1 KiB is addressed by exactly 10 bits. 1 MiB is addressed by exactly 20 bits. 1 GiB is addressed by exactly 30 bits. 1 TiB is addressed by exactly 40 bits.
1KB is addressed by 9.9657842846621 bits. 1MB is addressed by 19.931568569324 bits. 1GB is addressed by 29.897352853986 bits. 1TB is addressed by 39.863137138648 bits.
I know which one looks cleaner to me…
Bitrates complicate this, because they predate modern computing. It’s information theory. Radio signal transmission genuinely can measure in partial bits. And all bandwidth is described in plain metric prefixes.
So you can have an 8000 kbps video, lasting one second, and it weighs 976 KB.