EMA-VFI interpolation and RVRT

[zelenooki87]

Hi,

I noticed you've begun implementing support for video super-resolution (VRT) and FLAVR. When can we expect these features to be officially "working" in the Chainer framework?

I also have a suggestion: consider adding RVRT as a potential architecture. It's by the same author as VRT but less computationally expensive. https://github.com/JingyunLiang/RVRT

One more request: EMA-VFI interpolation is one of the best open sourced, interpolation methods available right now. Could you please consider including it as well? https://github.com/MCG-NJU/EMA-VFI

Thanks!

[RunDevelopment]

same author as VRT but less computationally expensive.

And more complex architecturally :)

I plan to add support for a lot more video SR and frame interpolation architectures in the future. This first PR just includes a few architectures, so I can figure out how to build the necessary infrastructure.

[zelenooki87]

This sounds great! By the way, I noticed that the safmn GitHub repository has been updated with new models. Could you update the safmn architecture in Spandrel to support them? Thanks!
https://github.com/sunny2109/SAFMN

[joeyballentine]

When can we expect these features to be officially "working" in the Chainer framework?

Potentially soon. We'd just have to implement them in a not very ideal way to work around chaiNNer's limitations. If we wanted to do it correctly, then it would take much much longer