a #GstBuffer
the flags
number of bytes in this frame which should be counted as metadata overhead, ie. not used to calculate the average bitrate. Set to -1 to mark the entire frame as metadata. If in doubt, set to 0.
a newly-allocated #GstBaseParseFrame. Free with gstbase.base_parse_frame.BaseParseFrame.free when no longer needed.
Allocates a new #GstBaseParseFrame. This function is mainly for bindings, elements written in C should usually allocate the frame on the stack and then use gstbase.base_parse_frame.BaseParseFrame.init_ to initialise it.