Drupal Association members fund grants that make connections all over the world.
A quick look at the code suggests that most media derivative functionality is handled at the file level. For my use case, I am generating 30 second samples from an audio file for download, and I want to allow per field setting of where in file the sample should begin (e.g. 67 seconds). Media Derivatives should supply the field definition to downstream processors so additional per-field settings can be used in derivative generation, in addition to the file path.