[FFmpeg-user] 7.1 Audio support in ffmpeg

[Varsha Godage]

Carl,



I am getting similar observation for other codes as well which supports
8channel audio.



Console output for DTS:

C:\ffmpeg\ffmpeg-20150415-git-fbdaebb-win64-shared\bin>ffmpeg.exe -i
v:Content\multichannel_content\WAV\8_Channel_ID_192.wav -acodec dca

 -strict -2 8ch_dts.mkv

ffmpeg version N-71455-gfbdaebb Copyright (c) 2000-2015 the FFmpeg
developers

  built with gcc 4.9.2 (GCC)

  configuration: --disable-static --enable-shared --enable-gpl
--enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib -

-enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca -

-enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm
--enable-libilbc --enable-libmodplug --enable-libmp3lame --enable

-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-libopus --enable-librtmp --enable-libschroedinger --enable-l

ibsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enab

le-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --

enable-lzma --enable-decklink --enable-zlib

  libavutil      54. 22.101 / 54. 22.101

  libavcodec     56. 34.100 / 56. 34.100

  libavformat    56. 30.100 / 56. 30.100

  libavdevice    56.  4.100 / 56.  4.100

  libavfilter     5. 14.100 /  5. 14.100

  libswscale      3.  1.101 /  3.  1.101

  libswresample   1.  1.100 /  1.  1.100

  libpostproc    53.  3.100 / 53.  3.100

Guessed Channel Layout for  Input Stream #0.0 : 7.1

Input #0, wav, from
'v:Content\multichannel_content\WAV\8_Channel_ID_192.wav':

  Metadata:

    encoder         : Lavf55.33.100

  Duration: 00:00:12.06, bitrate: 36864 kb/s

    Stream #0:0: Audio: pcm_s24le ([1][0][0][0] / 0x0001), 192000 Hz, 8
channels, s32 (24 bit), 36864 kb/s

File '8ch_dts.mkv' already exists. Overwrite ? [y/N] y

Output #0, matroska, to '8ch_dts.mkv':

  Metadata:

    encoder         : Lavf56.30.100

    Stream #0:0: Audio: dts (dca) ([1] [0][0] / 0x2001), 48000 Hz,
5.1(side), s32 (24 bit), 1411 kb/s

    Metadata:

      encoder         : Lavc56.34.100 dca

Stream mapping:

  Stream #0:0 -> #0:0 (pcm_s24le (native) -> dts (dca))

Press [q] to stop, [?] for help

size=    2090kB time=00:00:12.06 bitrate=1419.4kbits/s

video:0kB audio:2082kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.400247%



Regards,

Varsha

On Tue, Jun 2, 2015 at 11:35 AM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Varsha Godage <vargodage <at> gmail.com> writes:
>
> >  C:\ffmpeg\ffmpeg-20150415-git-fbdaebb-win64-shared\bin>ffmpeg.exe -i
> > v:Content\multichannel_content\WAV\8_Channel_ID_48.wav -acodec ac3
>
> ac3 does not support more than six channels, this is
> not a limitation of FFmpeg.
>
> Carl Eugen
>
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