Video Compressor 4+

Very useful for quickly compressing a video. Also useful to be able to lower the resolution of videos for those instances where sending videos where the audio is more important than the high resolution
There’s a couple of caveats at the moment, though:
1) you lose a video’s metadata, so the date and time stamp along with iOS location of where the video was taken will get lost. This might well be something you don’t want to lose in your Apple photos app.
2) if you have cropped a video, or edited, then you will end up with a compressed version of the reverted video and not the intended version of the video.
Losing these elements make it a less desirable option for use as a means of saving space on your phone when you like to retain the data that comes with your photos and videos on an iOS device.

I bought the highest storage iPhone available because I have a lot of videos. I am always, always running out of space. Tried this app and it basically halved the size of my whole library OR you could say it doubled the size of my phone memory.
With a VERY fussy eye and the original video you can see the difference. I haven’t exported a compressed video to watch on a tv but for watching on phone screen the quality is still very good. I’d say you lose 7% quality for 50% filesize.
The batch convert worked really well, except you have to keep touching your screen to keep it awake or the whole queue fails and have to start over