feat: select fourcc and handle hw decoded

default/inc_yuyv.glsl

@@ -3,11 +3,27 @@
 
 const int YUYV_FOURCC = 1448695129;
 
-const mat3x3 yuyv_to_rgb = {{1,1,1},{0,-0.39465,2.03211},{1.13983,-0.5806,0}};
+// https://en.wikipedia.org/wiki/Y%E2%80%B2UV
+const mat3x3 yuyv_to_rgb_bt709 = {
+        {
+            1,
+            1,
+            1
+        },
+        {
+            0,
+            -0.21482,
+            2.12798
+        },
+        {
+            1.28033,
+            -0.38059,
+            0
+        }
+    };
 
 vec4 yuyvTex(sampler2D tex, vec2 vUV, int base_width) {
     float w = base_width - 1;
-
     int x = int(vUV.x * w);
 
     int xU = x - x % 2;
@@ -17,12 +33,12 @@ vec4 yuyvTex(sampler2D tex, vec2 vUV, int base_width) {
     vec4 tV = texture(tex, vec2(xV / w, 1 - vUV.y));
 
     vec3 yuv = vec3(
-        x % 2 == 0 ? tU.x : tV.x,
-        tU.y - 0.5,
-        tV.y - 0.5
-    );
+            x % 2 == 0 ? tU.x : tV.x,
+            tU.y - 0.5,
+            tV.y - 0.5
+        );
 
-    return vec4(yuyv_to_rgb * yuv, 1.0);
+    return vec4(yuyv_to_rgb_bt709 * yuv, 1.0);
 }
 
 #endif