Opaque user data. May be set by the caller to an arbitrary value, e.g. to be used from callbacks like @ref AVFilterGraph.execute. Libavfilter will not touch this field in any way.
See Implementation
Opaque user data. May be set by the caller to an arbitrary value, e.g. to be used from callbacks like @ref AVFilterGraph.execute. Libavfilter will not touch this field in any way.