Xbox captures will not trim clips. Hard reset does nothing

There used to be an app called Upload Studio which has just been removed from the App Store. To trim your videos from your Xbox follow these steps.

1. First capture your gameplay by pressing your xbox button followed by X.

2. After a short while your clip will have saved to your recent captures.

3. To see these captures press your xbox button again and move to Capture & Share.

4. Go to recent captures and press A, then choose which clip you want to trim and edit.

5. An option should now appear near bottom of list saying Trim.

6. It may take several moments to load in your clip.

7. Move your left analogue to trim your clip from.the start and your right to trim it from the end.

8. When finished press A to preview clip or X to save.

Hope this has helped.

What are you meaning the trim? The outside casing on the console? What happens when you are told to reboot the console or factory reset?

Just guessing but I think OP means Trim game clips in Manage Captures.

I have had no problem using it.

Just wanted to weigh in here that I'm seeing the exact same problem as of May 5th 2020. Trying to record 4k DVR clips has been resulting in either "Preparing your clip" and the clip not showing up anywhere, or clips showing as 22 seconds long, but effectively
a single second of a clip. I can also confirm that changing the capture to 1080p does seem to fix the issue, but ideally I could continue capturing at 4k60fps. I've tried a hard reset, full power cycle unplugging the xbox, just about everything I can think
about within the capture settings. Nothing seems to be resolving the issue so I'm stuck at 1080p capturing for the time being.

Just wanted to weigh in here that I'm seeing the exact same problem as of May 5th 2020. Trying to record 4k DVR clips has been resulting in either "Preparing your clip" and the clip not showing up anywhere, or clips showing as 22 seconds long, but
effectively a single second of a clip. I can also confirm that changing the capture to 1080p does seem to fix the issue, but ideally I could continue capturing at 4k60fps. I've tried a hard reset, full power cycle unplugging the xbox, just about everything
I can think about within the capture settings. Nothing seems to be resolving the issue so I'm stuck at 1080p capturing for the time being.

I have the exact same issue, down to the 22 second capture and everything. Well detailed, thanks. Looking forward to a solution.

I can't believe how bad this problem is. I add four clips and edit/trim, and then it stops letting me add them at all. Discard they project and start over, now no clips will be added. Reset console, hard reset console, uninstalled and reinstalled the
app for... drumroll... Nothing. Doesn't work.

This is what will put Stadia over the top eventually. Imagine smooth editing that goes straight to YouTube.