let vhdr = NAVideoInfo::new(self.width, self.height, false, format);
let vci = NACodecTypeInfo::Video(vhdr);
let vinfo = NACodecInfo::new("rawvideo", vci, None);
let vhdr = NAVideoInfo::new(self.width, self.height, false, format);
let vci = NACodecTypeInfo::Video(vhdr);
let vinfo = NACodecInfo::new("rawvideo", vci, None);