std::shared_ptr<Image> image (std::function<AVPixelFormat (AVPixelFormat)> pixel_format, VideoRange video_range, bool fast) const;
std::shared_ptr<const Image> raw_image () const;
std::shared_ptr<Image> image (std::function<AVPixelFormat (AVPixelFormat)> pixel_format, VideoRange video_range, bool fast) const;
std::shared_ptr<const Image> raw_image () const;