[FFmpeg-trac] #6972(undetermined:new): Application provided invalid, non monotonically increasing dts to muxer in stream....resulting in audio synch issues

FFmpeg trac at avcodec.org
Mon Jan 22 04:46:15 EET 2018 

#6972: Application provided invalid, non monotonically increasing dts to muxer in
stream....resulting in audio synch issues
-------------------------------------+-------------------------------------
             Reporter:  RingoTheDog  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by RingoTheDog):

 After some further playing I believe the with the "non monotonically
 increasing dts to muxer in stream 1" error and subsequent out of synch
 issues happen because of the "-async 2" option being added.

 I had been using the async option/originally posted script with many many
 video files over the years, and it has only recently been encountering
 these monotonically increasing dts errors with certain twitter videos.




 {{{




 :\>ffmpeg.exe -i "Andrew Holness.mp4" -vcodec mpeg2video -async 2 -f mxf
 -y "Andrew Holness.MXF"
 ffmpeg version N-89832-g07a96b6251 Copyright (c) 2000-2018 the FFmpeg
 developers
   built with gcc 7.2.0 (GCC)
   configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-
 bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass
 --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-
 libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
 --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr
 --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack
 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2
 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
 libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa
 --enable-libspeex --enable-libmfx --enable-amf --enable-cuda --enable-
 cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
   libavutil      56.  7.100 / 56.  7.100
   libavcodec     58.  9.100 / 58.  9.100
   libavformat    58.  5.100 / 58.  5.100
   libavdevice    58.  0.100 / 58.  0.100
   libavfilter     7. 11.101 /  7. 11.101
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Andrew Holness.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf56.31.100
   Duration: 00:02:11.04, start: 0.000000, bitrate: 720 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 1280x720, 583 kb/s, 29.98 fps, 29.97 tbr, 90k tbn, 59.93 tbc (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
 stereo, fltp, 128 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
 Stream mapping:
   Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native))
   Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
 Press [q] to stop, [?] for help
 -async is forwarded to lavfi similarly to -af
 aresample=async=2:min_hard_comp=0.100000:first_pts=0.
 Output #0, mxf, to 'Andrew Holness.MXF':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf58.5.100
     Stream #0:0(und): Video: mpeg2video (Main), yuv420p, 1280x720, q=2-31,
 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc (default)
     Metadata:
       handler_name    : VideoHandler
       encoder         : Lavc58.9.100 mpeg2video
     Side data:
       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
     Stream #0:1(und): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
 (default)
     Metadata:
       handler_name    : SoundHandler
       encoder         : Lavc58.9.100 pcm_s16le
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 0
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 1007
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 2080
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 7232
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 12384
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 17536
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 22688
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 27840
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 32992
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 38144
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 43296
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 47392
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 48000
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 53152
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 57248
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 61344
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 65440
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 69536
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 73632
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 77728
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 81824
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 85920
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 90016
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 94112
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 98208
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 102304
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 106400
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 110496
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 114592
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 118688
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 122784
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 126880
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 130976
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 135072
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 139168
 [mxf @ 00000220fa5f86c0] Application provided invalid, non monotonically
 increasing dts to muxer in stream 1: 143360 >= 143264
 frame= 3928 fps=332 q=31.0 Lsize=   44313kB time=00:02:11.03
 bitrate=2770.3kbits/s dup=1 drop=0 speed=11.1x
 video:15570kB audio:25134kB subtitle:0kB other streams:0kB global
 headers:0kB muxing overhead: 8.865341%

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6972#comment:2>
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