Fix shellcheck issues and encoding in slop-ffmpeg-area

slop-ffmpeg-area

@@ -2,14 +2,14 @@
 
 SCREENCAST_PID_FILE="$HOME/.screencast-pid"
 
-if [ -f $SCREENCAST_PID_FILE ]; then
-        notify-send "Stopping screencast"
-	pid=$(cat $SCREENCAST_PID_FILE)
-	kill $pid
-	tail --pid=$pid -f /dev/null
-	rm $SCREENCAST_PID_FILE
-        notify-send "Screencast stopped"
-	exit 0
+if [ -f "$SCREENCAST_PID_FILE" ]; then
+    notify-send "Stopping screencast"
+    pid=$(cat "$SCREENCAST_PID_FILE")
+    kill "$pid"
+    tail --pid="$pid" -f /dev/null
+    rm "$SCREENCAST_PID_FILE"
+    notify-send "Screencast stopped"
+    exit 0
 fi
 
 DIR="$HOME/Videos/screencasts/"
@@ -19,16 +19,16 @@ FILENAME="$DIR$DATE.mp4"
 slop=$(slop -f "%x %y %w %h %g %i") || exit 1
 [[ $? = 1 ]] && notify-send "Screencast cancelled" && exit 1
 notify-send "Starting screencast"
-touch $HOME/.screencast-pid
-read -r X Y W H G ID < <(echo $slop)
-((ffmpeg -y -f x11grab -s "$W"x"$H" -i :0.0+$X,$Y -f pulse -i 1 $FILENAME) & jobs -p > $SCREENCAST_PID_FILE)
-
-while [ -f $SCREENCAST_PID_FILE ]; do
-	sleep 1
+touch "$HOME/.screencast-pid"
+# shellcheck disable=SC2034
+read -r X Y W H G ID < <(echo "$slop")
+[ ! $((W%2)) -eq 0 ] && W=$((W-1)); [ ! $((H%2)) -eq 0 ] && H=$((H-1))
+( (ffmpeg -y -f x11grab -s "$W"x"$H" -i :0.0+"$X","$Y" -f pulse -i 1 -vf format=yuv420p -profile:v baseline "$FILENAME") & jobs -p > "$SCREENCAST_PID_FILE" )
+
+while [ -f "$SCREENCAST_PID_FILE" ]; do
+    sleep 1
 done
 
 # xclip -selection clipboard -t video/mp4 "$FILENAME"
-dragon-drag-and-drop $FILENAME
+dragon-drag-and-drop "$FILENAME"
 notify-send  "Saved screencast" "$DATE.mp4"
-
-