[FFmpeg-trac] #1029(undetermined:open): first keyframe is missed in h264 mpegts stream (was: mpegts demuxer problems)

[FFmpeg]

#1029: first keyframe is missed in h264 mpegts stream
-------------------------------------+-------------------------------------
             Reporter:  DonMoir      |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  mpegts h264  |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  avformat => undetermined
 * version:  unspecified => git-master
 * keywords:   => mpegts h264


Comment:

 The following ffmpeg command line produces a keyframe, compared with the
 following mplayer command line, it can be seen that it is the second
 keyframe of the stream.
 {{{
 $ ffmpeg -i mpegts_problem_file.ts -vframes 1 out.png
 ffmpeg version N-42870-g1c2beff Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jul 25 2012 09:12:59 with gcc 4.3.2 (GCC)
   configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-
 libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame
 --enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs
 --enable-x11grab --enable-libass --enable-nonfree --enable-libfaac
 --enable-libopus
   libavutil      51. 65.100 / 51. 65.100
   libavcodec     54. 44.100 / 54. 44.100
   libavformat    54. 20.100 / 54. 20.100
   libavdevice    54.  2.100 / 54.  2.100
   libavfilter     3.  3.100 /  3.  3.100
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 15.100 /  0. 15.100
   libpostproc    52.  0.100 / 52.  0.100
 [h264 @ 0x90cebc0] non-existing PPS referenced
 [h264 @ 0x90cebc0] non-existing PPS 0 referenced
 [h264 @ 0x90cebc0] decode_slice_header error
 [h264 @ 0x90cebc0] no frame!

 [...]

 [h264 @ 0x90cebc0] non-existing PPS referenced
 [h264 @ 0x90cebc0] non-existing PPS 0 referenced
 [h264 @ 0x90cebc0] decode_slice_header error
 [h264 @ 0x90cebc0] no frame!
 [mpegts @ 0x90b6500] max_analyze_duration 5000000 reached at 5016000
 [mpegts @ 0x90b6500] PES packet size mismatch
 Input #0, mpegts, from 'mpegts_problem_file.ts':
   Duration: 00:00:25.36, start: 7140.559933, bitrate: 1875 kb/s
   Program 5041
   Program 5042
   Program 5043
   Program 5044
   Program 5045
   Program 5047
   Program 5048
   Program 5049
   Program 5040
   Program 5056
   Program 5046
   Program 5061
   Program 5064
   Program 5065
   Program 5058
   Program 5059
     Stream #0:0[0xfb3]: Video: h264 (High) ([27][0][0][0] / 0x001B),
 yuv420p, 704x576 [SAR 12:11 DAR 4:3], 28.61 fps, 25 tbr, 90k tbn, 50 tbc
     Stream #0:1[0x1053](cze): Audio: mp2 ([3][0][0][0] / 0x0003), 48000
 Hz, stereo, s16, 192 kb/s
   Program 5057
 Output #0, image2, to 'out.png':
   Metadata:
     encoder         : Lavf54.20.100
     Stream #0:0: Video: png, rgb24, 704x576 [SAR 12:11 DAR 4:3], q=2-31,
 200 kb/s, 90k tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> png)
 Press [q] to stop, [?] for help
 [h264 @ 0x90cebc0] reference picture missing during reorder
     Last message repeated 1 times
 [h264 @ 0x90cebc0] Missing reference picture
 [h264 @ 0x90cebc0] decode_slice_header error
 [h264 @ 0x90cebc0] concealing 1584 DC, 1584 AC, 1584 MV errors in P frame
 [h264 @ 0x90cebc0] reference picture missing during reorder
 [h264 @ 0x90cebc0] Missing reference picture
 frame=    1 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=
 0.0kbits/s dup=0 drop=2
 video:435kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 -100.000000%
 }}}
 The following command produces 19 frames, frame 00000007.png (-
 000000018.png) shows the first keyframe, 00000019.png the second one (that
 ffmpeg shows above).
 {{{
 $ mplayer mpegts_problem_file.ts -demuxer lavf -lavdopts skipframe=nonkey
 -vo png -frames 19
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1029#comment:2>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker