diff --git a/pack-vid b/pack-vid
index 8a9f391..7326546 100755
--- a/pack-vid
+++ b/pack-vid
@@ -18,9 +18,9 @@ $maxBytes = $maxBytes * 15 / 16; // leave some headroom
 $options = [
     'crop' => false,
     'no-audio' => false,
-    'exposure' => '-0.5', // half stop down
+    'exposure' => '-1', // stops
     'peak' => '1000', // '10000' is max
-    'fps' => '60',
+    'fps' => '60000/1001',
     'size' => $maxBytes,
     'quality' => 1.0,
 ];
@@ -168,7 +168,8 @@ function convert( $src, $dest, $options ) {
     } else {
         $frameWidth = 1920;
         $frameHeight = 1080;
-        $bitrate = $base * 4;
+        // Cap the bitrate rather than making larger encodings.
+        $bitrate = min( $bitrate, $base * 8 );
     }
 
     $aspect = $width / $height;
@@ -199,12 +200,13 @@ function convert( $src, $dest, $options ) {
 
     $filters = [ "scale=w=$scaleWidth:h=$scaleHeight" ];
     if ( $hdr ) {
-        $filters[] = "zscale=t=linear:p=bt2020";
+        $filters[] = "zscale=t=linear";
         if ( $exposure ) {
             $filters[] = "exposure=$exposure";
         }
         $filters[] = "tonemap=hable:peak=$peak";
         $filters[] = "zscale=t=bt709:p=bt709:m=bt709:r=full";
+        $filters[] = "vibrance=0.20";
     }
     $filters[] = "format=yuv420p";
     if ( $crop ) {
@@ -220,6 +222,7 @@ function convert( $src, $dest, $options ) {
 
     // $preset = 'veryslow'; // annoying at higher resolutions
     $preset = 'slow';
+    //$preset = 'fast';
 
     $tempPrefix = 'pack-vid-passlog' . rand(0,1 << 31);
     $passlog = tempnam( '.', $tempPrefix );
@@ -227,7 +230,8 @@ function convert( $src, $dest, $options ) {
         array_merge( [
             '-i', $src,
             '-f', 'mp4',
-            '-fpsmax', $fps,
+            //'-fpsmax', $fps,
+            '-r', $fps,
             '-vf', $vf,
             '-c:v', 'libx264',
             '-b:v', $bitrate,
@@ -243,7 +247,8 @@ function convert( $src, $dest, $options ) {
         array_merge( [
             '-i', $src,
             '-vf', $vf,
-            '-fpsmax', $fps,
+            //'-fpsmax', $fps,
+            '-r', $fps,
             '-c:v', 'libx264',
             '-b:v', $bitrate,
             '-preset', $preset,