[FFmpeg-devel] [PATCH] added possibility to set first to ninth audio language for RIFF taged files (e.g. avi files)

floriandiemer at gmx.net floriandiemer at gmx.net
Sun Oct 2 17:43:10 EEST 2016

According to this page 
it is possible
to add language information ("IAS1" (first language) to "IAS9" (ninth 
language)) to RIFF tagged files (as RIFF Info Tags).
Programs such as VLC media player or MediaInfo can properly read and 
display this information. Allowing to set this tags
with the -metadata option while encoding, would simplify the process.
libavformat/riffenc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/riffenc.c b/libavformat/riffenc.c
index 36e6ac7..4b25c06 100644
--- a/libavformat/riffenc.c
+++ b/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",
{ 0 }

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