Reprocess an already ingested file
In order to reprocess an already ingested file, you need to have the original master file at the place specified by it's file_location which can be different than it's absolute location. See Master and Derivative File Locations and Managing Master Files for more details on this.
mediaobject = MediaObject.find('avalon:1')
mediaobject.parts #Will return an array of master files associated with this item
masterfile = mediaobjects.parts[0]
masterfile.file_location #Verify that the file exists and is accessible at this location
masterfile.process #This will kick off the reprocessing