static int check_pkt(AVFormatContext *s, AVPacket *pkt) { MOVMuxContext *mov = s->priv_data; MOVTrack *trk = &mov->tracks[pkt->stream_index]; int64_t ref; uint64_t duration; if (trk->entry) { ref = trk->cluster[trk->entry - 1].dts; } else if ( trk->start_dts != AV_NOPTS_VALUE && !trk->frag_discont) { ref = trk->start_dts + trk->track_duration; } else ref = pkt->dts; // Skip tests for the first packet duration = pkt->dts - ref; if (pkt->dts < ref || duration >= INT_MAX) { av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n", duration, pkt->dts ); pkt->dts = ref + 1; pkt->pts = AV_NOPTS_VALUE; if (pkt->duration < 0 || pkt->duration > INT_MAX) { av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" is invalid\n", pkt->duration); return AVERROR(EINVAL); return 0;