How to convert YUY2 (YUYV 422) to png format

[oscargomezf]

Hi everyone,


I was trying to convert YUY2 (UYUV 422) Format to png, but I can't. I've tried this command:

convert -size 1280x720 -depth 8 -format YUV -sampling-factor 4:2:2 yuv:frame.yuv -colorspace rgb png:frame.png


But it doesn't work. I can see the image in the correct size but It appears with green and pick colours. I think I need somehow tell the convert application to configure in YUY2 mode.

Can anyone help me?


Best regards.

[oscargomezf]

Hi everyone,

I was trying to solve the problem. I've got two image examples from this web: http://www.sunrayimage.com/examples.html

tulips_uyvy422_prog_packed_qcif.yuv
tulips_yuyv422_prog_packed_qcif.yuv

With this command and the image with the YUV format: uyuv 4:2:2 it seems to be that works fine :
display -size 176x144 -depth 8 -sampling-factor 4:2:2 -colorspace RGB yuv:tulips_uyvy422_prog_packed_qcif.yuv

The problem is when I try to use an image with the UYV format: yuyv 4:2:2. The image is displayed with green and pink tones, something that it's normal due to YU and YV are swapped:
display -size 176x144 -depth 8 -sampling-factor 4:2:2 -colorspace RGB yuv:tulips_yuyv422_prog_packed_qcif.yuv

So, right now the problem is: How can I tell the display application that the UY and UV are swapped?

Best regards.