This script utilizes ffmpeg, the same tool Plex uses, to decode the video stream and captures the output for any errors during playback and sends the playback errors to a log file. So essentially it plays the video in the background faster than regular speed. It then checks the error output log file to see if there is anything inside. If ffmpeg was able to cleanly play the file, it counts as a passed file. If there is any error output, an error could be anything from a container issue, a missed frame issue, media corruption or more, it counts the file as failed. So if there would be an issue with playback and a video freezing, it would be caught by this method of checking for errors. Because of the nature of the error log, any errors that show up, even simple ones, will all count as a fail and the output is captured so you can view the error log. Some simple errors are easy to fix so I have included an auto-repair feature which attempts to re-encode the file which is able to correct some issues that would cau