Sets the number of extra hardware frames which the filter will
allocate on its output links for use in following filters or by
the caller.
Some hardware filters require all frames that they will use for
output to be defined in advance before filtering starts. For such
filters, any hardware frame pools used for output must therefore be
of fixed size. The extra frames set here are on top of any number
that the filter needs internally in order to operate normally.
This field must be set before the graph containing this filter is
configured.
Sets the number of extra hardware frames which the filter will allocate on its output links for use in following filters or by the caller.
Some hardware filters require all frames that they will use for output to be defined in advance before filtering starts. For such filters, any hardware frame pools used for output must therefore be of fixed size. The extra frames set here are on top of any number that the filter needs internally in order to operate normally.
This field must be set before the graph containing this filter is configured.