This is an applescript droplet that allows you to drop movie and have them quickly remuxed (not converted) to MP4
this is great if you run a Plex server, as you don't need to transcode MP4's so there is less stress on the server.

How to use:

Just drop a file or group of MKV, MOV, or AVI files onto the app, the MP4 version will replace the old version.
A 600 Meg movie takes under a minute, a full HD movie might take a few minutes.

Key points:
You need to have FFMPEG installed - see below
Its much faster than coverting the file in handbrake
The sound and video quality of the original file is maintained
As its remuxed (not converted) the resulting file size will be similar to the original file.
It places the original file in the trash, if an error is dtected the original remains and a logfile appears explaning the issue.


Installing ffmpeg
1 First install brew (https://brew.sh) by typing this into the terminal without quotes "/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
2 Then install ffmpeg by typing this in the terminal without quotes "brew install ffmpeg"