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Is there an app which can transcode all big videos on my phone on a schedule? (lemmy.ml)

submitted 5 days ago by geneva_convenience@lemmy.ml to c/asklemmy@lemmy.ml

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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?

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[–] geneva_convenience@lemmy.ml 4 points 5 days ago (1 children)

Was hoping to do it on device. It will likely take ages but that does not matter much as it can be done overnight.

Camera apps prioritize speed over encoding size as they do not have time nor resources to compress the footage well while recording. Nor should it as it can be done afterwards.

[–] deranger@sh.itjust.works 6 points 5 days ago* (last edited 5 days ago) (2 children)

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?

[–] BearOfaTime@lemm.ee 1 points 5 days ago

Plus I suspect the cpu cost of transferring the files is far lower than transcoding.

I keep 100's of gigs in sync across multiple phones and devices, and ST never causes the phones to warm or show significant battery use.

[–] geneva_convenience@lemmy.ml 1 points 5 days ago* (last edited 5 days ago)

Possibly it could not use 100% of the CPU so the phone does not go up in flames and it runs efficiently.

Most videos are large because the compression is poor. I was able to do some extreme compression of the video with far smaller size and it still looked great using Handbrake. But good compression takes time and far more calculation than fast compression.

Recording in higher res and then compressing works far better than recording in low res. I can even get smaller 4k compressed AV1 videos than the HEVC 1080p videos if I select a lower res.