This file converts a Plex DVR recorded TS file to an MP4 container file. In my experience, it reduces file size 50-70%
To use the script copy it to whatever directory you want to run the folllowing command
python video-transcode.py /path/to/ts/files
The script will find all the .ts files in that directory (NO SUBFOLDERS), then, using the ffmpy module in python, run ffmpeg on all the files to convert them to mp4 files. It will put the transcoded file in the same directory as the original file. The script does NOT remove the original file. If you want to delete the original file, you can add the --deleteOriginal parameter to the command and if the transcoded file is between 0.25 and 1.2 times the size of the original it will delete the original.
I've test this on Python 2.7.5 as that is what I have on my server. Feel free to post any bugs AND SOLUTIONS if there are problems with other versions.