[FFmpeg-trac] #3449(undetermined:new): av_parser_parse2 fails on H264 elementary stream
FFmpeg
trac at avcodec.org
Mon Mar 10 13:10:58 CET 2014
#3449: av_parser_parse2 fails on H264 elementary stream
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Reporter: lordAtticus | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Latest, including 2.x releases of ffmpeg have updated the function
h264_find_frame_end in file h264_parser.c. The optimised assembler
functions called from above function return incorrect values on x64 and
ARM platforms.
Older, c code implementations found in 1.2.6 version of ffmpeg behave
correctly. With latest ffmpeg I was unable to parse correctly H264
elementary streams, that contained multiple nalus in the input buffer. I
use only avcodec part of ffmpeg programatically, so I don't know how could
I trigger ffmpeg to use av_parser to build a test case. I can glady supply
a test stream should it be necessary. Also I have tried replacing the asm
part with the code from 1.2.6 release and that fixes the problem, so I
suspect a bug in the asm.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3449>
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