problem with croma components for format 4:2:2 packed

[iulia]

Hello,

I got a purple shade and strange artefacts on the encoded sequences at high QP, between 45 to 51 with a step of 1. The input sequence is YUV 4:2:2 8 bit packed format. I think that is a problem with Croma components for this format. Could you check if the results are reproducible on a similar standard sequence or to tell if it is an aspected result?

Regards,
Iulia

[iulia]

visual example of the results

[XiangLi]

Hi Iulia,

Could you provide exact command line settings so that we could reproduce your encoding result? Please also attach you encoding log. Thanks.

[iulia]

encoder output log file

[iulia]

encoder configuration file

[iulia]

Hello,

Thank you for your response.
I have attached the encoder configuration file and the encoder log file.
The command line used is: ./bin/EncoderAppStaticd -c encoder_intra_vtm_modified.cfg >intra_log_visible_QP51.log

Regards,
Iulia

[XiangLi]

Could you also upload AAT_20120113_extrait_vue_visible.yuv? One-frame yuv would be enough as you only coded one frame.

[iulia]

Hello,

Here it is a google drive link to the requested sequence. Please, don't share it further. It is a YUV 4:2:2 packed format (UYVY) of resolution 1920x1080:

​https://drive.google.com/file/d/1O8GKkT7USOx49C_3FGNzzzI8aaJ4zQJK/view?usp=sharing

The research is about the coding of cockpit video screen content and we are trying to do a preliminary study about how VVC is behaving on our content.

Regards,
Iulia

[ksuehring]

This issue was confirmed to be an issue with the input image format (VTM expects planar format) in email discussion.