Make PSPacked422_Reverse sample in texel center

build/data/libobs/format_conversion.effect

@@ -208,6 +208,9 @@ float4 PSPacked422_Reverse(VertInOut vert_in, int u_pos, int v_pos,
 	float odd = floor(fmod(width * vert_in.uv.x + PRECISION_OFFSET, 2.0));
 	float x = floor(width_d2 * vert_in.uv.x + PRECISION_OFFSET) *
 			width_d2_i;
+
+	x += input_width_i_d2;
+
 	float4 texel = image.Sample(def_sampler, float2(x, y));
 	return float4(odd > 0.5 ? texel[y1_pos] : texel[y0_pos],
 			texel[u_pos], texel[v_pos], 1.0);