Function of_stream_init

fftools/ffmpeg_mux.c:611–650

}

int of_stream_init(OutputFile *of, OutputStream *ost,
                   const AVCodecContext *enc_ctx)
{
    Muxer *mux = mux_from_of(of);
    MuxStream *ms = ms_from_ost(ost);
    int ret;

    if (enc_ctx) {
        // use upstream time base unless it has been overridden previously
        if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0)
            ost->st->time_base = av_add_q(enc_ctx->time_base, (AVRational){0, 1});

        ost->st->avg_frame_rate = enc_ctx->framerate;
        ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio;

        ret = avcodec_parameters_from_context(ms->par_in, enc_ctx);
        if (ret < 0) {
            av_log(ost, AV_LOG_FATAL,
                   "Error initializing the output stream codec parameters.\n");
            return ret;
        }
    }

    /* initialize bitstream filters for the output stream
     * needs to be done here, because the codec id for streamcopy is not
     * known until now */
    ret = bsf_init(ms);
    if (ret < 0)
        return ret;

    if (ms->stream_duration) {
        ost->st->duration = av_rescale_q(ms->stream_duration, ms->stream_duration_tb,
                                         ost->st->time_base);
    }

    if (ms->sch_idx >= 0)
        return sch_mux_stream_ready(mux->sch, of->index, ms->sch_idx);

    return 0;
}

static int check_written(OutputFile *of)
{