diff --git a/nix/configuration/roles/media/files/cast_file_vaapi b/nix/configuration/roles/media/files/cast_file_vaapi
index d1b179f..ce8fd2d 100644
--- a/nix/configuration/roles/media/files/cast_file_vaapi
+++ b/nix/configuration/roles/media/files/cast_file_vaapi
@@ -123,11 +123,13 @@ function convert {
         if [ "$acceleration_type" == "software" ]; then
             args+=(-c:v h264)
             args+=(-profile:v high)
+            args+=(-vf format=yuv420p)
             args+=(-b:v "$VIDEO_BITRATE")
         elif [ "$acceleration_type" == "hardware" ]; then
             args+=(-vf 'format=nv12|vaapi,hwupload')
             args+=(-c:v h264_vulkan)
             args+=(-profile:v high)
+            args+=(-vf format=yuv420p)
             args+=(-b:v "$VIDEO_BITRATE")
         fi
     elif [ "$codec" == "av1" ]; then