Finalize the context before use. This function must be called after the
context is filled with all the required information and before it is attached
to any frames.
@param ref a reference to the AVHWFramesContext
@return 0 on success, a negative AVERROR code on failure
Finalize the context before use. This function must be called after the context is filled with all the required information and before it is attached to any frames.
@param ref a reference to the AVHWFramesContext @return 0 on success, a negative AVERROR code on failure