An example device for processing media data includes one or more processors configured to receive a file including media data, determine that a portion of the file is potentially erroneous, form error-indicative data indicating that the file includes the portion that is potentially erroneous, and store the file and the error-indicative data to a location available to a target application for the media data of the file. Another example device includes one or more processors configured to receive a file including media data, receive a first set of information indicative of one or more removable portions of the file that can be removed from the file, receive a second set of information indicative of a suspect portion of the file, determine one or more of the removable portions that completely overlap the suspect portion, and remove the determined one or more removable portions from the file.