Scratch Live 2.3.3 includes a large rewrite of all MPEG-4 file reading and writing of meta data (tagging data). This includes .mp4, .m4a, .aac and many .mov files. One of these changes involves writing Serato metadata to files in a different way than previous versions of Scratch Live.

When playing one of the affected audio files in Scratch Live for the first time, all existing Serato metadata will need to saved in the new format. Consequently there will be a lot of writing to file, as signified in the status bar.

Scratch Live 2.3.3 will not delete meta data created in previous versions of Scratch Live, however, new metadata created in Scratch Live 2.3.3 will not be able to be read in older versions of both Scratch Live and ITCH. Such meta data includes cues, loops etc.