Function of_open

fftools/ffmpeg_mux_init.c:3330–3499

}

int of_open(const OptionsContext *o, const char *filename, Scheduler *sch)
{
    Muxer *mux;
    AVFormatContext *oc;
    int err;
    OutputFile *of;

    int64_t recording_time = o->recording_time;
    int64_t stop_time      = o->stop_time;

    mux = mux_alloc();
    if (!mux)
        return AVERROR(ENOMEM);

    of  = &mux->of;

    if (stop_time != INT64_MAX && recording_time != INT64_MAX) {
        stop_time = INT64_MAX;
        av_log(mux, AV_LOG_WARNING, "-t and -to cannot be used together; using -t.\n");
    }

    if (stop_time != INT64_MAX && recording_time == INT64_MAX) {
        int64_t start_time = o->start_time == AV_NOPTS_VALUE ? 0 : o->start_time;
        if (stop_time <= start_time) {
            av_log(mux, AV_LOG_ERROR, "-to value smaller than -ss; aborting.\n");
            return AVERROR(EINVAL);
        } else {
            recording_time = stop_time - start_time;
        }
    }

    of->recording_time = recording_time;
    of->start_time     = o->start_time;

    mux->limit_filesize    = o->limit_filesize;
    av_dict_copy(&mux->opts, o->g->format_opts, 0);

    if (!strcmp(filename, "-"))
        filename = "pipe:";

    err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
    if (!oc) {
        av_log(mux, AV_LOG_FATAL, "Error initializing the muxer for %s: %s\n",
               filename, av_err2str(err));
        return err;
    }
    mux->fc = oc;

    av_strlcat(mux->log_name, "/",               sizeof(mux->log_name));
    av_strlcat(mux->log_name, oc->oformat->name, sizeof(mux->log_name));


    if (recording_time != INT64_MAX)
        oc->duration = recording_time;

    oc->interrupt_callback = int_cb;

    if (o->bitexact) {