It's actually not feature request, but it's only way I found to contact with developers.
There is proprietary software called "Smoth Video Project (SVP)". Its installation contains AviSynth, SVPFlow plugin, based on MVTools2 plugin, which is licensed also under GNU GPL, and several plugins (svpflow2.dll, svpflow_cpu.dll, svpflow_gpu.dll) which are licensed by own proprietary license (by the way I do not believe that they not content any GPL licensed code).
It is legit to distribute proprietary plugin by so?
I'm wondering if this plugin became Open Source, but developers aren't think so. May be we could reach it by law?
Thank you in advance.