st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
int type = avio_r8(s->pb);
size--;
+
+ if (size < 0) {
+ ret = AVERROR_INVALIDDATA;
+ goto leave;
+ }
+
if (st->codecpar->codec_id == AV_CODEC_ID_H264 || st->codecpar->codec_id == AV_CODEC_ID_MPEG4) {
// sign extension
int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;