extern const CodecTags ff_mkv_codec_tags[];
extern const CodecTags ff_webm_codec_tags[];
-extern const CodecMime ff_mkv_mime_tags[];
-extern const CodecMime ff_mkv_image_mime_tags[];
extern const AVMetadataConv ff_mkv_metadata_conv[];
extern const char * const ff_matroska_video_stereo_mode[MATROSKA_VIDEO_STEREOMODE_TYPE_NB];
extern const char * const ff_matroska_video_stereo_plane[MATROSKA_VIDEO_STEREO_PLANE_COUNT];