< swr options to use for the auto-inserted aresample filters, Access ONLY through AVOptions
This callback may be set by the caller immediately after allocating the graph and before adding any filters to it, to provide a custom multithreading implementation.
Opaque object for libavfilter internal use.
Maximum number of threads used by filters in this graph. May be set by the caller before adding any filters to the filtergraph. Zero (the default) means that the number of threads is determined automatically.
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.
< libavresample options to use for the auto-inserted resample filters
< sws options to use for the auto-inserted scale filters
Private fields
Type of multithreading allowed for filters in this graph. A combination of AVFILTER_THREAD_* flags.