Databending
Databending is a type of Digital Distortion that involves the general technique of intentionally messing with (usually) video files to corrupt their output.
Most commonly, this is done using Audacity or a corruption tool like Windows Glitch Harvester.
Datamoshing is a common form of this that lets you 'mosh' videos together.
Usage
There are many, many ways to perform databending, all with different results and effects.
With Audacity