Quoting James Almer (2020-02-18 17:13:35)
> +static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
> +{
> + OutputStream *os = &c->streams[pkt->stream_index];
> + int side_data_size;
> + AVProducerReferenceTime *prft;
> +
> + if (!c->write_prft)
> + return 0;
> +
> + prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt,
> AV_PKT_DATA_PRFT, &side_data_size);
> + if (!prft || side_data_size != sizeof(AVProducerReferenceTime) ||
> prft->flags) {
> + // No encoder generated AVProducerReferenceTime side data. Instead
> of letting the mov muxer
> + // generate a capture-time one for the first packet, do it here so
> we can also use it for the
> + // manifest.
> + prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt,
> AV_PKT_DATA_PRFT,
> +
> sizeof(AVProducerReferenceTime));
> + if (!prft)
> + return AVERROR(ENOMEM);
> + prft->wallclock = av_gettime();
> + prft->flags = 24;
It's pretty unclear what does this magic number mean.
The flags field in AVProducerReferenceTime is also undocumented.
--
Anton Khirnov
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