diff --git a/av/video-compress b/av/video-compress
index a0a2ffc..cec380a 100755
--- a/av/video-compress
+++ b/av/video-compress
@@ -180,7 +180,7 @@ if [[ ! -e "$inputfile" ]]; then echo "Inputfile '$inputfile' missing"; exit 1;
 ffprobe -hide_banner "$inputfile"
 
 while true; do
-    command="ffmpeg-parser -i \"$inputfile\" $resize $compression $audio -movflags faststart $overwrite \"$outputfile\""
+    command="ffmpeg-parser -i \"$inputfile\" -pix_fmt yuv420p $resize $compression $audio -movflags faststart $overwrite \"$outputfile\""
     if [[ $FORCE -eq 1 ]]; then
         choice=EXECUTE
     else