosts_str = os.environ.get("DISTRIBUTED_HOSTS") + if hosts_str: + hosts = [h.strip() for h in hosts_str.split(",") if h.strip()] else: - gpu = get_gpu_selection() - safe_log_info(f"Selected GPU: {gpu}") + hosts = DISTRIBUTED_HOSTS_DEFAULT + print(f"{Colors.BLUE}Using hosts: {', '.join(hosts)}{Colors.ENDC}") + safe_log_info(f"Distributed mode; hosts: {hosts}") - # Get list of files to process files = [f for f in os.listdir(input_dir) if f.endswith(('.mp4', '.DVR.mp4'))] total_files = len(files) @@ -435,7 +419,4 @@ if __name__ == "__main__": input_file = os.path.join(input_dir, file) safe_log_info(f"Processing file {i}/{total_files}: {file}") print(f"\n{Colors.BLUE}Processing file {i}/{total_files}: {file}{Colors.ENDC}") - if use_distributed: - encode_dvr_distributed(input_file, output_dir, hosts, segment_seconds=DISTRIBUTED_SEGMENT_SECONDS) - else: - encode_dvr(input_file, output_dir, gpu) \ No newline at end of file + encode_dvr_distributed(input_file, output_dir, hosts, segment_seconds=DISTRIBUTED_SEGMENT_SECONDS) \ No newline at end of file diff --git a/ffmpeg_distributed.py b/ffmpeg_distributed.py index fba1060..765b504 100644 --- a/ffmpeg_distributed.py +++ b/ffmpeg_distributed.py @@ -10,7 +10,7 @@ from threading import Thread from time import sleep, time from typing import List, NamedTuple, Callable, Union, Tuple from signal import signal, SIGINT -from sys import exit, stderr, platform as sys_platform +from sys import exit, stderr, stdin, platform as sys_platform from shlex import split, join from hashlib import md5 from time import strptime @@ -161,6 +161,11 @@ class FFMPEGProc: def stop(self): self._should_stop = True + if getattr(self, '_proc', None) is not None and self._proc.poll() is None: + try: + self._proc.terminate() + except OSError: + pass def _read_stderr_loop(self, stderr_lines: list): """Read stderr in a loop (used on Windows where select.poll is unavailable).""" @@ -270,6 +275,11 @@ class TaskThread(Thread): def stop(self): self._should_stop = True + if getattr(self, '_reader_proc', None) is not None and self._reader_proc.poll() is None: + try: + self._reader_proc.terminate() + except OSError: + pass if self._ffmpeg: self._ffmpeg.stop() @@ -305,21 +315,24 @@ class TaskThread(Thread): if self._host != 'localhost': encoder_cmd = ['ssh', '-o', 'ConnectTimeout=15', self._host, join(encoder_cmd)] - reader_proc = Popen(reader_cmd, stdout=PIPE, stderr=DEVNULL) + self._reader_proc = Popen(reader_cmd, stdout=PIPE, stderr=DEVNULL) ret = -1 try: with open(task.output_file, 'wb') as outfile: self._ffmpeg = FFMPEGProc( - encoder_cmd, stdin=reader_proc.stdout, stdout=outfile, + encoder_cmd, stdin=self._reader_proc.stdout, stdout=outfile, update_callback=upd, binary_io=True ) ret = self._ffmpeg.run() finally: - try: - reader_proc.wait(timeout=2) - except TimeoutExpired: - reader_proc.terminate() - reader_proc.wait(timeout=5) + rp = getattr(self, '_reader_proc', None) + if rp is not None: + try: + rp.wait(timeout=2) + except TimeoutExpired: + rp.terminate() + rp.wait(timeout=5) + self._reader_proc = None if ret != 0: try: @@ -393,20 +406,67 @@ def encode(hosts: List[str], input_file: str, output_file: str, segment_seconds: stderr.flush() threads = [TaskThread(host, input_file, task_queue, pos, remote_ffmpeg_path) for pos, host in enumerate(hosts, 0)] - def sigint(sig, stack): - print('Got SIGINT, stopping...') + def stop_all(): + tqdm.write('Stopping all workers (killing ffmpeg/SSH on each host)...', file=stderr) + stderr.flush() for thread in threads: thread.stop() for thread in threads: - thread.join() + thread.join(timeout=5) exit(1) - signal(SIGINT, sigint) + stop_file = abspath('.encode_stop') + + def stdin_stop_listener(): + try: + while True: + line = stdin.readline() + if not line: + break + if line.strip().lower() == 'stop': + stop_all() + break + except (OSError, EOFError): + pass + + def stop_file_poller(): + try: + while True: + sleep(1.5) + if isfile(stop_file): + try: + unlink(stop_file) + except OSError: + pass + stop_all() + break + except OSError: + pass + + def sigint(sig, stack): + stop_all() + + try: + signal(SIGINT, sigint) + except (ValueError, OSError): + pass # SIGINT not available on this platform + + if getattr(stdin, 'isatty', lambda: False)(): + tqdm.write("To cancel: type 'stop' + Enter, or create .encode_stop (e.g. from another terminal: echo. > .encode_stop)", file=stderr) + else: + tqdm.write("To cancel: create .encode_stop in current dir (e.g. from another terminal: echo. > .encode_stop)", file=stderr) + stderr.flush() + if getattr(stdin, 'isatty', lambda: False)(): + Thread(target=stdin_stop_listener, daemon=True).start() + Thread(target=stop_file_poller, daemon=True).start() for thread in threads: thread.start() - for thread in threads: - thread.join() + try: + for thread in threads: + thread.join() + except KeyboardInterrupt: + stop_all() list_path = f'{tmp_dir}/output_segments.txt' with open(list_path, 'w') as f: