Best Downscale Filter

J

Josshhh

New Member
Hello,

I typically downscale my videos, and I'm wondering what downscale filter is the best. I've used Lanczos for some test videos, and it looks fine to me, although I don't know if it's the best option out there. I'm recording gaming videos if you needed that information by the way. Thanks!
 
qhobbes

qhobbes

Active Member
It depends on the content.

Which downscale filter to use?

Use case: typically gaming Specs: not relevant, this is the OBS setup for the most capable machines Trying to figure out wether to use Bicubic vs Lanczos, heard that Lanczos is just unnecessary stress on the system but it has a higher sample count (not going to pretend I know what that means)...
obsproject.com obsproject.com
"Normally bicubic is recommended. It's a standard rescale and provides good quality.
Lanczos is more of a personal-preference/situational thing; it's normally used for face-cams and other real-life video... it does have a higher sampling count, and OBS' implementation includes a sharpen pass; good for real video, not so much for synthetic video (like gameplay) where you may get some minor over-sharpen artifacting (like halo effects in solid color blocks). But you likely won't even notice unless you're specifically looking for it.

Default: bicubic (especially for full-frame downscales)
Face-cam: right-click, Scale Filtering, Lanczos"
 
J

Josshhh

New Member
qhobbes said:
It depends on the content.

Which downscale filter to use?

Use case: typically gaming Specs: not relevant, this is the OBS setup for the most capable machines Trying to figure out wether to use Bicubic vs Lanczos, heard that Lanczos is just unnecessary stress on the system but it has a higher sample count (not going to pretend I know what that means)...
obsproject.com obsproject.com
"Normally bicubic is recommended. It's a standard rescale and provides good quality.
Lanczos is more of a personal-preference/situational thing; it's normally used for face-cams and other real-life video... it does have a higher sampling count, and OBS' implementation includes a sharpen pass; good for real video, not so much for synthetic video (like gameplay) where you may get some minor over-sharpen artifacting (like halo effects in solid color blocks). But you likely won't even notice unless you're specifically looking for it.

Default: bicubic (especially for full-frame downscales)
Face-cam: right-click, Scale Filtering, Lanczos"
Click to expand...
Thanks for your explanation! I'll make sure to switch to bicubic for gaming videos
 
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