diff --git a/pack-preset b/pack-preset
index 08db3a5..ed290ea 100755
--- a/pack-preset
+++ b/pack-preset
@@ -1 +1,2 @@
-pack-set --color-temperature=6800 --peak=600 --vibrance=0.2 "$@"
+#pack-set --color-temperature=6800 --peak=600 --vibrance=0.2 "$@"
+pack-set --color-temperature=6800 --peak=800 --vibrance=0.2 "$@"
diff --git a/pack-vid b/pack-vid
index edfcc5d..47e7515 100755
--- a/pack-vid
+++ b/pack-vid
@@ -20,12 +20,15 @@ $options = [
     'crop' => false,
     'letterbox' => false,
     'no-audio' => false,
+    'audio-bitrate' => 96000,
+    'audio-channels' => 2,
     'exposure' => '0', // stops
     'peak' => '1000', // '10000' is max
     'preset' => 'medium',
     'fps' => '60000/1001',
     'size' => $maxBytes,
     'quality' => 1.0,
+    'bitrate' => 0,
     'hdr' => false,
     'dither' => false,
     'width' => false,
@@ -62,8 +65,9 @@ if ( count ( $args ) < 2 ) {
         "  --peak=n         set HDR peak nits\n" .
         "  --preset=key     set h.264 encoding preset\n" .
         "  --fps=n          frame rate limit\n" .
-        "  --size=n         target file size in bytes (default 3.5M)\n" .
-        "  --quality=n      fraction of base bitrate to break on (deafult 0.75)\n" .
+        "  --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" .
         "  --dither         enable dithering in 8-bit downconversion\n" .
         "  --width=n        override frame width in pixels\n" .
@@ -195,14 +199,18 @@ function convert( $src, $dest, $options ) {
     }
 
     $bitrate = floor( $maxBits / $duration );
+    if ( $options['bitrate'] ) {
+        $bitrate = sizify( $options['bitrate'] );
+    }
 
 
     if ( $options[ 'no-audio' ] || count( $audioTracks ) == 0 ) {
         $audio = [ '-an' ];
     } else {
-        $audioBitrate = 96 * 1000;
+        $audioBitrate = $options[ 'audio-bitrate' ];
+        $audioChannels = $options[ 'audio-channels' ];
         $audio = [
-            '-ac', 2,
+            '-ac', $audioChannels,
             '-b:a', $audioBitrate,
         ];
         $bitrate -= $audioBitrate;