Ultra-High-Definition Quality Experience with MPEG-DASH Streaming

http://www.bitmovin.net/blog/2015/05/ultra-high-definition-quality-experience-mpeg-dash-part-1/

by slederer • 11 years ago

10 23 11 years ago

est3• 11 years ago

DASH is cool in terms of technology and cost saving, but as end-user experience, it's super bad. I just wanna constant quality, full length video buffered to my local and after that I start watching uninterrupted! Who the fuck want to watch a 720p video and then BOOOOOM 240p. It's really frustrating.

hroi2• 11 years ago

Some people would prefer scaled down quality instead of stuttering when watching eg. live streams or on-demand movies (and not have to wait for download to finish).

est3• 11 years ago

For live streams, yes, DASH might be super useful.

For on-demand movies, I'd like to it to buffer in advance to a sufficient time length, but don't stutter anymore after that!

Hell I would rather lag for 1 minute for live videos instead of DASH.

I think it boils down to personal habits, would you endure constant small problems with quicker progress, or would rather suffer at the start and enjoy a smooth ride afterwards.

rasz_pl2• 11 years ago

and other people live outside of third world US internet bubble and have access to modern networks with no data caps and decent speeds.

sp3325• 11 years ago

That's not streaming, that's a download.

est3• 11 years ago

Watch a partially downloaded video while downloading is called streaming.

rasz_pl2• 11 years ago

afaik nothing stops you just downloading highest quality DASH stream, I do it with YT everyday.

slederer3• 11 years ago

If you use a good player with a good adaptation algorithm, it will not switch from 720p to 240p ... of course poor players will do that. But a good player implementation will rather switch from 720p @ 3 Mbps to 720p @ 1.5 Mbps if the bandwidth decreases ... so the quality difference is really limited but the video continues to play without a problem. we've a lot of demos where you can try it out yourself at http://www.dash-player.com/demo as well as http://www.bitcodin.com/live-streaming/

reamworks• 11 years ago

Is it better than Pied Piper, which is lossless?

hroi2• 11 years ago

A more relevant comparison would be HLS, Apple's HTTP Live Streaming tech, which works really well but is not very widely supported.

jawngee• 11 years ago

There are over 800 million devices that support it.

asendra• 11 years ago

Works really well, yes, but it has considerable latency for real time video.

slederer3• 11 years ago

Apple's HLS and MPEG-DASH share the same design principles. One big benefit of MPEG-DASH is that it is supported natively within HTML5 using the HTML5 Media Source Extentions. However, today HLS and MPEG-DASH are used in common.

aeturnum• 11 years ago

DASH is more a protocol to make many quality levels available in a single stream in a standard way. You could add a Pied Piper track to a DASH stream easily.

Ultra-High-Definition Quality Experience with MPEG-DASH Streaming

Related Stories