fix(audio): preserve the parent directory when locating ffprobe - #2107
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 The code change appears behaviorally safe, but the explicit Unreleased changelog-format requirement must be satisfied before merging. SummaryThe PR corrects sibling ffprobe discovery when an ffmpeg parent directory shares the executable name, validates candidate tools by their version-probe exit status, and adds regression coverage and documentation. Reviews (4) · Last reviewed commit: "fix(media): require successful tool vers..." |
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ffprobe path resolution
Priority: ⬇️ Low Estimated code review effort: 2 (Simple) | ~10 minutes Change: Bug fix Merge Risk: ⚪ Minimal · up to The PR preserves sibling ffprobe paths and rejects unusable binaries without introducing an identified merge-blocking risk. 🚥 Pre-merge checks | ✅ 7 | ❌ 2❌ Failed checks (2 warnings)
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Inline comments:
In `@backend/services/ffmpeg_utils.py`:
- Line 316: Update _binary_runs() to retain the subprocess.run result and set
success only when result.returncode equals zero, while preserving exception
handling. Add a regression test for a command whose -version invocation exits
nonzero, ensuring find_ffprobe() rejects it; keep existing execution-exception
and boolean-mock coverage intact.
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backend/services/ffmpeg_utils.pytests/backend/services/test_ffmpeg_utils.py
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Summary
When ffmpeg is installed under a directory named
ffmpegand ffprobe is only available beside it, the sibling fallback changes the parent directory too. For example,C:\ffmpeg\bin\ffmpeg.exebecomesC:\ffprobe\bin\ffprobe.exe. The installed ffprobe is missed, so metadata probing reports the tool unavailable and Smart Fit cannot probe durations.Changes
ffmpegonly in the executable basename, retaining its directory.ffmpegandffmpeg.exesibling names with regression tests.Type
Testing
On this isolated branch,
python -m pytest tests/backend/services/test_ffmpeg_utils.py -q --tb=shortpassed 11 tests, including both new regression cases. The interpreter was reused from the audit environment, with the working directory and importedservices.ffmpeg_utils.__file__verified to belong to this branch.git diff --checkpassed. Both regression cases failed on the reviewed base before the fix.Current-main integration check: this patch was independently applied to
dad59c1318f18492b93ec81e55f49bb2bee458e5. The current upstream source reproduced 2 failures / 9 passes with the regression fixtures; after the fix, the targeted file passed 11 tests, and eight related media/Smart Fit files passed 126 tests. A real one-second WAV again changed from an unavailable application probe (None) to the correct sibling and 1.0 seconds; direct ffprobe reported one second in both versions. The imported module was asserted to belong to the integration worktree before and after pytest, with temporary application data, offline Hugging Face access and an empty cache. The newer main branch's full backend/frontend/native matrix was not rerun.Previously, in the audit checkout containing this fix together with a separate MLX sample-rate fix:
ffmpeg/bindirectory directly read a one-second WAV before the fix whileprobe_durationreturnedNone. After the fix it returned1.0.cargo check --locked --target aarch64-apple-darwinpassed. Serial library tests passed 271 tests, and backend lifecycle tests passed 25 tests.Those broader results belong to the combined audit checkout and were not rerun on this standalone branch. The full Python suite was attempted there but did not pass: missing optional packages and existing platform assumptions prevented a full CI-green result. Windows/Linux native packaging, Docker builds and release installation were not verified. No model weights were downloaded or synthesis quality measured.
Checklist
find_ffprobenow replacesffmpegonly in the executable basename, preserving parent directories namedffmpeg, and rejects candidates whose version probe exits nonzero. Regression tests cover sibling lookup and failed probes; the targeted tests andgit diff --checkpass. No current review findings were supplied.