diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index 17eb245332..1f9fa149e1 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -688,6 +688,8 @@ static int avi_read_header(AVFormatContext *s)
                     /* 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) {