[FFmpeg-trac] #2580(avcodec:new): FLV h264 video decoding corrupted
FFmpeg
trac at avcodec.org
Fri May 17 00:04:57 CEST 2013
#2580: FLV h264 video decoding corrupted
-------------------------------------+-----------------------------------
Reporter: relevante | Owner:
Type: defect | Status: new
Priority: normal | Component: avcodec
Version: unspecified | Resolution:
Keywords: h264 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-----------------------------------
Comment (by ubitux):
Replying to [comment:3 cehoyos]:
> Replying to [comment:2 ubitux]:
> > Replying to [comment:1 cehoyos]:
> > > Is an external library (-vcodec libx264) needed to reproduce this
problem or is it also reproducible with a native encoder?
> >
> > The problem is in the h264 decoder (or eventually flv demuxer), not
related to the encoding process (it can be reproduced with ffplay).
>
> Is it only reproducible with ffplay but not with ffmpeg? If it is
reproducible with ffmpeg, please provide a command line (ffmpeg -i file -t
16 -an out.avi) together with the complete, uncut console output to make
this a valid ticket.
>
I pointed out ffplay to insist on the fact that it's not a problem in the
encoding.
{{{
% ./ffmpeg -i /tmp/58af5798-fa2c-42a2-997d-dc8e49de2d8a.flv -t 17 -an -f
null -
ffmpeg version N-53165-g3da726f Copyright (c) 2000-2013 the FFmpeg
developers
built on May 16 2013 23:20:30 with gcc 4.8.0 (GCC) 20130502 (prerelease)
configuration: --enable-gpl --enable-version3 --enable-fontconfig
--enable-libfreetype --enable-libmp3lame --enable-libvorbis --enable-
libxvid --enable-libx264 --enable-libvpx --enable-libtheora --enable-
x11grab --enable-libopenjpeg --enable-libass --enable-libmodplug --enable-
libv4l2 --cc=colorgcc --samples=/home/ubitux/fate-samples
--prefix=/tmp/ffinstall --disable-runtime-cpudetect --enable-libcelt
--enable-libopencv --enable-frei0r --enable-libcaca --enable-libiec61883
--enable-libopencore-amrwb --enable-libopencore-amrnb --enable-libopus
--enable-libpulse --enable-libspeex --enable-libquvi --assert-level=2
--enable-libzmq
libavutil 52. 32.100 / 52. 32.100
libavcodec 55. 9.100 / 55. 9.100
libavformat 55. 7.100 / 55. 7.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 68.101 / 3. 68.101
libswscale 2. 3.100 / 2. 3.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 3.100 / 52. 3.100
Input #0, flv, from '/tmp/58af5798-fa2c-42a2-997d-dc8e49de2d8a.flv':
Metadata:
creationdate : Wed May 8 10:49:33
Duration: 00:09:56.16, start: 0.000000, bitrate: 346 kb/s
Stream #0:0: Video: h264 (Baseline), yuv420p, 192x144, 15 tbr, 1k tbn,
2k tbc
Stream #0:1: Audio: speex, 16000 Hz, mono, s16
Output #0, null, to 'pipe:':
Metadata:
creationdate : Wed May 8 10:49:33
encoder : Lavf55.7.100
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 192x144,
q=2-31, 200 kb/s, 90k tbn, 15 tbc
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> rawvideo)
Press [q] to stop, [?] for help
[null @ 0x351a040] Encoder did not produce proper pts, making some up.
[h264 @ 0x3438a20] Overread VUI by 2 bits
[h264 @ 0x3438a20] left block unavailable for requested intra mode at 0 8
[h264 @ 0x3438a20] error while decoding MB 0 8
[h264 @ 0x3438a20] concealing 61 DC, 61 AC, 61 MV errors in I frame
[h264 @ 0x343baa0] out of range intra chroma pred mode at 0 4
[h264 @ 0x351b080] left block unavailable for requested intra mode at 0 2
[h264 @ 0x351b080] error while decoding MB 0 2
[h264 @ 0x343baa0] error while decoding MB 0 4
[h264 @ 0x351baa0] negative number of zero coeffs at 0 2
[h264 @ 0x343baa0] Cannot use next picture in error concealment
[h264 @ 0x351baa0] error while decoding MB 0 2
[h264 @ 0x343baa0] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x351baa0] Cannot use next picture in error concealment
[h264 @ 0x351b080] [h264 @ 0x343c220] out of range intra chroma pred mode
at 6 4
Cannot use next picture in error concealment
[h264 @ 0x351baa0] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x351b080] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x343c220] error while decoding MB 6 4
[h264 @ 0x343c220] Cannot use next picture in error concealment
[h264 @ 0x343c220] concealing 103 DC, 103 AC, 103 MV errors in P frame
[h264 @ 0x343d680] P sub_mb_type 8 out of range at 6 1
[h264 @ 0x343d680] error while decoding MB 6 1
[h264 @ 0x343d680] Cannot use next picture in error concealment
[h264 @ 0x3438a20] P sub_mb_type 32 out of range at 0 4
[h264 @ 0x343d680] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x3438a20] error while decoding MB 0 4
[h264 @ 0x343c220] Overread VUI by 2 bits
[h264 @ 0x3438a20] Cannot use next picture in error concealment
[h264 @ 0x3438a20] [h264 @ 0x343c220] negative number of zero coeffs at 8
1
[h264 @ 0x343baa0] P sub_mb_type 25 out of range at 0 2
[h264 @ 0x343c220] error while decoding MB 8 1
[h264 @ 0x343c220] concealing 108 DC, 108 AC, 108 MV errors in I frame
concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x343baa0] error while decoding MB 0 2
[h264 @ 0x343baa0] Cannot use next picture in error concealment
[h264 @ 0x343baa0] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x351b080] P sub_mb_type 6 out of range at 6 8
[h264 @ 0x351b080] error while decoding MB 6 8
[h264 @ 0x3438a20] out of range intra chroma pred mode at 1 1
[h264 @ 0x3438a20] error while decoding MB 1 1
[h264 @ 0x351b080] Cannot use next picture in error concealment
[h264 @ 0x3438a20] Cannot use next picture in error concealment
[h264 @ 0x351b080] concealing 55 DC, 55 AC, 55 MV errors in P frame
[h264 @ 0x3438a20] concealing 108 DC, 108 AC, 108 MV errors in P frame
[h264 @ 0x3439460] mb_type 498 in P slice too large at 10 3
[h264 @ 0x3439460] error while decoding MB 10 3
[h264 @ 0x3439460] Cannot use next picture in error concealment
[h264 @ 0x3439460] concealing 108 DC, 108 AC, 108 MV errors in P frame
frame= 255 fps=0.0 q=0.0 Lsize=N/A time=00:00:17.00 bitrate=N/A dup=14
drop=0
video:24kB audio:0kB subtitle:0 global headers:0kB muxing overhead
-100.089869%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2580#comment:4>
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