Update video compression scripts

bin/compress-video

@@ -23,21 +23,20 @@ else
     NORMAL=""
 fi
 
-if [[ $1 == "" || $2 == "" ]]; then
-    printf "${BOLD}${RED}Usage: $0 <use-gpu (1|0)> <filename> <optional output name>${NORMAL}\n"
+use_gpu=$1
+filename=$(basename -- "$2")
+output_name="$3"
+
+if [[ $use_gpu == "" || $2 == "" || $output_name == "" ]]; then
+    printf "${BOLD}${RED}Usage: $0 <use-gpu (1|0)> <filename> <output name>${NORMAL}\n"
     exit 1
 fi
 
-use_gpu=$1
-
 # Found the following to work best with vids containing text (e.g. programming vid): 25 for CPU encoding and 27 for GPU.
 use_crf=25
 if [[ $use_gpu -eq 1 ]]; then
     use_crf=27
 fi
 
-filename=$(basename -- "$2")
-output_name="$3"
-
 compress-video-with-crf $use_gpu $use_crf "$filename" "$output_name"