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Hi guys,

I’m not really making anything TF2-related, but I figured this is still a good place to get help… I’m trying to edit a video that is at 30fps. I want to add a slowmo replay at 15fps. However, if I just join the two together, the whole thing plays at 30fps… So I suppose I need to reencode the slowmo part at 30fps first.

How do I do that? If I just set the encoding to 30fps, it simply goes back to playing at normal speed again.

I’ve googled the hell out of the internet but couldn’t find a solution.

I’m using Avidemux for now, but I’d use any free software for Linux or Windows, if necessary.

Thanks!

I am not an expert but wont an 15 fps slowmo look incredibly bad and choppy?

I don’t know of any free alternative to this, but if you want slow motion out of 30fps then you need something like pixel motion from After Effects. That algorithm basically creates frames for you, interpolating between existing frames. The quality of the result depends on the source footage: the faster and blurrier the shot, the worse it will look. It generally gives quite good results though.
Here’s an example of it in action (notice the nasty warping artifacts in blurry areas, that’s what I was talking about): https://youtu.be/YO3qhBYvTAo

Another alternative is kronos in Nuke, which has parameters that can be tweaked, unlike pixel motion. But again, Nuke isn’t free and it’s way more expensive than After Effects for that matter :/ Hopefully what I suggested will give you an idea for what to look for though.