Resize video to 720p MP4 with sharpen effect

resize-video.sh

#!/bin/bash
if [ -z "$1" ]
    then echo "
File name to process required. File name shouldn't contain any whitespace chars.

If you want to limit cpu use for example:
cpulimit -e ffmpeg -l 200  # every thread has 100 'points'
"
else
    # This line is used for testing small chunks of the file
    #ffmpeg -i $1 -ss 00:01:00 -to 00:01:10 -vf scale=-1:720,unsharp=3:3:1 -c:v libx264 -crf 29 -preset medium -c:a copy "$1-2.mkv" &&
    ffmpeg -i $1 -vf scale=-1:720,unsharp=3:3:1 -c:v libx264 -crf 27 -preset fast -c:a copy "$1-2.mkv" &&
    # mkv from ffmpeg seems to have some issue with seeking, mp4 is fine
    ffmpeg -i "$1-2.mkv" -vcodec copy -acodec copy "$1.mp4" &&
    rm "$1-2.mkv" &&
    rename 's/\.mkv//' "$1.mp4";
fi