Contact Slow Fast Slow Support

This app had long been my favorite for editing the speed of slow motion (high speed) and even normal speed videos where I’m looking to do custom adjustments and variations of speed. It was elegant in using curves to gracefully ramp up or down the speed of the video. Exactly what I wanted. However, while it can take in a 4K video, it exports only 1080P / HD video, at 30 FPS. I’d love to see this app updated to support higher resolutions, and a selection of FPS (24, 25, 30, 50, and 60). This app has served me well for a long time, but with 4K being a popular resolution, I need to find a new app if this one won’t be updated.

This is by far the BEST free slow motion to fast motion app out there. The customization you get with being able to adjust specific, different parts of the video is really nice. It’s easy to use. Also, you can reverse your video if needed. A lot of great features for sure! The only annoying this is that the app now crashes on me whenever it goes to compress my videos. It didn’t do it originally but within recent uses, it now crashes every time it tries to compress and save the video. CREATOR, PLEASE FIX THIS!!!

I wrote a review previously and the developer responded but the review never showed up here. So I am posting it again. I found this app after going through at least a half dozen scammy ad-ridden video speed apps. This app is actually pretty good and it does what it says. The only downside is the 800% limit. So if you want to make a 4000% faster video you have to make a sped-up video and then import that video and speed it up again. So its just an extra step, big deal! It’s also a nice touch that it gives you a choice to use the chipmunk audio or just sample the regular audio playback speed. 4 out of 5 stars. Almost perfect.