fix msmpeg4 seek

Originally committed as revision 68 to svn://svn.ffmpeg.org/ffmpeg/trunk

fix msmpeg4 seek
Originally committed as revision 68 to svn://svn.ffmpeg.org/ffmpeg/trunk
4af5e4ef · Fabrice Bellard · 0cfa9713 · 4af5e4ef
Commit 4af5e4ef authored Aug 11, 2001 by Fabrice Bellard
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h263dec.c libavcodec/h263dec.c +4 -0

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--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -107,6 +107,10 @@ static int h263_decode_frame(AVCodecContext *avctx,
    if (ret < 0)
        return -1;

+    /* make sure we start with an I-Frame */
+    if (!s->slice_height && (s->pict_type != I_TYPE))
+        return -1;
+
    MPV_frame_start(s);

 #ifdef DEBUG