ifv: populate creation_time

Reviewed-by: NCarl Eugen Hoyos <ceffmpeg@gmail.com>
Signed-off-by: NPeter Ross <pross@xvid.org>

libavformat/ifv.c

@@ -90,7 +90,10 @@ static int parse_header(AVFormatContext *s)
     uint32_t aud_magic;
     uint32_t vid_magic;
 
-    avio_skip(s->pb, 0x5c);
+    avio_skip(s->pb, 0x34);
+    avpriv_dict_set_timestamp(&s->metadata, "creation_time", avio_rl32(s->pb) * 1000000LL);
+    avio_skip(s->pb, 0x24);
+
     ifv->width = avio_rl16(s->pb);
     ifv->height = avio_rl16(s->pb);