There are many things you can do to edit photos in the Google Photos app and service. Videos have become the shorter end of the stick though, as you can do very little with the videos loaded into the app. They hardly have any editing features for videos and even the playback options are quite limited. It seems like Google is trying to make up for it by rolling out some new features for videos in Photos, as you’ll soon be able to double tap and pinch to zoom when viewing them in the app.
Android Police says If an update is rolling out for some users, you will be able to double-tap and zoom the videos when viewing them in the Photos app. When you double-tap again, it will zoom out and return to normal view. This is quite useful if you want to zoom in on some details of the video you took and uploaded to the cloud photo / video service. Of course, you could do this with before photos so well that videos join the double-tap party.
Perhaps even more useful for some users is the ability to pinch to zoom and then scroll through the enlarged video to focus on a detail. Of course, this will work best on videos that are higher resolution, so you can see what you want to zoom in first. There is a video in the source link that shows how you will be able to “interact” with the video by showing the pinch-to-zoom feature.
Hopefully we can see more video features in Google Photos, like more editing tools, as well as just rotating and cropping them. And with the service about to stop being so unlimited, we still have a few more months to continue uploading videos without counting against our Google storage. It would be nice to be able to do something else with them instead of just playing and watching.
This Google Photos update appears to be a server-side change and is not limited to a particular version of Google Photos. So you will have to wait until you can double tap and pinch to zoom out the uploaded videos.