On Mon, Sep 11, 2017 at 09:23:36AM +0200, Fr?d?ric Busnel-Joncour wrote:
> > Looks like you need to resample audio to sample rate ac3 supports.
>
> I've just tried to convert two different Dolby E source from wav to u8, then
> ffprobe recognize them as a Dolby E stream, but it says that they're 44800Hz,
> I guess it should be 48000Hz. Perhaps there's a bug here ?
Here are the results that I get:
ffprobe out.dat
ffprobe version N-87196-g6cadbb1 Copyright (c) 2007-2017 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 @ 000000000068bfc0] 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
ffprobe out.wav
ffprobe version N-87196-g6cadbb1 Copyright (c) 2007-2017 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
Notice that I get 53706 Hz, 7.1 and 16bits. The audio is 5.1. It is for
broacast, so it is 48kHz.
> But I unfortunately can't use ffplay to play it, there a compilation bug on
> my fedora 24 box with this last ffmpeg release (very annoying by the way, I
> must investigate it).
>
I do not have the audio connected on my Win7 box. I still tried it and it
complained trying to set up 8, 6 and 4 channels. The 53706 Hz attempted as
well.
MB
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