[chii]

> Once you're dealing with adaptive formats (DASH, HLS) containing multiple renditions (different bitrates) and/or codecs, it gets more complicated.

but why does it need to have all these different formats and bitrates?

[gruez]

>different formats

varying devices/platforms support varying formats

>bitrates

so some guy on watching on a 3G connection doesn't need to watch your 4K stream.

[chii]

Fancy features will cost more. But just a plain old video file on s3 works fine enough for must purposes.