If you have trimmed video on your iPhone, there are a few things you can do to help it recover. First, try restoring it to its original form. This will erase any data that was added since the trimming and will restore all the videos and photos that were in the trimmed file. If this is not possible or if you want to keep some of the footage, then you can try using a video editor such as Final Cut Pro or Adobe Premiere to create a new trimmed file that is ready for playback.
