Add gpu support to compress-video script

bin/compress-video

@@ -34,8 +34,8 @@ filename="${filename%.*}"
 
 use_crf=$2
 default_crf=25 # Programming vids have pretty crisp text @ crf 25.
-
 output_name="$3"
+use_cpu=$4
 
 function encode() {
     crf=$1
@@ -46,7 +46,14 @@ function encode() {
     fi
 
     printf "\n${YELLOW}${BOLD}Encoding '$filename.$extension' with CRF $crf | output: $output${NORMAL}\n"
-    ffmpeg -i "$filename.$extension" -c:v libx264 -crf $crf -preset veryfast -profile:v baseline -level 3.0 -strict -2 "$output"
+
+    if [[ $use_cpu -eq 1 ]]; then
+        ffmpeg -i "$filename.$extension" -c:v libx264 -crf $crf -preset veryfast -profile:v baseline -level 3.0 -strict -2 "$output"
+    else
+        # File will be slightly larger than CPU encoding, but it's much faster to transcode and doesn't max out the CPU cores.
+        ffmpeg -y -vsync 0 -hwaccel cuvid -c:v h264_cuvid -i "$filename.$extension" -c:a copy -c:v h264_nvenc \
+            -profile:v high -rc:v vbr_hq -cq:v $crf -b:v 5M -maxrate 5M -max_muxing_queue_size 9999 "$output"
+    fi
     printf "\n${GREEN}${BOLD}Done encoding '$filename.$extension' with CRF $crf${NORMAL}\n\n"
 }