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avformat/movenc: Make the packet check more tolerant

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Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-09-16 01:48:36 +02:00
parent 2834313933
commit 51000b9945
1 changed files with 15 additions and 14 deletions
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29
libavformat/movenc.c
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@ -4666,25 +4666,26 @@ 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) {
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
);
ref = trk->cluster[trk->entry - 1].dts;
} else if (trk->start_dts != AV_NOPTS_VALUE) {
ref = trk->start_dts + trk->track_duration;
} else
ref = pkt->dts; // Skip tests for the first packet
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
);
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 = 0;
pkt->pts = AV_NOPTS_VALUE;
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);