I've read on reddit that Google still provides unlimited photos backup if you own Pixel 5a and lower. On rooted Android you can fake that and get free backup storage, but who wants to give pictures to Google?! I was thinking if it's possible or done by someone to create an environment on Docker by faking device info to access that free storage and backup rclone crypted files as images (by .jpeg fake extension or something)?
YouTube reencodes your uploads so I don’t see how could you decode your original data.
Because it encodes it visually
This is true, but I forgot to mention that the PoC I saw encoded the data into what is essentially a bunch of QR codes, which reduces the density of the data but beats the compression of Youtube.