Support for 4K video source content has become pretty standard in video editing software, but the support varies among the products. For example, some but not all of the applications can import Sony XAVC and XAVC-S formats, which are used by Sony's popular DSLRs, mirrorless cameras, camcorders, and professional video cameras. The same holds true for the H.265 High Efficiency Video Coding (HEVC) standard. Most of the applications here now can import and export HEVC, though there are still a few holdouts.
This great video editing app for iPhone takes you back to old times. You transform the video into a variety of vintage film styles with many combinations to choose from: black & white, sepia, color, vintage sepia, 20's movie or 60's home video, etc. You can speed up or slow down the videos. And several sound options like Video, Piano 1, Piano 2, Movie Projector, etc. are provided to add more feeling to your movie.