Hi Ti expert；
Now I have problems about MSC: Multiple Scaling。
SDK version ： 7.1
Question 1：
I learned that Scaling ratio supported: 1x ~ x/4 from the technical manual 。Why did I success Scale image by 1/5？
Question 2:
When I input 1280X960 NV12 format and output five scaling images (1/2, 1/3, 1/4, 1/5, 1/5 Scaling ratio)； I create five NV12 format images By vxCreateImage API and output resolution as flow:
imgOut[0] w 640 h 480
imgOut[1] w 426 h 320
imgOut[2] w 320 h 240
imgOut[3] w 256 h 192
imgOut[4] w 256 h 192
1/4 and 1/3 output images color is different from source image， I found the format of 1/4 and 1/3 output images is NV21, but I created the format of output images is NV12. What might cause this problem？ My result as flow：
