My phone takes pretty good videos but the filesize is absurbd. Using handbrake on desktop can make them far smaller at almost the same quality but my phone storage fills up rather fast and this requires me to move them off device.
Is there an app which keeps track of non transcoded videos in my camera folder and can transcode them on my phone while I am asleep?
Seems like your phone would get really hot and rapidly degrade the battery, especially while on charger overnight. It’s not designed for continuous workloads.
Phones can rapidly compress video on the fly because they have dedicated silicon just like video cards in PCs. That’s not why the files are large. Why not just shoot at a lower resolution and frame rate?