[FFmpeg-user] Dolby E decoder

Mike Brown brown at mrvideo.vidiot.com
Sun Sep 10 10:51:17 EEST 2017


On Sat, Sep 09, 2017 at 05:24:24PM +0300, foo86 wrote:
> On Fri, Sep 08, 2017 at 05:08:54PM -0500, Mike Brown wrote:
> > On Fri, Sep 08, 2017 at 03:55:35PM +0200, Paul B Mahol wrote:
> > > You need to override input decoder so S302 is not used.
> > 
> > Any update on how I override the s302 decoder?
> 
> You don't want to override s302m decoder, it has to be used to process
> non-PCM data in TS to obtain s337m compliant stream that FFmpeg will
> recognize as such and decode as Dolby E.
> 
> -non_pcm_mode copy parameter has to be passed to s302m decoder since by
> default it drops non-PCM.
> 
> Correct command line for your case (extract and decode 20-bit Dolby E)
> would be:
> 
>     ffmpeg -non_pcm_mode copy -i input_test.ts -map 0:1 -c:a pcm_s24le -f s24le out.dat
>     ffmpeg -i out.dat out.wav

Here is the result:

ffmpeg -non_pcm_mode copy -i input_test.ts -map 0:1 -c:a pcm_s24le -f s24le out.dat
ffmpeg version N-87196-g6cadbb1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.1.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 74.100 / 55. 74.100
  libavcodec     57.105.100 / 57.105.100
  libavformat    57. 81.100 / 57. 81.100
  libavdevice    57.  8.100 / 57.  8.100
  libavfilter     6.101.100 /  6.101.100
  libswscale      4.  7.103 /  4.  7.103
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
    Last message repeated 1 times
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
[mpeg2video @ 000000000049c4e0] Invalid frame dimensions 0x0.
[s302m @ 000000000049d560] S302 non PCM mode with data type 28 not supported
    Last message repeated 18 times
[mpegts @ 00000000005670e0] decoding for stream 1 failed
[mpegts @ 00000000005670e0] PES packet size mismatch
    Last message repeated 2 times
[mpegts @ 00000000005670e0] Could not find codec parameters for stream 1 (Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s): unspecified sample rate
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mpegts, from 'input_test.ts':
  Duration: 00:00:19.19, start: 94349.992444, bitrate: 43715 kb/s
  Program 1
    Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 40266 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x33](eng): Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s
    Stream #0:2[0x34](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
    Stream #0:3[0x35](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 256 kb/s
    Stream #0:4[0x3b]: Data: bin_data (LU-A / 0x412D554C)
Stream mapping:
  Stream #0:1 -> #0:0 (s302m (native) -> pcm_s24le (native))
Press [q] to stop, [?] for help
Output #0, s24le, to 'out.dat':
  Metadata:
    encoder         : Lavf57.81.100
    Stream #0:0(eng): Audio: pcm_s24le, 48000 Hz, stereo, s32 (20 bit), 2304 kb/s
    Metadata:
      encoder         : Lavc57.105.100 pcm_s24le
[mpegts @ 00000000005670e0] PES packet size mismatch
[s302m @ 00000000022924e0] frame has invalid header
Error while decoding stream #0:1: Invalid data found when processing input
size=    5330kB time=00:00:18.95 bitrate=2304.0kbits/s speed= 202x
video:0kB audio:5330kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%


ffmpeg -i out.dat out.wav
ffmpeg version N-87196-g6cadbb1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.1.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 74.100 / 55. 74.100
  libavcodec     57.105.100 / 57.105.100
  libavformat    57. 81.100 / 57. 81.100
  libavdevice    57.  8.100 / 57.  8.100
  libavfilter     6.101.100 /  6.101.100
  libswscale      4.  7.103 /  4.  7.103
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
[dolby_e @ 000000000034ba60] Stream has 2 programs (configuration 0), channels will be output in native order.
Input #0, s337m, from 'out.dat':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Audio: dolby_e, 53706 Hz, 7.1, fltp
Stream mapping:
  Stream #0:0 -> #0:0 (dolby_e (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
[dolby_e @ 00000000003ef760] Stream has 2 programs (configuration 0), channels will be output in native order.
Output #0, wav, to 'out.wav':
  Metadata:
    ISFT            : Lavf57.81.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 53706 Hz, 7.1, s16, 6874 kb/s
    Metadata:
      encoder         : Lavc57.105.100 pcm_s16le
size=   15876kB time=00:00:18.91 bitrate=6874.6kbits/s speed= 126x
video:0kB audio:15876kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000627%


ffmpeg -drc_scale 0 -i out.wav -c:a ac3 -ab 640k -center_mixlev 0.707 output_test.ac3
ffmpeg version N-87196-g6cadbb1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 7.1.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 74.100 / 55. 74.100
  libavcodec     57.105.100 / 57.105.100
  libavformat    57. 81.100 / 57. 81.100
  libavdevice    57.  8.100 / 57.  8.100
  libavfilter     6.101.100 /  6.101.100
  libswscale      4.  7.103 /  4.  7.103
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
Input #0, wav, from 'out.wav':
  Metadata:
    encoder         : Lavf57.81.100
  Duration: 00:00:18.92, bitrate: 6874 kb/s
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 53706 Hz, 7.1, s16, 6874 kb/s
Codec AVOption drc_scale (percentage of dynamic range compression to apply) specified for input file #0 (out.wav) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some decoder which was not actually used for any stream.
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s16le (native) -> ac3 (native))
Press [q] to stop, [?] for help
[ac3 @ 000000000044eee0] invalid sample rate
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!


MB
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