diff --git a/libmpcodecs/vd_ffmpeg.c b/libmpcodecs/vd_ffmpeg.c
index 61d08a12db..cd1e635a0c 100644
--- a/libmpcodecs/vd_ffmpeg.c
+++ b/libmpcodecs/vd_ffmpeg.c
@@ -251,6 +251,12 @@ static int init(sh_video_t *sh){
 	avctx->extradata = malloc(avctx->extradata_size);
 	memcpy(avctx->extradata, sh->bih+1, avctx->extradata_size);
     }
+    if (sh->ImageDesc &&
+	 sh->format == mmioFOURCC('S','V','Q','3')){
+	avctx->extradata_size = *(int*)sh->ImageDesc;
+	avctx->extradata = malloc(avctx->extradata_size);
+	memcpy(avctx->extradata, ((int*)sh->ImageDesc)+1, avctx->extradata_size);
+    }
     
     if(sh->bih)
 	avctx->bits_per_sample= sh->bih->biBitCount;