diff --git a/functions/av1crf.fish b/functions/av1crf.fish
new file mode 100644
index 0000000..7f37609
--- /dev/null
+++ b/functions/av1crf.fish
@@ -0,0 +1,20 @@
+function av1crf
+    if test (count $argv) -lt 1
+        echo "Usage: av1smart <input-file> [preset] [min-vmaf]"
+        return 1
+    end
+
+    set input "$argv[1]"
+    set preset (or $argv[2] 6)
+    set min_vmaf (or $argv[3] 95)
+
+    echo "Running ab-av1 crf-search..."
+    echo "Input:     $input"
+    echo "Preset:    $preset"
+    echo "Min VMAF:  $min_vmaf"
+
+    ab-av1 crf-search \
+        -i "$input" \
+        --preset $preset \
+        --min-vmaf $min_vmaf
+end