avformat/riffenc: added possibility to set first to ninth audio language for...

avformat/riffenc: added possibility to set first to ninth audio language for RIFF taged files (e.g. avi files)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/riffenc.c

@@ -304,7 +304,8 @@ void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
 }
 
 static const char riff_tags[][5] = {
-    "IARL", "IART", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
+    "IARL", "IART", "IAS1", "IAS2", "IAS3", "IAS4", "IAS5", "IAS6", "IAS7",
+    "IAS8", "IAS9", "ICMS", "ICMT", "ICOP", "ICRD", "ICRP", "IDIM", "IDPI",
     "IENG", "IGNR", "IKEY", "ILGT", "ILNG", "IMED", "INAM", "IPLT", "IPRD",
     "IPRT", "ITRK", "ISBJ", "ISFT", "ISHP", "ISMP", "ISRC", "ISRF", "ITCH",
     { 0 }