Raphael Canut
2018-Apr-16 19:39 UTC
[theora] NHW Project - quality improvement for -l4,-l5 settings
Hello, I have improved quality for -l4 and -l5 high compression settings.These settings are now really better and very competitive, I now prefer them compared to x265 (HEVC). Update at: http://nhwcodec.blogspot.com/ I am also working on -l6 quality setting, I can simply increase quantization for it but I am not totally satisfied with this solution for now... Looking for more advanced processing at these compression ratios, like an efficient denoising, as do HEVC, AOM AV1,... Cheers, Raphael -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/theora/attachments/20180416/46d2fd7a/attachment.html>
Raphael Canut
2018-Apr-17 17:42 UTC
[theora] NHW Project - quality improvement for -l4, -l5 settings
Hello, Yes, for -l4 and -l5 high compression settings I have saved a lot of bits on UV chroma planes, more than the other codecs I think... But I still find that saving on UV chroma planes and giving these bits to Y luma plane is still more efficient visually... According to my tests, eyes (at least mine) are a lot more sensitive to Y luma plane than UV chroma planes. With this processing, I find that now the -l4, -l5 high compression settings of the NHW Project are better than x265 (HEVC)! What would you think of this increased compression of UV chroma planes? Cheers, Raphael 2018-04-16 21:39 GMT+02:00 Raphael Canut <nhwcodec at gmail.com>:> Hello, > > I have improved quality for -l4 and -l5 high compression settings.These > settings are now really better and very competitive, I now prefer them > compared to x265 (HEVC). > > Update at: http://nhwcodec.blogspot.com/ > > I am also working on -l6 quality setting, I can simply increase > quantization for it but I am not totally satisfied with this solution for > now... Looking for more advanced processing at these compression ratios, > like an efficient denoising, as do HEVC, AOM AV1,... > > Cheers, > Raphael >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.xiph.org/pipermail/theora/attachments/20180417/5f2976d9/attachment.html>