diff --git a/dve b/dve
index 9ef449f..4baf309 100755
--- a/dve
+++ b/dve
@@ -5,7 +5,7 @@ set -e
 # defaults for all configuration values
 ENC="ffmpeg"
 CRF=26
-OPTS="-c:v libx265 -preset fast -x265-params crf=${CRF}:aq-mode=3 -c:a libvorbis -aq 5"
+OPTS="-c:v libx265 -pix_fmt yuv420p10le -preset fast -x265-params crf=${CRF}:aq-mode=3 -c:a libvorbis -aq 5"
 # This is to split out and copy attachment streams, like subtitles
 # and fonts, so they only get copied once.
 DATA_OPTS="-map 0 -c:s copy -c:t copy -c:d copy -vn -an"
@@ -69,7 +69,7 @@ while getopts “hl:t:o:s:q:v” OPTION; do
     ;;
     q)
     CRF="$OPTARG"
-    OPTS="-c:v libx265 -preset fast -x265-params crf=${CRF}:aq-mode=3 -c:a libvorbis -aq 5"
+    OPTS="-c:v libx265 -pix_fmt yuv420p10le -preset fast -x265-params crf=${CRF}:aq-mode=3 -c:a libvorbis -aq 5"
     ;;
     o)
     OPTS="$OPTARG"