Thanks for writing! Currently Clip can only slowdown the speed of the media.
Your request is noted. The ability to speed up a clip would be a great feature to include.
A great feature to include? This feature is a must! In fact I was quite suprised to see that I was unable to speed a clip up. This is as important as audio gain and fade to black.
Sadly I also note that this request is now 6 months old and still not implemented.
I literally shot a wonderful sunset on my phone, wanted to speed it up, and post it, going to happen? nope, not until I get back to a workstation.
This feature is an absolute must for this application.
This would be great to have! Almost no iOS app can speed up videos past a factor of 8x or by selecting a target duration. This would be an opportunity to fill that gap.