[FFmpeg-user] libfdk_aac keep audio layout

[Moritz Barsnick]

On Wed, Dec 02, 2015 at 15:26:36 +0000, Kevin Wells wrote:
> ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers

This version is four months old. Please try the latest git HEAD first
to check whether the issue still exists.

> > -map v:0 \

I doubt you really quoted the command line you used. AFAIK, this needs
to be "-map 0:v", the other way around wouldn't work.

>     Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, downmix, s32 (24 bit), 2304 kb/s (default)
>     Metadata:
>       creation_time   : 2015-11-06 12:04:34
>       handler_name    : Apple Alias Data Handler

Indeed, this looks like a multichannel stream (to me), but apparently
ffmpeg recognizes it as one channel, and subsequently:

>     Stream #0:7(eng): Audio: aac (libfdk_aac), 48000 Hz, mono, s16 (24 bit), 384 kb/s (default)
>     Metadata:
>       creation_time   : 2015-11-06 12:04:34
>       handler_name    : Apple Alias Data Handler
>       encoder         : Lavc56.41.100 libfdk_aac

converts it to mono.

I don't what the MOV demuxer is doing wrong. Perhaps it would be
helpful if you could share one of your files, but preferrably a
significantly shorter one. ;-)

But try latest git (or significantly newer) ffmpeg first please.

Moritz