matroskaenc: Don't set language to empty string, use "und"

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · 73b7a360d8
parent 729479a199
commit 73b7a360d8
1 changed files with 1 additions and 1 deletions
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@ -737,7 +737,7 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
        put_ebml_string(pb, MATROSKA_ID_TRACKNAME, tag->value);
    tag = av_dict_get(st->metadata, "language", NULL, 0);
    if (mkv->mode != MODE_WEBM || codec->codec_id != AV_CODEC_ID_WEBVTT) {
-        put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag ? tag->value:"und");
+        put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag && tag->value ? tag->value:"und");
    } else if (tag && tag->value) {
        put_ebml_string(pb, MATROSKA_ID_TRACKLANGUAGE, tag->value);
    }