[FFmpeg-trac] #872(avutil:new): av_rescale_q returns wrong 64bits in arm cortex-a8 processor
FFmpeg
trac at avcodec.org
Fri Jan 20 13:37:18 CET 2012
#872: av_rescale_q returns wrong 64bits in arm cortex-a8 processor
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Reporter: kaijun61 | Owner: michael
Type: defect | Status: new
Priority: important | Component: avutil
Version: git-master | Resolution:
Keywords: av_rescale_q | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by cehoyos):
Replying to [comment:19 kaijun61]:
> I feel confused about ffmpeg and libav. Before and including
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=a85ce653fb14ae968419453fabf1ffe10d1f15df
commit, both repos. look same.
For several months, there is one (of several) forks of FFmpeg that is
known to contain many (>100) regressions over FFmpeg. Since some of those
bugs in this fork are possibly security-relevant, we strongly recommend
only to use FFmpeg from http://ffmpeg.org (which you can download from the
videolan server). The FFmpeg tree also contains the complete history of
this fork, but there should be no reason for you to use it, the commit you
quote above does come from the mentioned fork, the correct version to test
would be 48706f41 (the subsequent commit):
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=48706f41e1a17e04b0aa09852eff021833708233
> But from this snap, I don't see mathematics.h included. But its previous
one and one after two commits, i.e. one you want me to look at have
mathematics.h. Also after this snap, both libav and ffmpeg have different
commits.
Can you tell me if you can reproduce the problem you described above with
FFmpeg git head (or any released version)?
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/872#comment:20>
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