You need video filters or we can't change the resolution or framerate from what the project is
Premiere, After FX, Davinci-resolve are video editors, which means, you just Google "how to change project framerate in Premiere/After FX/Davinci-resolve".
For "Voukoder's exclusive filters", they are not as advanced as After FX, nor dedicated to fix horridenous Anime BluRays as VapourSynth filters, and not academic purposed as OpenCV.
The other reason to cut off the filtering is for the sake of focusing software development to encoders and connectors.
One more reason to cut off the filtering is for performance and multiplatform compatibility, because you don't expect these filters will be updated to work properly on newer CPUs.