On Thu, 19 Jan 2012 15:01:20 -0500, Justin Ruggles <[email protected]> 
wrote:
> Also, use the sample rate as the time base.
> ---
>  libavformat/bethsoftvid.c |   11 ++++++++---
>  1 files changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/libavformat/bethsoftvid.c b/libavformat/bethsoftvid.c
> index 204960b..6a73f62 100644
> --- a/libavformat/bethsoftvid.c
> +++ b/libavformat/bethsoftvid.c
> @@ -42,9 +42,9 @@ typedef struct BVID_DemuxContext
>       * to free, unofficial documentation) */
>      int bethsoft_global_delay;
>  
> -    /** video presentation time stamp.
> -     * delay = 16 milliseconds * (global_delay + per_frame_delay) */
> -    int video_pts;
> +    int video_pts;          /**< video time stamp */
> +    int audio_pts;          /**< audio time stamp */
> +
>      uint8_t *palette;
>  
>      int is_finished;
> @@ -122,6 +122,7 @@ static int read_frame(BVID_DemuxContext *vid, AVIOContext 
> *pb, AVPacket *pkt,
>      vidbuf_start[vidbuf_nbytes++] = block_type;
>  
>      // get the video delay (next int16), and set the presentation time
> +    // duration = approx. 16 ms * (global_delay + per_frame_delay)
>      duration = vid->bethsoft_global_delay + avio_rl16(pb);
>  
>      // set the y offset if it exists (decoder header data should be in data 
> section)
> @@ -226,6 +227,7 @@ static int vid_read_packet(AVFormatContext *s,
>              // soundblaster DAC used for sample rate, as on specification 
> page (link above)
>              s->streams[1]->codec->sample_rate = 1000000 / (256 - 
> avio_r8(pb));
>              s->streams[1]->codec->bit_rate = s->streams[1]->codec->channels 
> * s->streams[1]->codec->sample_rate * 
> s->streams[1]->codec->bits_per_coded_sample;
> +            avpriv_set_pts_info(s->streams[1], 64, 1, 
> s->streams[1]->codec->sample_rate);

Is the timebase allowed to change during read packet like this?
I expect it's not.

-- 
Anton Khirnov
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