I have a friend who’s a singer. He showed me how much storage 1 4 min music video took. 40 min per camera, 3 cameras, 4K. Unedited raw footage came out at ~2.5TB. It’s just insane to me. My PC has 1TB of storage.

  • vfsh@lemmy.blahaj.zone
    19·
    2 days ago

    4K = 3840 x 2160 pixels = 8,294,400 pixels per frame

    Assuming 8 bits of color depth (lowest common depth) = 66,355,200 bits per frame (66MB)

    At 24fps (again, low end as mentioned by another commenter) = 1,592,524,800 bits per second (1.5GB)

    95.5GB per minute of footage per camera, assuming literally no compression.

    95.5GB × 40 = 3.8TB × 3 cameras = 11.4TB

    Raw uncompressed video takes up a LOT of space.

    (Yes I used 1000 instead of 1024 for convenience)

    • BestBouclettes@jlai.lu
      01·
      2 days ago

      Well, TB, GB, MB are decimal (powers of 10). TiB, GiB, MiB are binary (powers of 2). So that’s correct.

      • carl_dungeon@lemmy.worldEnglish
        3·
        2 days ago

        Yeah but that’s a BS measure they created decades later. We never used MiB in the 80s and 90s.

        To clarify, it was always powers of 2 in the old days.

        • blackstrat@lemmy.fwgx.uk
          1·
          2 days ago

          Kilo and mega prefixes have been used for far far longer than computers have been around and they mean 1000 and 1000000. It’s only in computing where these prefixes were corrupted because they were deemed “closed enough” and caused confusion because people expect the terminology they use everywhere else to also apply to their computer.

          • carl_dungeon@lemmy.worldEnglish
            4·
            2 days ago

            You’re not wrong- but when the change happened, it seemed to be around the time HDD manufacturers started taking flak for selling high capacity drives that didn’t match formatted capacity by larger and larger margins. OS level files sizes were always 2^n - it was a real PitA when Apple switched to base 10 for gui size reporting. I believe terminal utilities still measure file size in 1024 bytes.

            • blackstrat@lemmy.fwgx.uk
              1·
              2 days ago

              Formatted size will always be smaller than raw size as you are storing a file system and there are lots of different ones with different space requirements.

        • Yardy Sardley@lemmy.ca
          1·
          2 days ago

          Except the marketing in this case is actually more accurate. Using ‘kilo-’ to refer to 1024 of something is a straight up misnomer. The Ancient hackers really cursed us with an ambiguous convention for counting bytes.