[FFmpeg-cvslog] faq: document af_aconvert quirks using lavfi.

[Clément Bœsch]

On Tue, Jan 24, 2012 at 03:58:51PM +0100, Nicolas George wrote:
> ffmpeg | branch: master | Nicolas George <nicolas.george at normalesup.org> | Tue Jan 24 12:42:20 2012 +0100| [9aaa70a845fe8eb26b3d2e264958b8586150d76b] | committer: Nicolas George
> 
> faq: document af_aconvert quirks using lavfi.
> 
> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9aaa70a845fe8eb26b3d2e264958b8586150d76b
> ---
> 
>  doc/faq.texi |   18 ++++++++++++++++++
>  1 files changed, 18 insertions(+), 0 deletions(-)
> 
> diff --git a/doc/faq.texi b/doc/faq.texi
> index bd88da3..3fda98e 100644
> --- a/doc/faq.texi
> +++ b/doc/faq.texi
> @@ -292,6 +292,24 @@ The solution is to apply the @option{-profile} option to the video stream only
>  by using @url{http://ffmpeg.org/ffmpeg.html#Stream-specifiers-1, Stream specifiers}.
>  Appending @code{:v} to it will do exactly that.
>  
> + at section Using @option{-f lavfi}, audio becomes mono for no apparent reason.
> +
> +Use @option{-dumpgraph -} to find out exactly where the channel layout is
> +lost.
> +
> +Most likely, it is through @code{auto-inserted aconvert}. Try to understand
> +why the converting filter was needed at that place.
> +
> +Just before the output is a lilely place, as @option{-f lavfi} currently

Sorry I didn't notice it earlier: lilely?

[...]

-- 
Clément B.
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