Method Open

tests/EffectMask.cpp:96–96

	bool IsOpen() override { return is_open; }
	std::string Name() override { return "TrackingMaskReader"; }
	void Open() override { is_open = true; }
	void Close() override { is_open = false; }

	std::shared_ptr<openshot::Frame> GetFrame(int64_t number) override {