FFMPEG - Interpolate frames or add motion blur

Question

I just watched the trailer for the hobbit, and a trailer for the avengers which both feature an increased framerate. A lot of the comments state that this isn't "true" 60fps since it was not shot at 60fps, but actually a lower frame-rate that has been interpolated.

If this is the case, is there any way that I can convert some of my existing media in Linux with ffmpeg or avconv in the same way in order to create this "illusion"?

I can understand if higher framerates are not to other's tastes, but not the point of this post.

Solution 1

You can try

ffmpeg -i source.mp4 -filter:v tblend -r 120 result.mp4

or this from https://superuser.com/users/114058/mulvya

ffmpeg -i source.mp4 -filter:v minterpolate -r 120 result.mp4

There are filter for motion blur

Solution 2

You can use Butterflow as it uses ffmpeg https://github.com/dthpham/butterflow

It's a command-line tool that can:

Increase a video's frame rate by rendering new frames based on motion (pixel-warping + blending). Make smooth motion videos (simple blending between frames). Leverage new frames/increase in frame rates to make fluid slow motion videos.

Solution 3

ffmpeg -i input.mp4 -filter:v "minterpolate=mi_mode=2" output.mp4 

is for simple dynamic fast frame interpolation using a little bit of motion blur and calculations.

Solution 4

you can try with Slowmovideo. look the demo: https://www.youtube.com/watch?v=YAVRnEg0Vps

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Comments

[Programster]

I wrote a script that ubuntu 16.04 users can use to install the tool: blog.programster.org/ubuntu-16-04-install-butterflow It takes a lot of grunt and I found I had to use it on videos no larger than 640 x 480 if I wanted to get a result in a reasonable amount of time. Obviously hardware dependent.

[i336_]

Note! The Linux version (64-bit only) appears to be freeware, but this plugin is not open source. The Windows and macOS versions are $10. The plugin does seem extremely compelling though, I generally prefer open source stuff but this is on my to-try list.

[fachexot]

minterpolate works really well!

[Amessihel]

the link leads to a user page.

[Todd Lehman]

Hi... Could you explain how minterpolate=mi_mode=2 differs from just plain minterpolate? I'm curious to learn the difference.

[Programster]

I'm changing this to the correct answer (from butterflow) as this answer is just about using ffmpeg which is closer to the asked question. Also, installing Butterflow on Ubuntu 18.04 or later has proved impossible for me, and I've tested minterpolate and it does indeed work extremely well. I use this command: ffmpeg -i input.mp4 -vf "minterpolate=fps=60:mi_mode=mci:mc_mode=aobmc:me_mode=bidir‌​:vsbmc=1" output.mp4

[damian101]

That doesn't look useful to me for interpolation though, should only add lots of motion blur. To me this looks only useful for framerate reduction, to get smoother, less stuttery video.