Hi Thomas, The NHW codec is at very early experimental stage (it's an image codec furthermore, not a video codec), and image input size is fixed 512x512 size for now.
Also, the NHW codec is not very good at detail retention, but it gives more neatness, sharpness to image contours, edges. Cheers, Raphael 2015-08-12 21:24 GMT+02:00 Thomas Daede <[email protected]>: > On 08/12/2015 12:15 PM, Raphael Canut wrote: > > 2015-08-12 20:23 GMT+02:00 Timothy B. Terriberry <[email protected] > > <mailto:[email protected]>>: > > > > > > Thanks for the contribution. There are several ways to go from here. > > > > One thing that would be interesting to know would be the performance > > compared to Daala and Thor. I would suggest working with Thomas > > Daede <[email protected] <mailto:[email protected]>> to make that > happen. > > > > That's a good idea, but keep in mind that the NHW codec is optimized for > > neatness (and sharpness), so results for PSNR and SSIM are not good > > (there are more "errors").For now, the best way I have found to evaluate > > the NHW codec is to visually evaluate it.... It is also now optimized > > for mid/normal compression, there are no high compression settings... > > It's still experimental! > > We do have a couple of other metrics that value detail retention more, > such as PSNR-HVS and FASTSSIM in our code tree. > > To be able to hook your codec up to arewecompressedyet, it needs to > support YUV 4:2:0 input and output in the y4m format. > > _______________________________________________ > video-codec mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/video-codec >
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