#9458: ffmpeg's outputs differ a lot when compiled with gcc and clang
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Reporter: Shaohua Li | Owner: (none)
Type: defect | Status: reopened
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: race | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Changes (by mkver):
* keywords: => race
* resolution: invalid =>
* status: closed => reopened
* component: undetermined => avcodec
Comment:
It's a race in the MPEG-4 encoder (and as such unreproducible with one
encoder thread). Reads in ff_mpeg4_pred_dc() are not synced with writes in
ff_mpeg4_pred_dc() as well as ff_clean_intra_table_entries(). The same
races happen in the vsynth*-mpeg4-thread-tests (with x from 1..3, _lena).
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Ticket URL: <https://trac.ffmpeg.org/ticket/9458#comment:7>
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