[magick-users] convert JPEG to YUV 4:2:2,upsamplig or decoder?

[eduardo]

Hi,

Currently I'm developping a JPEG HW decoder to YUV4:2:2

In order to my testbench I use the library imagemagick and the command
convert:

convert image.jpeg -interlace partition -depth 8 image.yuv

It converts my image .jpeg to YUV4:2:0(by default).

When I use the command:

convert image.jpeg -interlace partition -sampling-factor 2x1 -depth 8
tester.yuv

Itś transformed in YUV4:2:2.

My question is:
This Transformation is upsampling or Imagemagick has a decoder Jpeg to
YUV 4:2:2???


Thanks for your help,

Edu