Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Support lossless mode! #151

Open
ycho opened this issue Mar 22, 2018 · 5 comments
Open

Support lossless mode! #151

ycho opened this issue Mar 22, 2018 · 5 comments

Comments

@ycho
Copy link
Collaborator

@ycho ycho commented Mar 22, 2018

No description provided.

@ycho

This comment has been minimized.

Copy link
Collaborator Author

@ycho ycho commented Aug 8, 2018

Won't do this.

@ycho ycho closed this Aug 8, 2018
@tdaede tdaede reopened this Feb 12, 2019
@tdaede

This comment has been minimized.

Copy link
Collaborator

@tdaede tdaede commented Feb 12, 2019

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.

@ycho

This comment has been minimized.

Copy link
Collaborator Author

@ycho ycho commented Feb 12, 2019

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

@tdaede

This comment has been minimized.

Copy link
Collaborator

@tdaede tdaede commented Feb 12, 2019

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

@cryptomilk

This comment has been minimized.

Copy link

@cryptomilk cryptomilk commented Nov 26, 2019

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/

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
3 participants
You can’t perform that action at this time.