Trimming the clip

Trim here, not in your phone’s gallery. An edited copy from the gallery usually loses the timestamp Cycladat needs to find your ride; trim in Cycladat, not on your phone explains why. Import the original.

Swipe up on the video in the editor and the trim view opens: a strip of thumbnails across the width of the screen with a handle at each end. Drag the handles in to cut the start and end. The preview follows, and so do the stickers, because the data window is the trimmed range, not the whole file.

The limits

A finished clip has to be between 3 and 90 seconds. Under three seconds there isn’t enough for the stickers to say anything, and the app won’t open a video that short at all. Over ninety and the export gets long and the file gets big, and honestly nobody watches a two-minute telemetry overlay. If you have a long video, pick the best minute and a half of it.

The elevation strip

Below the thumbnails is the elevation strip, which is about lining the ride data up with the footage rather than about trimming. If the stickers are showing the right numbers you can ignore it. If they’re a few seconds (or a few hours) off, that strip is the fix, and it has a page of its own: my data doesn’t line up with the video.

Trimming and aligning are independent. Cutting the clip doesn’t move the data, and sliding the data doesn’t move the cut.

Closing

Swipe down, or tap the chevron, to go back to the full-size preview. The trim sticks. The export renders the trimmed range and nothing outside it.