How to increas the fps of a video by adding "logical" frames?

[LeoKac]

Hello, I want to know, which software can increase te framerate of a video like this:

http://hfrmovies.com/avatar_60.mkv

This is a sample video of Avatar. The original video is 24fps, but somehow it was re-rendered into 60fps, and it looks absolutely natural.
please, tell me how can i do such kind of things? Which software can increase the fps like this sample?

Thanks a lot......

Here is the article about it:

http://www.hfrmovies.com/2012/12/30/sample-avatar-clips-at-48-fps-and-60-fps/

[poisondeathray]

search for motion interpolation technques, they have been discussed many times before

e.g. Free tools like avisynth mvtools2, svpflow, interframe . Commercial programs like after effects, nuke, plugins like twixtor, kronos
http://www.svp-team.com/wiki/Main_Page

Many side effects depending on the content (edge morphing)

[jagabo]

Keep in mind that this type of motion interpolation often generates weird artifacts. See the video in this post for a bad case example:

http://forum.videohelp.com/threads/339017-Motion-Interpolation-%28VidFIRE%29-Software?...=1#post2107214

You can see artifacts like that in many places in the sample you linked to, though not as bad or obvious.

[hello_hello]

InterFrame will do it and does a reasonably good job but it requires a little knowledge of AVISynth. If you happen to use an AVISynth based program for converting (MeGUI, RipBot264 etc) then using InterFrame is fairly easy (at least once it's working). You'd let your conversion program create it's usual AVISynth script for encoding, then open it with Notepad and simply add the InterFrame bit to the end. There's not much to think about as it automatically converts 24fps video to 60fps and 25fps to 50fps.

All the appropriate files in the Interframe download file need to be copied to the AVISynth plugin folder so they'll auto-load, but aside from installing AVISynth if need be, that's all the setting up required.