diff --git a/libavformat/riff.c b/libavformat/riff.c
index cb8634ca78..7c5790b631 100644
--- a/libavformat/riff.c
+++ b/libavformat/riff.c
@@ -46,6 +46,7 @@ const AVCodecTag ff_codec_bmp_tags[] = {
     { AV_CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },
     { AV_CODEC_ID_H263,         MKTAG('Z', 'y', 'G', 'o') },
     { AV_CODEC_ID_H263,         MKTAG('M', '2', '6', '3') },
+    { AV_CODEC_ID_H263,         MKTAG('l', 's', 'v', 'm') },
     { AV_CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },
     { AV_CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* Intel H.263 */
     { AV_CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },