diff --git a/src/types.h b/src/types.h
index cbf5d3571..6b59d888f 100644
--- a/src/types.h
+++ b/src/types.h
@@ -98,6 +98,7 @@ typedef enum {
         CFHD,     ///< Cineform
         RG48,     ///< Cineform 16-bit RGB
         AV1,      ///< AOMedia Video 1
+        I420,     ///< planar YCbCr 4:2:0
         VIDEO_CODEC_COUNT, ///< count of known video codecs (including VIDEO_CODEC_NONE)
         VIDEO_CODEC_END = VIDEO_CODEC_COUNT
 } codec_t;
diff --git a/src/video_codec.c b/src/video_codec.c
index b61b13393..8e8ff9910 100644
--- a/src/video_codec.c
+++ b/src/video_codec.c
@@ -118,7 +118,7 @@ struct codec_info_t {
                                          ///< when display gets requestes compressed codec
                                          ///< (otherwise division by zero occurs).
         int bits_per_channel;            ///< Number of bits per color channel
-        int block_size;                  ///< Bytes per pixel block (pixelformats only)
+        int block_size;                  ///< Bytes per pixel block (packed pixelformats only)
         unsigned rgb:1;                  ///< Whether pixelformat is RGB
         unsigned opaque:1;               ///< If codec is opaque (= compressed)
         unsigned interframe:1;           ///< Indicates if compression is interframe
@@ -187,6 +187,8 @@ static const struct codec_info_t codec_info[] = {
                 to_fourcc('R','G','4','8'), 1, 6.0, 16, 3, TRUE, FALSE, FALSE, FALSE, "rg48"},
         [AV1] =  {"AV1", "AOMedia Video 1",
                 to_fourcc('a','v','0','1'), 0, 1.0, 8, 0, FALSE, TRUE, TRUE, FALSE, "av1"},
+        [I420] =  {"I420", "I420",
+                to_fourcc('I','4','2','0'), 2, 3.0/2.0, 8, 0, FALSE, FALSE, FALSE, FALSE, "i420"},
 };
 
 /**
diff --git a/src/video_display/dummy.cpp b/src/video_display/dummy.cpp
index 64ab233fa..00ef2b042 100644
--- a/src/video_display/dummy.cpp
+++ b/src/video_display/dummy.cpp
@@ -99,7 +99,7 @@ static int display_dummy_putf(void *state, struct video_frame * /* frame */, int
 
 static int display_dummy_get_property(void *, int property, void *val, size_t *len)
 {
-        codec_t codecs[] = {UYVY, YUYV, v210, R12L, RGBA, RGB, BGR};
+        codec_t codecs[] = {I420, UYVY, YUYV, v210, R12L, RGBA, RGB, BGR};
 
         switch (property) {
                 case DISPLAY_PROPERTY_CODECS: