isom: only write the size if its non zero in mov_rewrite_dvd_sub_extradata()
authorMichael Niedermayer <michaelni@gmx.at>
Thu, 20 Mar 2014 07:05:35 +0000 (07:05 +0000)
committerVittorio Giovara <vittorio.giovara@gmail.com>
Sun, 30 Mar 2014 23:08:12 +0000 (01:08 +0200)
Sample-Id: NeroRecodeSample.mp4

libavformat/isom.c

index 3f420e7..cade775 100644 (file)
@@ -446,8 +446,10 @@ static int mov_rewrite_dvd_sub_extradata(AVStream *st)
     if (st->codec->extradata_size != 64)
         return 0;
 
-    snprintf(buf, sizeof(buf), "size: %dx%d\npalette: ",
-             st->codec->width, st->codec->height);
+    if (st->codec->width > 0 &&  st->codec->height > 0)
+        snprintf(buf, sizeof(buf), "size: %dx%d\n",
+                 st->codec->width, st->codec->height);
+    av_strlcat(buf, "palette: ", sizeof(buf));
 
     for (i = 0; i < 16; i++) {
         uint32_t yuv = AV_RB32(src + i * 4);