Nokia Video Trimmer is able to trim all clips captured with your Lumia device. Commonly these are H.264 with an .mp4 container. You can't trim a video which you have downloaded from web. Most likely it probably is not in the right format.
- Can I disable the background music on my Storyvideo in Lumia Storyteller?
- Can I select folders from where photos will be shown on Lumia Storyteller?
- Is it safe to use Lumia Beamer?
- Where and how in online can I view a shared Lumia Refocus photos?
- Can I download my shared cinemagraphs back to my Lumia phone?