Nokia Lumia 810 - What can I do with the Video Trimmer app on my Lumia phone?

You can use Video Trimmer to trim video clips captured with your Lumia device by selecting start and end points for the clip.

To select start and end points for a clip in the trimming view, just drag the start and end indicators below the video preview.

To preview the trimmed result, simply tap the play symbol.

After trimming and saving a video clip, it is saved in the Saved Pictures album that can be accessed with the Photos applicaton.