[FFmpeg-trac] #1171(undetermined:new): h264 to VP8: "non monotonically increasing dts" with 2 pass and vp8flags altref

[FFmpeg]

#1171: h264 to VP8: "non monotonically increasing dts" with 2 pass and vp8flags
altref
-------------------------------------+-------------------------------------
             Reporter:  temporary    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 {{{
 vopts="-c:v libvpx -vp8flags altref -rc_lookahead 5"
 ffmpeg -pass 1 -i testv.mkv -f rawvideo $vopts -y /dev/null
 ffmpeg -pass 2 -i testv.mkv $vopts -y testout.mkv
 }}}
 {{{
 ffmpeg version git-2012-04-05-c99bdd5 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr  5 2012 17:19:33 with gcc 4.6.3
   configuration: --prefix=/usr --enable-gpl --enable-libfaac --enable-
 libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-
 libx264 --enable-nonfree --enable-postproc --enable-x11grab --enable-
 shared
   libavutil      51. 44.100 / 51. 44.100
   libavcodec     54. 12.100 / 54. 12.100
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 66.101 /  2. 66.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 10.100 /  0. 10.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, matroska,webm, from 'testv.mkv':
   Metadata:
     AACAOT          : 2
     AUDIOCHANNELS   : 2
     AVCLEVEL        : 32
     AVCPROFILE      : 77
     MOOVPOSITION    : 28
     VIDEOFRAMERATE  : 25
     ENCODER         : Lavf54.3.100
   Duration: 00:00:01.04, start: 0.000000, bitrate: 2331 kb/s
     Stream #0:0: Video: h264 (Main), yuv420p, 1280x720 [SAR 1:1 DAR 16:9],
 1k fps, 25 tbr, 1k tbn, 50 tbc (default)
 [buffer @ 0x2639d40] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:flags=2
 [libvpx @ 0x26403e0] v1.0.0
 Output #0, rawvideo, to '/dev/null':
   Metadata:
     AACAOT          : 2
     AUDIOCHANNELS   : 2
     AVCLEVEL        : 32
     AVCPROFILE      : 77
     MOOVPOSITION    : 28
     VIDEOFRAMERATE  : 25
     encoder         : Lavf54.3.100
     Stream #0:0: Video: vp8, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--
 1, pass 1, 200 kb/s, 90k tbn, 25 tbc (default)
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> libvpx)
 Press [q] to stop, [?] for help
 frame=   12 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=
 0.0kbits/sframe=   26 fps= 20 q=0.0 Lsize=       0kB time=00:00:00.00
 bitrate=   0.0kbits/s dup=1 drop=0
 video:0kB audio:0kB global headers:0kB muxing overhead -nan%
 Output file is empty, nothing was encoded (check -ss / -t / -frames
 parameters if used)
 ffmpeg version git-2012-04-05-c99bdd5 Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Apr  5 2012 17:19:33 with gcc 4.6.3
   configuration: --prefix=/usr --enable-gpl --enable-libfaac --enable-
 libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-
 libx264 --enable-nonfree --enable-postproc --enable-x11grab --enable-
 shared
   libavutil      51. 44.100 / 51. 44.100
   libavcodec     54. 12.100 / 54. 12.100
   libavformat    54.  3.100 / 54.  3.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 66.101 /  2. 66.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0. 10.100 /  0. 10.100
   libpostproc    52.  0.100 / 52.  0.100
 Input #0, matroska,webm, from 'testv.mkv':
   Metadata:
     AACAOT          : 2
     AUDIOCHANNELS   : 2
     AVCLEVEL        : 32
     AVCPROFILE      : 77
     MOOVPOSITION    : 28
     VIDEOFRAMERATE  : 25
     ENCODER         : Lavf54.3.100
   Duration: 00:00:01.04, start: 0.000000, bitrate: 2331 kb/s
     Stream #0:0: Video: h264 (Main), yuv420p, 1280x720 [SAR 1:1 DAR 16:9],
 1k fps, 25 tbr, 1k tbn, 50 tbc (default)
 [buffer @ 0x1af4d40] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1
 sws_param:flags=2
 [libvpx @ 0x1afb3e0] v1.0.0
 Output #0, matroska, to 'testout.mkv':
   Metadata:
     AACAOT          : 2
     AUDIOCHANNELS   : 2
     AVCLEVEL        : 32
     AVCPROFILE      : 77
     MOOVPOSITION    : 28
     VIDEOFRAMERATE  : 25
     encoder         : Lavf54.3.100
     Stream #0:0: Video: vp8, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--
 1, pass 2, 200 kb/s, 1k tbn, 25 tbc (default)
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 -> libvpx)
 Press [q] to stop, [?] for help
 [matroska @ 0x1afaca0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 0: 80 >= 80
 av_interleaved_write_frame(): Invalid argument
 }}}
 I get no error in 1 pass mode, when I remove "-vp8flags altref", or with
 "-rc_lookahead" < 5.

 The source file was in flv format and was converted to mkv with ffmpeg (a
 simple copy), but the error also happens with the source flv.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1171>
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