/* This is needed to get the pict type which is necessary
* for generating correct pts. */
st->need_parsing = AVSTREAM_PARSE_HEADERS;
+ if (st->codec->codec_tag == MKTAG('V', 'S', 'S', 'H'))
+ st->need_parsing = AVSTREAM_PARSE_FULL;
if (st->codec->codec_tag == 0 && st->codec->height > 0 &&
st->codec->extradata_size < 1U << 30) {