I can recommend the app I used to convert MOV AVI to MP4. As far as I know WALTR app is comparatively new and easier than others. It converts at fast speed and with original video quality. I think it’s worth using! ..especially for those, who don’t want to waste time 🙂 Here is some info https://softorino.com/waltr/best-converter-avi-mp4-mac-windows Hope it’ll help you)