diff --git a/libavformat/isom.c b/libavformat/isom.c
index 9b32b7dc57..f70f982bb1 100644
--- a/libavformat/isom.c
+++ b/libavformat/isom.c
@@ -173,6 +173,7 @@ const AVCodecTag ff_codec_movvideo_tags[] = {
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
+    { AV_CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '1') }, /* XDCAM HD422 720p30 CBR */
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '4') }, /* XDCAM HD422 720p24 CBR */
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '5') }, /* XDCAM HD422 720p25 CBR */
     { AV_CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */