[FFmpeg-devel] [PATCH] matroskaenc: Implement support for ALAC

[Moritz Bunkus]

Implement support for muxing ALAC into Matroska. Trivial skipping of
12 bytes of extra data produced by FFMPEG's encoder is required,
nothing more.

Kind regards,
mosu

---
 libavformat/matroskaenc.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index f5fdaae..30885a1 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -475,6 +475,8 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo
             ret = ff_flac_write_header(dyn_cp, codec, 1);
         else if (codec->codec_id == CODEC_ID_H264)
             ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size);
+        else if (codec->codec_id == CODEC_ID_ALAC && (12 < codec->extradata_size))
+            ret = ff_isom_write_avcc(dyn_cp, codec->extradata + 12, codec->extradata_size - 12);
         else if (codec->extradata_size)
             avio_write(dyn_cp, codec->extradata, codec->extradata_size);
     } else if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
-- 
1.7.5.4