this post was submitted on 12 Aug 2024
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short term storage of uncompressed high resolution data
I don't think microSD has the write speed for that, might be more useful for HD surveillance cameras
Uncompressed 4k stream @ 30fps and 24bpp would be 5.7 GB/s. The top regular SD card speed, UHS-III, maxes at 0.6 GB/s. SD Express, where a PCIe lane is added, goes to 3.9 GB/s.
So, yeah, going to need at least some compression. Good news is that just a little compression can go a long way.
Even full 4K HDR Blu-ray rips come in at about 30GB an hour.
That's 500MB per minute which just about fits in the 10MB/s of UHS Class 1.
I would consider those fairly standard these days. You'd have to have picked an extra shitty AliExpress special to not have your card meet that.
Yeah pictures and videos is all I can think of. I am no photophile but I assume some small digital camera benefits from storage of the micro variety. Has me thinking of the 2015 movie Victoria, 140m straight, one shot, no cuts, and actually a good movie, pretty amazing stuff.