| V-r0cK said: Does anybody know an approx. file size of a 4K video and how much bandwidth it takes to stream? |
Nah, that depends on so many variables. Quality, codec, fps, sound etc. It cannot be answered in a simple way.
Some googling (http://www.iphonehacks.com/2015/09/iphone-6s-4k-video-space.html) says 1 minute 4K at 30fps takes on the iPhone (with it's encoder probably) 375MB. Another source (https://gopro.com/support/articles/hero4-black-recording-time-in-each-video-setting) has recording for Hero at 4K and 30 fps at 60 Mbps.
Wikipedia says that with HEVC-codec 4K-streaming should be possible with 20-30Mbps: https://en.wikipedia.org/wiki/4K_resolution
| V-r0cK said: I've read that streaming an HD episode on Netflix takes around double the size of bandwidth than it would to just "download" the episode. |
Streaming may have some overhead. Due to it's realtime-nature it needs to switch quality if bandwith is changing and better sends packets another time if it isn't sure the receiver got it. But double as much? I very much doubt that.
| V-r0cK said: As convenient as streaming is, there are many countries that doesn't have the luxury of having a large/unlimited bandwidth at an affordable price. |
Well, downloading surely has it's advantage as you can download the movie for the evening in 24 hours instead of 2 for streaming. On the other hand most content deliverers don't want to give away their stuff, so they choose streaming.
