diff --git a/pack-set-hdr b/pack-set-hdr
new file mode 100755
index 0000000..6d168e6
--- /dev/null
+++ b/pack-set-hdr
@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+OPTS=""
+
+for INFILE in "$@"
+do
+    if [[ "$1" =~ ^--.* ]]
+    then
+        echo "OPTION: $1"
+        OPTS="$OPTS $1"
+        shift
+    else
+        echo "FILE: $INFILE"
+
+        COMMON="--vcodec=libsvtav1 --hdr"
+        SPEED_SMALL="4"
+        SPEED_LARGE="4"
+
+        SMALL="$COMMON --size=4m --quality=0.5 --preset=$SPEED_SMALL"
+        MED="$COMMON --size=10m --quality=0.75 --preset=$SPEED_SMALL"
+        TEN80="$COMMON --bitrate=4000000 --width=1920 --height=1080 --preset=$SPEED_LARGE"
+
+        pack-vid $SMALL $OPTS "$INFILE" "${INFILE%.mp4}-hdr-av1-small.webm"
+        pack-vid $MED $OPTS "$INFILE" "${INFILE%.mp4}-hdr-av1-med.webm"
+        pack-vid $TEN80 $OPTS "$INFILE" "${INFILE%.mp4}-hdr-av1-1080p.webm"
+    fi
+done
diff --git a/pack-set-vp9 b/pack-set-vp9
new file mode 100755
index 0000000..cfbdf9e
--- /dev/null
+++ b/pack-set-vp9
@@ -0,0 +1,28 @@
+#!/bin/bash
+set -e
+
+OPTS=""
+
+for INFILE in "$@"
+do
+    if [[ "$1" =~ ^--.* ]]
+    then
+        echo "OPTION: $1"
+        OPTS="$OPTS $1"
+        shift
+    else
+        echo "FILE: $INFILE"
+
+        COMMON="--vcodec=libvpx-vp9 --hdr"
+        SPEED_SMALL="2"
+        SPEED_LARGE="2"
+
+        SMALL="$COMMON --size=4m --quality=0.5 --speed=$SPEED_SMALL"
+        MED="$COMMON --size=10m --quality=0.75 --speed=$SPEED_SMALL"
+        TEN80="$COMMON --bitrate=4000000 --width=1920 --height=1080 --preset=$SPEED_LARGE"
+
+        pack-vid $SMALL $OPTS "$INFILE" "${INFILE%.mp4}-hdr-vp9-small.webm"
+        pack-vid $MED $OPTS "$INFILE" "${INFILE%.mp4}-hdr-vp9-med.webm"
+        pack-vid $TEN80 $OPTS "$INFILE" "${INFILE%.mp4}-hdr-vp9-1080p.webm"
+    fi
+done
diff --git a/pack-vid b/pack-vid
index 7ca7fa8..d3634c1 100755
--- a/pack-vid
+++ b/pack-vid
@@ -30,6 +30,7 @@ $options = [
     'size' => $maxBytes,
     'quality' => 1.0,
     'bitrate' => 0,
+    'hdr-input' => false,
     'hdr' => false,
     'dither' => false,
     'width' => false,
@@ -71,7 +72,8 @@ if ( count ( $args ) < 2 ) {
         "  --bitrate=n      target bitrate (exclusive with --size)\n" .
         "  --size=n         target file size in bytes (exclusive with --bitrate)\n" .
         "  --quality=n      fraction of base bitrate to break on (deafult 1.0)\n" .
-        "  --hdr            force HDR input processing on\n" .
+        "  --hdr-input      force HDR input processing on\n" .
+        "  --hdr            force HDR output on (normally SDR output)\n" .
         "  --dither         enable dithering in 8-bit downconversion\n" .
         "  --width=n        override frame width in pixels\n" .
         "  --height=n       override frame height in pixels\n" .
@@ -190,9 +192,10 @@ function convert( $src, $dest, $options ) {
         $cropLeft = intval( $options['crop-left'] );
     }
     // @fixme some files are missing this? trims from qt?
-    //$hdr = $track->color_primaries === 'bt2020' || $options['hdr'];
+    //$hdrInput = $track->color_primaries === 'bt2020' || $options['hdr-input'];
     // pix_fmt: "yuv420p10le"
-    $hdr = substr( $track->pix_fmt, -5 ) === 'p10le' || $options['hdr'];
+    $hdrInput = substr( $track->pix_fmt, -5 ) === 'p10le' || $options['hdr-input'];
+    $hdr = $hdrInput && $options['hdr'];
     if ( $options['keyframe-int'] ) {
         $keyframeInt = intval( $options['keyframe-int'] );
     } else {
@@ -317,6 +320,8 @@ function convert( $src, $dest, $options ) {
     }
     $filters[] = "scale=w=$scaleWidth:h=$scaleHeight";
     if ( $hdr ) {
+        $filters[] = "format=yuv420p10le";
+    } elseif ( $hdrInput ) {
         $filters[] = "zscale=t=linear:p=709:m=709";
         if ( $exposure ) {
             $filters[] = "exposure=$exposure";
@@ -335,8 +340,9 @@ function convert( $src, $dest, $options ) {
         if ( $vibrance ) {
             $filters[] = "vibrance=$vibrance";
         }
+    } else {
+        $filters[] = "format=yuv420p";
     }
-    $filters[] = "format=yuv420p";
     if ( $crop ) {
         $filters[] = "crop=w=$frameWidth:h=$frameHeight";
     } elseif ( $letterbox ) {