Merge commit 'b21af32a'

* commit 'b21af32a':
  lavc: Prefer x264 over openh264 if both libraries are available

See: ddae03f6Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/allcodecs.c

@@ -544,13 +544,16 @@ void avcodec_register_all(void)
     REGISTER_ENCODER(LIBXVID,           libxvid);
     REGISTER_DECODER(LIBZVBI_TELETEXT,  libzvbi_teletext);
     REGISTER_ENCODER(LIBAACPLUS,        libaacplus);
-    REGISTER_ENCODER(LIBOPENH264,       libopenh264);
 
     /* text */
     REGISTER_DECODER(BINTEXT,           bintext);
     REGISTER_DECODER(XBIN,              xbin);
     REGISTER_DECODER(IDF,               idf);
 
+    /* external libraries, that shouldn't be used by default if one of the
+     * above is available */
+    REGISTER_ENCODER(LIBOPENH264,       libopenh264);
+
     /* parsers */
     REGISTER_PARSER(AAC,                aac);
     REGISTER_PARSER(AAC_LATM,           aac_latm);