rav1e Support lossless mode!

Mar 22 '18 02:03 ycho

Won't do this.

Aug 08 '18 22:08 ycho

Someone had an interesting use case of encoding MAME files, e.g. og.kervella.org/pt.7z

This is low priority but no reason not to implement it.

Feb 12 '19 19:02 tdaede

Sure, rav1e always can encode losslessly. I believe AV1 do that with only using 4x4 DCTs as transform, correct?

Feb 12 '19 19:02 ycho

There's a special 4x4 transform that we currently don't have. That's the main thing missing.

Feb 12 '19 19:02 tdaede

I've implemented support for importing and exporting AVIF images in darktable using libavif. I would be interested to have lossless support using rav1e.

https://blog.cryptomilk.org/2019/11/26/avif-image-support-for-darktable/

Nov 26 '19 15:11 cryptomilk

We have added support for importing and exporting AVIF files in darktable which will be released with version 3.0.1. It would be great to have this fixed in rav1e soon.

Dec 28 '19 09:12 cryptomilk

Any chance of this issue seeing some love?

Dec 10 '20 12:12 eclipseo

I'd like to voice my support for this feature as well :heart: :pray:

EDIT: I also realized that this issue is relevant to #2759, since aomenc can do lossless already.

Sep 25 '22 05:09 CartoonFan

Just now seeing the recent commit here. Has there been any progress on lossless encoding? :eyes:

Jan 08 '24 11:01 CartoonFan