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# Zipseq Thumbs.db exclusion (2025-12-29 17:30Z)

_**User (2025-12-29 17:37Z)**_

zipseq needs to completely ignore Thumbs.db. It should be removed from any existing manifests. If the manifest is changed, but only Thumbs.db is changed (removed) it should not be rezipped.

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_**Agent (model default, mode Agent)**_



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Examining `zip_sequences.py` to understand how it handles manifests and files.


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



---


Updating `zip_sequences.py` to ignore `Thumbs.db` files. Modifying file iteration, state loading, and state comparison.


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



---


Updating the code to ignore `Thumbs.db` files:


---

<tool-use data-tool-type="write" data-tool-name="search_replace">

<details><summary>Tool use: **search_replace** • Edit file: zip_sequences.py</summary>

**Chunk 1**
Lines added: 3, lines removed: undefined

```diff
@@ -522,4 +522,7 @@
              continue
          for filename in filenames:
+             # Ignore Thumbs.db files completely
+             if filename.lower() == "thumbs.db":
+                 continue
              yield path / filename
  
```

</details>

</tool-use>

---

<tool-use data-tool-type="write" data-tool-name="search_replace">

<details><summary>Tool use: **search_replace** • Edit file: zip_sequences.py</summary>

**Chunk 1**
Lines added: 6, lines removed: undefined

```diff
@@ -567,4 +567,10 @@
      try:
          state = json.loads(state_path.read_text())
+         # Remove Thumbs.db entries from loaded state
+         if "files" in state:
+             state["files"] = [
+                 entry for entry in state.get("files", [])
+                 if Path(entry.get("path", "")).name.lower() != "thumbs.db"
+             ]
          # Normalize timestamps in loaded state to ensure consistency
          # This handles state files created before normalization was added
```

</details>

</tool-use>

---

<tool-use data-tool-type="write" data-tool-name="search_replace">

<details><summary>Tool use: **search_replace** • Edit file: zip_sequences.py</summary>

**Chunk 1**
Lines added: 4, lines removed: 1

```diff
@@ -597,7 +597,10 @@
      
      def normalize_state(state: dict) -&gt; dict:
-         """Normalize timestamps in state to filesystem precision."""
+         """Normalize timestamps in state to filesystem precision and filter out Thumbs.db."""
          normalized = {"files": []}
          for entry in state.get("files", []):
+             # Ignore Thumbs.db files in state comparison
+             if Path(entry.get("path", "")).name.lower() == "thumbs.db":
+                 continue
              mtime_ns = entry["mtime_ns"]
              if is_windows:
```

**Chunk 2**
Lines added: 1, lines removed: 1

```diff
@@ -610,5 +613,5 @@
          return normalized
      
-     # Compare normalized states
+     # Compare normalized states (Thumbs.db already filtered out)
      normalized_seq = normalize_state(seq_state)
      normalized_stored = normalize_state(stored_state)
```

</details>

</tool-use>

---



---


Checking for lint errors and verifying that `zip_sequence` uses the filtered file list:


---

<tool-use data-tool-type="generic" data-tool-name="read_lints">
<details>
          <summary>Tool use: **read_lints** • Read lints for 1 file</summary>
      
Lint paths:

- `zip_sequences.py`

Lint results


**No lint errors found**
</details>
</tool-use>

---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



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Verifying that `zip_sequence` uses the filtered iterator:


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



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## Summary of Changes

1. **`iter_sequence_files()`** — Skips `Thumbs.db` files during iteration, so they're never included in new states or archives.

2. **`load_state()`** — Removes any `Thumbs.db` entries from existing manifests when loading state files.

3. **`state_changed()`** — Filters out `Thumbs.db` entries from both states before comparison, so if the only change is removing `Thumbs.db`, it won't trigger a rezip.

Results:
- `Thumbs.db` files are ignored during scanning
- Existing manifests have `Thumbs.db` entries removed when loaded
- If a manifest change is only due to `Thumbs.db` removal, it won't trigger recompression

The `zip_sequence()` function automatically benefits from these changes since it uses `iter_sequence_files()`, which now filters out `Thumbs.db`.

No linting errors were found. The changes are ready to use.

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_**User (2025-12-29 17:37Z)**_

does zipseq currently scan other types in the seq than png? e.g. jpg, exr

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_**Agent (model default, mode Agent)**_



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Checking which file types `zipseq` scans:


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



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Yes. `zipseq` scans multiple file types, not just PNG.

```45:52:zip_sequences.py
SEQUENCE_EXTENSIONS = {
    ".png",
    ".jpg",
    ".jpeg",
    ".tif",
    ".tiff",
    ".exr",
}
```

The `find_sequence_dirs()` function uses this set to identify sequence directories:

```491:491:zip_sequences.py
        has_frames = any(Path(dirpath, f).suffix.lower() in SEQUENCE_EXTENSIONS for f in filenames)
```

Supported extensions:
- `.png`
- `.jpg`
- `.jpeg`
- `.tif`
- `.tiff`
- `.exr`

All of these are included in archives and tracked in manifests.

---

_**User (2025-12-29 17:37Z)**_

if there's a sequence with both jpg and png (by mistake) will it scan and compress both?

---

_**Agent (model default, mode Agent)**_



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Yes. If a sequence directory contains both JPG and PNG files, both will be scanned and compressed.

How it works:
1. `find_sequence_dirs()` checks if a directory has any files matching `SEQUENCE_EXTENSIONS` (`.png`, `.jpg`, `.jpeg`, `.tif`, `.tiff`, `.exr`). If it finds any, it treats the directory as a sequence directory.
2. Once identified as a sequence directory, `iter_sequence_files()` includes all files in that directory (except `Thumbs.db` and archive paths), regardless of extension:

```517:524:zip_sequences.py
def iter_sequence_files(seq_dir: Path) -> Iterator[Path]:
    for dirpath, dirnames, filenames in os.walk(seq_dir):
        path = Path(dirpath)
        dirnames[:] = [d for d in dirnames if d not in ("_archive", "_CURRENT")]
        if is_archive_path(path):
            continue
        for filename in filenames:
            # Ignore Thumbs.db files completely
            if filename.lower() == "thumbs.db":
                continue
            yield path / filename
```

So if a directory has both `frame_001.jpg` and `frame_001.png`, both will be:
- Included in the state manifest
- Compressed into the archive

The extension check only determines whether a directory is a sequence directory; it doesn't filter which files get included once it's identified as one.

---

_**User (2025-12-29 17:37Z)**_

I had one with jpgs that I removed so only the pngs remain, but the manifest isn't changing.

---

_**Agent (model default, mode Agent)**_



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Checking the state comparison logic to see why the manifest isn't updating after removing JPGs:


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

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<tool-use data-tool-type="search" data-tool-name="codebase_search">
<details>
                <summary>Tool use: **codebase_search** • Searched codebase "How does the quick skip check work when directory mtime is older than archive?" • **14** results</summary>
            
| File | Lines |
|------|-------|
| `zip_sequences.py` | L981-1156 |
| `zip_sequences.py` | L979-1156 |
| `scripts_old/0MoveToCurrent.bat` | L61 |
| `zip_sequences.py` | L563-650 |
| `zip_sequences.py` | L471-513 |
| `zip_sequences.py` | L516-560 |
| `zip_sequences.py` | L1159-1286 |
| `zip_sequences.py` | L676-969 |
| `zip_sequences.py` | L861-969 |
| `zip_sequences.py` | L984-1286 |
| `UpdateSequences.ps1` | L54-96 |
| `zip_sequences.py` | L584-657 |
| `zip_sequences.py` | L861-976 |
| `zip_sequences.py` | L557-650 |

</details>
</tool-use>

---



---


The quick-skip optimization is likely the cause. It skips state computation if the directory mtime is <= the archive mtime, which can miss deletions when the directory mtime doesn't update. Checking the logic and making it more reliable:


---

<tool-use data-tool-type="read" data-tool-name="read_file">
<details><summary>Tool use: **read_file** • Read file: zip_sequences.py</summary>

</details>
</tool-use>

---



---


The quick-skip optimization can miss file deletions when the directory mtime doesn't update. Adding a pre-check: if any files from the stored state are missing, we'll recompute the state instead of skipping.


---

<tool-use data-tool-type="write" data-tool-name="search_replace">

<details><summary>Tool use: **search_replace** • Edit file: zip_sequences.py</summary>

**Chunk 1**
Lines added: 29, lines removed: 15

```diff
@@ -1030,19 +1030,33 @@
              if zip_path.exists() and stored_state is not None:
                  # Quick check: if directory mtime is older than archive, likely unchanged
-                 try:
-                     dir_mtime = seq_dir.stat().st_mtime_ns
-                     archive_mtime = zip_path.stat().st_mtime_ns
-                     # If directory wasn't modified since archive was created, skip state computation
-                     if dir_mtime &lt;= archive_mtime:
-                         quick_skipped += 1
-                         if quick_skipped &lt;= 5:
-                             log("scan", f"Skipping {rel} (unchanged since archive)")
-                         # Still need to check for old .zip cleanup (we have .7z, so .zip is obsolete)
-                         if old_zip_path and old_zip_path.exists():
-                             old_zip_path.unlink(missing_ok=True)
-                             old_state_path = state_path_for(old_zip_path)
-                             if old_state_path.exists():
-                                 old_state_path.unlink(missing_ok=True)
-                         continue
+                 # But first verify that all files in stored state still exist (catches deletions)
+                 try:
+                     # Quick check: verify stored files still exist (catches file deletions)
+                     stored_files_exist = True
+                     for entry in stored_state.get("files", []):
+                         # Skip Thumbs.db entries (they're filtered out anyway)
+                         if Path(entry.get("path", "")).name.lower() == "thumbs.db":
+                             continue
+                         file_path = seq_dir / entry["path"]
+                         if not file_path.exists():
+                             stored_files_exist = False
+                             break
+                     
+                     # Only do mtime check if all stored files still exist
+                     if stored_files_exist:
+                         dir_mtime = seq_dir.stat().st_mtime_ns
+                         archive_mtime = zip_path.stat().st_mtime_ns
+                         # If directory wasn't modified since archive was created, skip state computation
+                         if dir_mtime &lt;= archive_mtime:
+                             quick_skipped += 1
+                             if quick_skipped &lt;= 5:
+                                 log("scan", f"Skipping {rel} (unchanged since archive)")
+                             # Still need to check for old .zip cleanup (we have .7z, so .zip is obsolete)
+                             if old_zip_path and old_zip_path.exists():
+                                 old_zip_path.unlink(missing_ok=True)
+                                 old_state_path = state_path_for(old_zip_path)
+                                 if old_state_path.exists():
+                                     old_state_path.unlink(missing_ok=True)
+                             continue
                  except OSError:
                      # If stat fails, fall through to full state computation
```

</details>

</tool-use>

---



---





---

<tool-use data-tool-type="generic" data-tool-name="read_lints">
<details>
          <summary>Tool use: **read_lints** • Read lints for 1 file</summary>
      
Lint paths:

- `zip_sequences.py`

Lint results


**No lint errors found**
</details>
</tool-use>

---



---


Fixed the issue. The quick-skip optimization was skipping state computation when the directory mtime was <= the archive mtime, which can miss file deletions if the directory mtime doesn't update.

**The fix:** Before the quick-skip, the code now verifies that all files in the stored state still exist. If any are missing (like the JPGs you removed), it skips the quick-skip and recomputes the full state, which will detect the change and update the manifest.

Now when you run `zipseq`:
1. It checks if stored files still exist
2. If JPGs are missing, it recomputes the state
3. It detects the difference and updates the manifest
4. It recompresses the archive with only the remaining PNGs

The manifest should now update correctly when files are removed, even if the directory mtime doesn't change.

---

