Question / Help Is Lancsoz really the best filter?

[Videophile]

So, tried @sam686's edited filter, and it looks great imo.

https://www.twitch.tv/ltroyalshrimp/v/56082776

 

[Lain]

I'll test the fix, thank you! If you fixed lanczos I'll be super happy. It's been off for way too long.

 

[sam686]

Bicubic may have nearly the same problem as unedited lanczos when downscaling. Bilinear is not as bad.

My lanczos edits probably should go into OBS-studio as so far, users are happy with my edits. I made a pull request with a windows line ending, although not sure is I did it right.

For old legacy OBS: My lanczos edit read the matrix using custom vertex shader to determine how much to scale, which is more complicated on old OBS. I haven't figured out an easy way...

Line ending: My effect file in lanczos_edit.zip had a different line ending that made it unreadable in windows notepad. OBS-studio don't care about which line ending, and any line ending works in wordpad, notepad++, and visual studio. Visual studio can change line ending in file, advanced save.

 

[Lain]

Eh, leave bicubic as-is for now, we'll see. I see what you did though, probably is on bicubic as well. I'll merge the lanczos edit.

 

[Dex022]

I don't know how to do this.Tried edit and when i try to record filter fails.Can i get info what exactly to do and when saving in what format?
Thank you.

 

[Sapiens]

@Dex022 Overwrite the existing lanczos_scale.effect in .\data\libobs with the one sam686 posted.

 

[sam686]

Using OBS-studio? My lanczos_edit.zip currently only works for OBS-studio.

 

[Dex022]

Ah i use classic OBS version.Sorry i misunderstood this is for studio version. I will try Studio version.

 

[thepolishdane]

I've been reading this thread now, and now i what to know.. Has this new implementation of en Lancoz filter and the bicubic filter been implemented in the latest OBS studio build ? or do i need to download this seperetly ? :) Thx.

 

[Sapiens]

Since 0.14.1 for lanczos, not sure about bicubic.

 

[RytoEX]

Sorry to revive an old thread.

It seems lanczos is patched in 0.14.0 and up. I don't see any similar commits for bicubic. Did anyone ever figure out if bicubic suffered from similar issues?