Never let a crop failure lose the clip (2.7.5) - #175
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Every moment in a render came back marked "Did not render". The job had died partway and the API marks whatever was still rendering as failed, so one crash strands the lot. utils.proc.run raises on a timeout even when check=False, and 2.7.4 added -shortest to the mixed-layout stitch. That output takes its video from a filtergraph and its audio from a plain input, and -shortest has to wait for both to agree where the end is; on some ffmpeg builds it never does. It did not hang on the build I tested against, which is why this reached production. The stitch now states its length outright. The trigger is one line, the class of bug is not. _track_and_crop is one of several ways to find a crop and every caller already reads None as "try something simpler", falling through to a face-map crop and then a centre crop. An exception skipped all of them and failed the clip instead. It now reports failure the way its callers already handle, and the local mouth-motion planner alongside it does the same. A badly framed clip is recoverable; a missing one is not.
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📝 WalkthroughWalkthroughVideo cropping now treats local reframe and tracking failures as recoverable. Tracking returns ChangesCrop Recovery and Release Update
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to The PR makes crop and tracker failures fall back instead of failing clips and explicitly bounds stitch duration; the only open item is a localized nullable-annotation lint cleanup, with no supplied evidence of production impact or a merge-blocking risk. Sequence Diagram(s)sequenceDiagram
participant CropPipeline
participant _track_and_crop
participant _track_and_crop_inner
CropPipeline->>_track_and_crop: request tracking crop
_track_and_crop->>_track_and_crop_inner: execute tracking
_track_and_crop_inner-->>_track_and_crop: output path or exception
_track_and_crop-->>CropPipeline: output path or None
CropPipeline->>CropPipeline: use fallback crop when result is None
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@backend/services/video_processor.py`:
- Around line 1215-1217: Update the _track_and_crop_inner parameter annotations
so transcript_words uses list | None and face_map uses dict | None, matching
their existing None defaults and resolving Ruff RUF013; leave clip_start
unchanged.
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backend/services/video_processor.pycli/VERSIONpackage.jsontests/test_crop_path_golden.py
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Both parameters default to None while their annotations claim a list and a dict, which is what RUF013 is for. The wrapper inherited the shape from the function it was split out of; state it in both.
1 participant
Every moment in a render came back marked "Did not render". The job died partway and the API marks whatever was still rendering as failed, so one crash strands the lot.
utils.proc.runraises on a timeout even whencheck=False, and 2.7.4 added-shortestto the mixed-layout stitch. That output takes its video from a filtergraph and its audio from a plain input, and-shortesthas to wait for both to agree where the end is; on some ffmpeg builds it never does. It did not hang on the build I tested against, which is why it reached production. The stitch now states its length outright.The trigger is one line, the class of bug is not.
_track_and_cropis one of several ways to find a crop and every caller already reads None as "try something simpler", falling through to a face-map crop and then a centre crop. An exception skipped all of them and failed the clip. It now reports failure the way its callers already handle, and the local mouth-motion planner does the same.704 tests, up from 701. The three new ones assert that a raising tracker, including a ProcError timeout, comes back as None.
Reframing quality is unchanged from 2.7.4: 1-3% of frames with nobody in them, 98% on the speaker's turn for the one clip with real back-and-forth.
Summary by CodeRabbit
Bug Fixes
Release