Upgrade to Pro — share decks privately, control downloads, hide ads and more …

SViOS Meetup: HTTP Live Streaming

jnwng
May 19, 2014

SViOS Meetup: HTTP Live Streaming

coursera deals with users all over the world; we want to share the important pieces on providing that experience on mobile, and some of the obstacles we overcame.

jnwng

May 19, 2014
Tweet

More Decks by jnwng

Other Decks in Technology

Transcript

  1. Turns out, mobile apps provide lots and lots of access.

    ! We had to answer a few questions though…
  2. Since all our videos are online we should be able

    to just play them no problem, right?
  3. Nope! Since all our videos are online we should be

    able to just play them no problem, right?
  4. 10 Every video over minutes must use HTTP Live Streaming

    (when played over cellular networks)
  5. Most frames in a compressed video are a diff of

    the first frame it started with…
  6. =

  7. =

  8. Our ideal cutoff is about 1.5x - 2.0x bandwidth before

    switching. 360p 540p 720p 1.5x 2.0x
  9. 06:02.000 --> 06:10.000 My laptop is in my pet alligator’s

    stomach. զత电脑ࠑ时ਖ਼ࡏզ宠෺鳄⻥鱼తᡙࢠཬɻ