V210 issue fix + correct packing

internal/generator/cpu.go

@@ -29,8 +29,8 @@ func NewCPUGenerator(
 	if width == 0 || height == 0 {
 		return nil, fmt.Errorf("cpu: width and height must be greater than zero, got %dx%d", width, height)
 	}
-	if width%6 != 0 {
-		return nil, fmt.Errorf("cpu: width must be divisible by 6, got %d", width)
+	if width%2 != 0 {
+		return nil, fmt.Errorf("cpu: width must be even for 4:2:2 video, got %d", width)
 	}
 	if baseRenderer == nil {
 		return nil, fmt.Errorf("cpu: base renderer is nil")
@@ -39,7 +39,7 @@ func NewCPUGenerator(
 	g := &CPUGenerator{
 		width:  int(width),
 		height: int(height),
-		base:   make([]byte, int(width/6*height)*16),
+		base:   make([]byte, V210FrameSize(int(width), int(height))),
 		patch:  patch,
 	}
 	if err := baseRenderer(g.base, g.width, g.height, 0); err != nil {