[FFmpeg-devel] [PATCH] Calculate and store mov bitrate.

[Baptiste Coudurier]

On 2/26/2009 7:17 AM, Haim Alon wrote:
> Hi,
> 
> This patch calculates and mov bitrate and stores it in AVCodecContext
> structure.
> Regards,
> Haim.
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> Index: libavformat/mov.c
> ===================================================================
> --- libavformat/mov.c	(revision 17613)
> +++ libavformat/mov.c	(working copy)
> @@ -1236,6 +1236,7 @@
>      unsigned int stsc_index = 0;
>      unsigned int stss_index = 0;
>      unsigned int i, j;
> +    int64_t stream_size = 0;
>  
>      /* adjust first dts according to edit list */
>      if (sc->time_offset) {
> @@ -1279,6 +1280,7 @@
>                              current_offset, current_dts, sample_size, distance, keyframe);
>                  }
>                  current_offset += sample_size;
> +                stream_size += sample_size;
>                  assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
>                  current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
>                  distance++;
> @@ -1290,6 +1292,8 @@
>                  }
>              }
>          }
> +        double duration =  (mov->duration/(double)mov->time_scale);
> +        st->codec->bit_rate = (stream_size*8.0)/duration;

This is wrong, stream duration must be used, not mov->duration.

-- 
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