Merge commit '29d61d73b1cbf0dcd1f79bc49c7df01b0a377c85' into release/2.2

* commit '29d61d73b1cbf0dcd1f79bc49c7df01b0a377c85':
  movenc: Allow override of major brand in ftyp atom

Conflicts:
	libavformat/movenc.c

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

libavformat/movenc.h

@@ -173,6 +173,8 @@ typedef struct MOVMuxContext {
 
     int reserved_moov_size; ///< 0 for disabled, -1 for automatic, size otherwise
     int64_t reserved_moov_pos;
+
+    char *major_brand;
 } MOVMuxContext;
 
 #define FF_MOV_FLAG_RTP_HINT 1