[FFmpeg-devel] [PATCH] Initializing pack_header_freq

[Diep Ho]

<Ding> 

> -----Original Message-----
> From: ffmpeg-devel-bounces at mplayerhq.hu [mailto:ffmpeg-devel-
> bounces at mplayerhq.hu] On Behalf Of Diep Ho
> Sent: lundi 1 septembre 2008 15:41
> To: ffmpeg-devel at mplayerhq.hu
> Subject: [FFmpeg-devel] [PATCH] Initializing pack_header_freq
> 
> I propose to use mux_rate to set the value of pack_header_freq. This
> should provide a better value when in VBR mode. Moreover, it is
> configurable through mux_rate.
> 
> Rgds,
> 
> DHO
> 
> 
> 
> ===================================================================
> 
> --- libavformat/mpegenc.c         (revision 15138)
> 
> +++ libavformat/mpegenc.c      (working copy)
> 
> @@ -451,7 +451,7 @@
> 
>          s->pack_header_freq = 1;
> 
>      else
> 
>          /* every 2 seconds */
> 
> -        s->pack_header_freq = 2 * bitrate / s->packet_size / 8;
> 
> +        s->pack_header_freq = 2 * 50 * s->mux_rate / s->packet_size;
> 
> 
> 
>      /* the above seems to make pack_header_freq zero sometimes */
> 
>      if (s->pack_header_freq == 0)