void setup (std::vector<Filter const *>);
AVFilterContext* get (std::string name);
protected:
virtual std::string src_parameters () const = 0;
virtual std::string src_name () const = 0;
void setup (std::vector<Filter const *>);
AVFilterContext* get (std::string name);
protected:
virtual std::string src_parameters () const = 0;
virtual std::string src_name () const = 0;