mikeversteeg

I have no problems with this. Another way of cleaning up is to remove YUV420P functions if there is a similar YUV422P version.

Can't you convert 422 to 420 by doubling the U & V stride?

Oh no, that's to make a 420 from a 422. What we need here is to tell stride to increment at half speed. The rest of the code can remain...

Good question. Unfortunately a typical setup scales down a few dozen video signals in all kind of resolutions. This could be down to 25% of original (within same colour model,...

Interesting idea. Maybe I should test the algorithm first to see what the result looks like on typical video streams?

Will do!

I'm afraid it doesn't work, or do I need to change something else besides the resize method? Depending on the size reduction there is no image or it has a...

Is SimdLib threadsafe?

It's really weird. If I start small and increase target size slowly I see Y-only, some size also have U&V, some ranges show gradients and above 50% the entire target...

So at exactly 50% the resizer works and at 25% it works reasonably (but no colours) which enabled me to test your algorithm. I have to say I am having...