| Index: source/patched-ffmpeg-mt/libavformat/matroskaenc.c | 
| =================================================================== | 
| --- source/patched-ffmpeg-mt/libavformat/matroskaenc.c	(revision 65184) | 
| +++ source/patched-ffmpeg-mt/libavformat/matroskaenc.c	(working copy) | 
| @@ -752,6 +752,8 @@ | 
| ebml_master tags = {0}; | 
| int i, ret; | 
|  | 
| +    ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); | 
| + | 
| if (av_metadata_get(s->metadata, "", NULL, AV_METADATA_IGNORE_SUFFIX)) { | 
| ret = mkv_write_tag(s, s->metadata, 0, 0, &tags); | 
| if (ret < 0) return ret; | 
| @@ -1186,7 +1188,6 @@ | 
| .flags = AVFMT_GLOBALHEADER | AVFMT_VARIABLE_FPS, | 
| .codec_tag = (const AVCodecTag* const []){ff_codec_bmp_tags, ff_codec_wav_tags, 0}, | 
| .subtitle_codec = CODEC_ID_TEXT, | 
| -    .metadata_conv = ff_mkv_metadata_conv, | 
| }; | 
| #endif | 
|  | 
| @@ -1220,6 +1221,5 @@ | 
| mkv_write_trailer, | 
| .flags = AVFMT_GLOBALHEADER, | 
| .codec_tag = (const AVCodecTag* const []){ff_codec_wav_tags, 0}, | 
| -    .metadata_conv = ff_mkv_metadata_conv, | 
| }; | 
| #endif | 
|  |