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-rw-r--r--libavformat/matroskaenc.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 6f2957c1c6..03d5326a59 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -1192,8 +1192,10 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
av_log(s, AV_LOG_ERROR, "Overflow in display width\n");
return AVERROR(EINVAL);
}
- put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
- put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
+ if (d_width != par->width || display_width_div != 1 || display_height_div != 1) {
+ put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , d_width / display_width_div);
+ put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);
+ }
} else if (display_width_div != 1 || display_height_div != 1) {
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYWIDTH , par->width / display_width_div);
put_ebml_uint(pb, MATROSKA_ID_VIDEODISPLAYHEIGHT, par->height / display_height_div);