[FFmpeg-trac] #9173(avcodec:new): Underestimated required buffer size (prores 8K)
FFmpeg
trac at avcodec.org
Wed Apr 7 23:25:51 EEST 2021
#9173: Underestimated required buffer size (prores 8K)
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Reporter: 0kajuna0 | Owner:
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: prores | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by mkver):
1. I could already reproduce the issue with [https://images.nasa.gov
/details-First-8K-Video-from-Space.html a different sample]. Nevertheless
thanks for the effort (have you btw selected FFmpeg as the project? I am
asking because the sample hasn't appeared [https://samples.ffmpeg.org
/ffmpeg-bugs/trac/ here] yet).
2. The problem is basically here: "frame size upper bound: 476932518".
When converted to bits this gives a negative number in a 32bit, leading to
nonsense check results.
3. When I test with an old build of 4.2, the outcome is only slightly
different: It does not stops after having encountered an error; instead it
just keeps on going, but the frames where the error have been encountered
are dropped.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9173#comment:4>
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