Function stream_params_copy

libavformat/avformat.c:206–240

* Copy all stream parameters from source to destination stream, with the * exception of the index field, which is usually set by avformat_new_stream(). * * @param dst pointer to destination AVStream * @param src pointer to source AVStream * @return >=0 on success, AVERROR code on error */

 * @return >=0 on success, AVERROR code on error
 */
static int stream_params_copy(AVStream *dst, const AVStream *src)
{
    int ret;

    dst->id                  = src->id;
    dst->time_base           = src->time_base;
    dst->start_time          = src->start_time;
    dst->duration            = src->duration;
    dst->nb_frames           = src->nb_frames;
    dst->disposition         = src->disposition;
    dst->discard             = src->discard;
    dst->sample_aspect_ratio = src->sample_aspect_ratio;
    dst->avg_frame_rate      = src->avg_frame_rate;
    dst->event_flags         = src->event_flags;
    dst->r_frame_rate        = src->r_frame_rate;
    dst->pts_wrap_bits       = src->pts_wrap_bits;

    av_dict_free(&dst->metadata);
    ret = av_dict_copy(&dst->metadata, src->metadata, 0);
    if (ret < 0)
        return ret;

    ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
    if (ret < 0)
        return ret;

    av_packet_unref(&dst->attached_pic);
    if (src->attached_pic.data) {
        ret = av_packet_ref(&dst->attached_pic, &src->attached_pic);
        if (ret < 0)
            return ret;
    }

    return 0;
}

AVStream *ff_stream_clone(AVFormatContext *dst_ctx, const AVStream *src)
{