static int check_pkt(AVFormatContext *s, AVPacket *pkt) { MOVMuxContext *mov = s->priv_data; MOVTrack *trk = &mov->tracks[pkt->stream_index]; if (trk->entry) { int64_t duration = pkt->dts - trk->cluster[trk->entry - 1].dts; if (duration < 0 || 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 = trk->cluster[trk->entry - 1].dts + 1; pkt->pts = AV_NOPTS_VALUE; } } else if (pkt->dts <= INT_MIN || pkt->dts >= INT_MAX) { av_log(s, AV_LOG_ERROR, "Application provided initial timestamp: %"PRId64" is out of range for mov/mp4 format\n", pkt->dts ); pkt->dts = 0; 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; }