[Ffmpeg-devel] [PATCH] from DivX, Part 4: LAME ABR encoding

[Rich Felker]

On Fri, Dec 16, 2005 at 11:34:11AM -1000, Steve Lhomme wrote:
> As the name suggests, this adds a flag to FFMPEG to allow Average 
> Bitrate encoding using LAME.

> Index: libavcodec/avcodec.h
> ===================================================================
> RCS file: /cvsroot/ffmpeg/ffmpeg/libavcodec/avcodec.h,v
> retrieving revision 1.430
> diff -u -r1.430 avcodec.h
> --- libavcodec/avcodec.h	9 Dec 2005 16:08:18 -0000	1.430
> +++ libavcodec/avcodec.h	16 Dec 2005 21:30:04 -0000
> @@ -320,6 +320,7 @@
>  
>  #define CODEC_FLAG_QSCALE 0x0002  ///< use fixed qscale 
>  #define CODEC_FLAG_4MV    0x0004  ///< 4 MV per MB allowed / Advanced prediction for H263
> +#define CODEC_FLAG_ABR    0x0008  ///< use ABR mode (DivX Inc)

Is this really necessary? IMO lavc should always be in 'abr' mode
unless minrate/maxrate are set (cbr) or constant quality (vbr) is
set...

Rich