I need to slow down a clip which has been recorded at 30 FPS.
slowmoVideo is very interesting as it uses the optical flow technology for interpolating frames like respeedr does. And it uses FFMpeg.
It can produce super fluid video. It can even be enhanced by a module to use the GPU efficiently.
Unfortunately I have problems and at Github no one is answering to this technical issue (maybe because the people spammed around in the past). Does anyone of you have the possibility to take a look at it?
My debian package installs perfectly and starts without issues. I can open the clip but on render it crashes. Using the command line I get this error:
Have OpenCL: true useOpenCL: true true 1 1 terminate called after throwing an instance of 'cv::Exception' what(): OpenCV(4.6.0) ./modules/video/src/optflowgf.cpp:1120: error: (-215:Assertion failed) _flow0.size() == prev0.size() && _flow0.channels() == 2 && _flow0.depth() == CV_32F in fun...