diff --git a/shell/bash/avt/README.md b/shell/bash/avt/README.md
index b850b01..0ae6522 100644
--- a/shell/bash/avt/README.md
+++ b/shell/bash/avt/README.md
@@ -46,4 +46,4 @@
 # Requirements
 
 This assumes you use X11, PipeWire and pipewire-pulse.  
-You also need a pretty fast disk and a lot of free space to record with this tool with the default settings. Consider increasing `rec_crf` if you don't have those.
+You also need a pretty fast disk and a lot of free space to record with this tool with the default settings. Consider increasing [`rec_crf`](https://trac.ffmpeg.org/wiki/Encode/H.264#crf) or choosing a slower [`rec_preset`](https://trac.ffmpeg.org/wiki/Encode/H.264#Preset) if you don't have those.
diff --git a/shell/bash/avt/avt b/shell/bash/avt/avt
index 2f8851e..87f92ae 100755
--- a/shell/bash/avt/avt
+++ b/shell/bash/avt/avt
@@ -22,6 +22,8 @@ rec_out: set output file (default: $HOME/Desktop/$(date +%F_%H-%M-%S).mkv)
 rec_fps: set framerate (default: 60)
 rec_res: set resolution (default: 1920x1080)
 rec_out: set output file (default: $HOME/Desktop/$(date +%F_%H-%M-%S).mkv)
+rec_preset: set preset (default: ultrafast)
+rec_vrate: replace -crf options
 rec_crf: set crf, use 0 for lossless (default: 10)
 rec_adev: space separated pulseaudio source devices (default: default and first running monitor)
 rec_ar: set audio samplerate (default: 192000)
@@ -81,7 +83,7 @@ foreach (@sinks) {
 		$pulse_inputs \
 		-filter_complex "$audio_filter" \
 		-c:a pcm_s16le -ar "${rec_ar:-192000}" \
-		-c:v libx264rgb -x264opts opencl -profile:v high444 -crf "${rec_crf:-4}" -tune film -preset ultrafast -r 60 \
+		-c:v libx264rgb ${avt_cl+-x264opts opencl} -profile:v high444 -preset "${rec_preset:-ultrafast}" ${rec_vrate:--crf "${rec_crf:-10}"} -tune zerolatency -r 60 \
 		-map 0:v $audio_maps -map '[merged]:a' \
 		"$OUTPUTFILE"
 
@@ -101,7 +103,7 @@ normalize() {
 	ffmpeg -y \
 		${nvid_cl+-hwaccel opencl} -i "$1" \
 		${nvid_cl+-init_hw_device opencl=ocl -filter_hw_device ocl} \
-		-c:v libx264${nvid_rgb+rgb} ${nvid_cl+-x264opts opencl} -preset "${nvid_preset:-veryslow}" ${nvid_vrate:--crf "${nvid_crf:-21}"} \
+		-c:v libx264${nvid_rgb+rgb} ${avt_cl+-x264opts opencl} -preset "${nvid_preset:-veryslow}" ${nvid_vrate:--crf "${nvid_crf:-21}"} \
 		-pix_fmt "${nvid_pixfmt:-yuv420p}" -profile:v "${nvid_profile:-high}" \
 		-c:a "${nvid_ac:-aac}" -b:a "${nvid_ba:-160k}" -ar "${nvid_ar:-48000}" \
 		-map 0 \