What is Tdarr?
Tdarr is a popular conditional transcoding application for processing large (or small) media libraries. The application comes in the form of a click-to-run web-app, which you run on your own device and access through a web browser.
Tdarr uses two popular transcoding applications under the hood: FFmpeg and HandBrake (which itself is built on top of FFmpeg).
Transcoding: digital to digital media conversion
Conditional: Each file is run through a set of customisable rules to determine
whether it needs to be transcoded or not