Set maximum keyframe interval to 300

This allows the output to be passed to eval in a script (or something
similar).

av1_presets.yml

@@ -22,6 +22,14 @@ stereo:
   mf: "1"
   dnl: "5"
   arnr_strength: "1"
+mono:
+  alayout: "mono"
+  ba: "64k"
+  cpu: "3"
+  crf: "24"
+  mf: "1"
+  dnl: "5"
+  arnr_strength: "1"
 anime:
   alayout: "stereo"
   ba: "128k"

hav1w.py

@@ -1,12 +1,13 @@
 import argparse
 import os
 import pathlib
+import shlex
 import subprocess
 
 import yaml
 
 # Hannes' AV1 wrapper script
-# Version 2.0.0
+# Version 2.0.2
 
 # This is a good guide for optimizing AV1 parameters with the AOM reference encoder:
 # https://www.reddit.com/r/AV1/comments/t59j32/encoder_tuning_part_4_a_2nd_generation_guide_to/
@@ -56,6 +57,8 @@ cmd += ["-crf", preset["crf"], "-b:v", "0"]
 
 # Set minimum keyframe interval to 12 to prevent placing too many keyframes... just in case
 cmd += ["-keyint_min", "12"]
+# Set maximum keyframe interval to 300 for an improved decoding/seeking performance
+cmd += ["-g", "300"]
 
 # Set lookahead to 48 frames
 # Reddit post says it's worth it...
@@ -101,7 +104,7 @@ cmd += ["-b:a", preset["ba"], "-af", f"aformat=channel_layouts={preset['alayout'
 cmd += [args.output]
 
 if args.dry:
-    print(" ".join(cmd))
+    print(" ".join(list(map(lambda x:shlex.quote(x), cmd))))
     exit(0)
 
 p = subprocess.run(cmd)