diff --git a/libarmbox/video.cpp b/libarmbox/video.cpp
index d1172b9..e148727 100644
--- a/libarmbox/video.cpp
+++ b/libarmbox/video.cpp
@@ -1238,6 +1238,28 @@ void cVideo::SetColorFormat(COLOR_FORMAT color_format)
 		proc_put("/proc/stb/video/hdmi_colorspace", p, strlen(p));
 }
 
+void cVideo::SetHdmiMode(HDMI_MODE hdmi_mode)
+{
+	const char *p = NULL;
+	switch (hdmi_mode)
+	{
+		case HDMI_MODE_AUTO:
+			p = "auto";
+			break;
+		case HDMI_MODE_BT2020NCL:
+			p = "bt2020ncl";
+			break;
+		case HDMI_MODE_BT2020CL:
+			p = "bt2020cl";
+			break;
+		case HDMI_MODE_BT709:
+			p = "bt709";
+			break;
+	}
+	if (p)
+		proc_put("/proc/stb/video/hdmi_colorimetry", p, strlen(p));
+}
+
 bool getvideo2(unsigned char *video, int xres, int yres)
 {
 	bool ret = false;
diff --git a/libarmbox/video_lib.h b/libarmbox/video_lib.h
index ca19814..c830427 100644
--- a/libarmbox/video_lib.h
+++ b/libarmbox/video_lib.h
@@ -36,6 +36,14 @@ typedef enum
 	COLORFORMAT_HDMI_YCBCR420
 } COLOR_FORMAT;
 
+typedef enum
+{
+	HDMI_MODE_AUTO,
+	HDMI_MODE_BT2020NCL,
+	HDMI_MODE_BT2020CL,
+	HDMI_MODE_BT709
+}HDMI_MODE;
+
 typedef enum
 {
 	VIDEO_FORMAT_MPEG2 = 0,
@@ -277,6 +285,7 @@ class cVideo
 		int StopVBI(void) { return 0; };
 		void SetDemux(cDemux *dmx);
 		void SetColorFormat(COLOR_FORMAT color_format);
+		void SetHdmiMode(HDMI_MODE hdmi_mode);
 		bool GetScreenImage(unsigned char *&data, int &xres, int &yres, bool get_video = true, bool get_osd = false, bool scale_to_video = false);
 };