From 40275ad867274f4ff94150302725eb419fda7c86 Mon Sep 17 00:00:00 2001
From: Arkadiusz Wieczorek <kontakt@arkadiusz-wieczorek.pl>
Date: Wed, 13 Jul 2022 14:00:32 +0200
Subject: [PATCH] Add mac support

---
 change-length-video-HWACCEL.sh | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/change-length-video-HWACCEL.sh b/change-length-video-HWACCEL.sh
index 66a9e0c..10016e7 100755
--- a/change-length-video-HWACCEL.sh
+++ b/change-length-video-HWACCEL.sh
@@ -1,15 +1,14 @@
 #!/bin/bash -x
 
-# usage: change-length.sh 1.007 input.mp4 output.mp4 [--fast]
-#       ^output.mp4 will be be 7% longer
-#       --fast is faster, but slightly more risky
+# usage: change-length.sh 1.007 input.mp4 output.mp4 [0] [--fast]
        
 set -euo pipefail
 
 RATIO=$1;
 IN_FILE=$2;
 OUT_FILE=$3;
-MODE=${4-"--slow"};
+IS_MAC=${4-"0"};
+MODE=${5-"--slow"};
 BITRATE=$(ffmpeg -i "$IN_FILE" 2>&1 | grep bitrate | awk -F", " '{print $3}' | sed 's/bitrate: //' | sed 's/ //' | sed 's/b\/s//' || echo "");
 
 echo ratio set to "$RATIO"
@@ -51,8 +50,11 @@ slow () {
 
   echo "running with filter $FILTER";
 
-  ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -vaapi_device /dev/dri/renderD128 -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_vaapi "$OUT_FILE";
-#   ffmpeg -i "$IN_FILE" -filter_complex "$FILTER" "${OPTS[@]}" "$OUT_FILE";
+  if [ "$IS_MAC" -eq 1 ]; then
+    ffmpeg -c:v h264_videotoolbox -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_vaapi "$OUT_FILE";  
+  else
+    ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -vaapi_device /dev/dri/renderD128 -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_vaapi "$OUT_FILE";
+  fi;
 }
 
 fast (){