Opened 4 years ago

Closed 4 years ago

#7703 closed defect (invalid)

Dolby TrueHD: 100 buffers queued in out_0_0, something may be wrong

Reported by: flx90 Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


I'm trying to convert Dolby TrueHD embedded in mkv container to alac and mux it into mp4(m4v)-container.
I get the following message: [out_0_0 @ 000000000045a0c0] 100 buffers queued in out_0_0, something may be wrong.

This can be replicated using one of those Dolby Trailers:

The message occurs with every output (alac, flac, wav, ...).

Uncut console output:

ffmpeg -i Dolby_Bit_Harvest_Lossless-thedigitaltheater.mkv -map 0:1 -c:a alac Dolby_Bit_Harvest_Lossless-thedigitaltheater.m4v
ffmpeg version N-93022-g260f1960e7 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8.2.1 (GCC) 20181201
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --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-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 26.100 / 56. 26.100
  libavcodec     58. 44.100 / 58. 44.100
  libavformat    58. 26.100 / 58. 26.100
  libavdevice    58.  6.101 / 58.  6.101
  libavfilter     7. 48.100 /  7. 48.100
  libswscale      5.  4.100 /  5.  4.100
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Input #0, matroska,webm, from 'Dolby_Bit_Harvest_Lossless-thedigitaltheater.mkv':
    encoder         : libmakemkv v1.9.5 (1.3.0/1.4.1) win(x64-release)
    creation_time   : 2015-08-29T18:56:26.000000Z
  Duration: 00:00:11.01, start: 0.000000, bitrate: 12615 kb/s
    Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1920x1080, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
    Stream #0:1(eng): Audio: truehd, 48000 Hz, 7.1, s32 (24 bit) (default)
      title           : Surround 7.1
Stream mapping:
  Stream #0:1 -> #0:0 (truehd (native) -> alac (native)) Press [q] to stop, [?] for help Output #0, ipod, to 'Dolby_Bit_Harvest_Lossless-thedigitaltheater.m4v':
    encoder         : Lavf58.26.100
    Stream #0:0(eng): Audio: alac (alac / 0x63616C61), 48000 Hz, 6.1(back), s32p (24 bit), 128 kb/s (default)
      title           : Surround 7.1
      encoder         : Lavc58.44.100 alac
[out_0_0 @ 000000000045a0c0] 100 buffers queued in out_0_0, something may be wrong.
[truehd @ 0000000002ff7640] End of stream indicated.
size=    5179kB time=00:00:11.09 bitrate=3824.1kbits/s speed=22.9x    
video:0kB audio:5177kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.040051%

Change History (3)

comment:1 by Hendrik, 4 years ago

Is something actually wrong, or does the file come out fine?
TrueHD is special in the sense that it has particularly small frames, which can result in larger frame queues then ordinarily expected.

Last edited 4 years ago by Hendrik (previous) (diff)

comment:2 by flx90, 4 years ago

File is fine.

comment:3 by Carl Eugen Hoyos, 4 years ago

Resolution: invalid
Status: newclosed

Thank you Hendrik, I wasn't sure if I remember the issue correctly.

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