Frame request callback. A call to this should result in at least one frame being output over the given link. This should return zero on success, and another value on error. See ff_request_frame() for the error codes with a specific meaning.
Output pads only.
See Implementation
Frame request callback. A call to this should result in at least one frame being output over the given link. This should return zero on success, and another value on error. See ff_request_frame() for the error codes with a specific meaning.
Output pads only.