av_md5_update(mkv->md5_ctx, pkt->data, FFMIN(200, pkt->size));
}
+ if (codec->codec_id == CODEC_ID_H264 &&
+ codec->extradata_size > 0 && AV_RB32(codec->extradata) == 0x00000001) {
+ /* from x264 or from bytestream h264 */
+ /* nal reformating needed */
+ int ret = avc_parse_nal_units(pkt->data, &pkt->data, &pkt->size);
+ if (ret < 0)
+ return ret;
+ assert(pkt->size);
+ }
+
if (codec->codec_type != CODEC_TYPE_SUBTITLE) {
mkv_write_block(s, MATROSKA_ID_SIMPLEBLOCK, pkt, keyframe << 7);
} else {