Merge commit '708e84cd'

* commit '708e84cd':
  mov: Avoid memcmp of uninitialised data
Merged-by: James Almer <jamrial@gmail.com>

libavformat/mov.c

@@ -1890,14 +1890,14 @@ static void mov_parse_stsd_video(MOVContext *c, AVIOContext *pb,
         av_dict_set(&st->metadata, "encoder", codec_name, 0);
 
     /* codec_tag YV12 triggers an UV swap in rawdec.c */
-    if (!memcmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
+    if (!strncmp(codec_name, "Planar Y'CbCr 8-bit 4:2:0", 25)) {
         st->codecpar->codec_tag = MKTAG('I', '4', '2', '0');
         st->codecpar->width &= ~1;
         st->codecpar->height &= ~1;
     }
     /* Flash Media Server uses tag H.263 with Sorenson Spark */
     if (st->codecpar->codec_tag == MKTAG('H','2','6','3') &&
-        !memcmp(codec_name, "Sorenson H263", 13))
+        !strncmp(codec_name, "Sorenson H263", 13))
         st->codecpar->codec_id = AV_CODEC_ID_FLV1;
 
     st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* depth */