Fix null size variable bug with determining the default bitrate.

files/scripts/compress_video.sh

@@ -102,25 +102,38 @@ if [[ -z "$input" ]]; then
 	input="."
 fi
 
+if [[ -z $size ]]; then
+	size="720"
+fi
+typeset -i size_int
+size_int="$size"
+
+# Ensure the filenames sort properly between 3 and 4 digit resolutions.
+while (( ${#size} < 4 )); do
+    size="0$size"
+done
+compress_tags="$size"
+size="-filter:v scale=-2:$size"
+
 if [[ -z "$video_bitrate" ]]; then
 	# Based roughly on the 2.5 step iteration used for 720 and 1080.
-	if (( $size >= 2160 )); then
+	if (( size_int >= 2160 )); then
 		video_bitrate="30M"
-	elif (( $size >= 1440 )); then
+	elif (( size_int >= 1440 )); then
 		video_bitrate="12M"
-	elif (( $size >= 1080 )); then
+	elif (( size_int >= 1080 )); then
 		video_bitrate="5M"
-	elif (( $size >= 720 )); then
+	elif (( size_int >= 720 )); then
 		video_bitrate="2000k"
-	elif (( $size >= 480 )); then
+	elif (( size_int >= 480 )); then
 		video_bitrate="750k"
-	elif (( $size >= 360 )); then
+	elif (( size_int >= 360 )); then
 		video_bitrate="250k"
 	else
 		video_bitrate="100k"
 	fi
 fi
-compress_tags="$video_bitrate"
+compress_tags="$compress_tags-$video_bitrate"
 video_bitrate="-b:v $video_bitrate -minrate 0 -maxrate $video_bitrate -bufsize $video_bitrate"
 
 if [[ -z "$audio_bitrate" ]]; then
@@ -145,15 +158,6 @@ else
 	time_command="$time_command -p"
 fi
 
-if [[ -z $size ]]; then
-	size="720"
-fi
-while (( ${#size} < 4 )); do
-    size="0$size"
-done
-compress_tags="$size-$compress_tags"
-size="-filter:v scale=-2:$size"
-
 ## Main ##
 
 if [[ "$verbose" == "Y" ]]; then