3 ms·
"When we shipped the HTML5 player, we noticed that on average it took slightly longer for Facebook to load. By fixing several small performance regressions and
by ohitsdom 11y ago
"When we shipped the HTML5 player, we noticed that on average it took slightly longer for Facebook to load. By fixing several small performance regressions and making multiple micro-optimizations, we finally reached a level we felt happy with shipping."
The way that's worded, it sounds like Facebook with HTML5 video is still slower to load than it was with Flash. This is really surprising... Would love to read details on that. Do they mean loading a link to a video, or to the general News Feed?
- mwill 11y agoI'm fairly sure it means the entire page. I recently attended a talk given by Mike Magruder about (mobile) performance at Facebook, and a lot of it involved testing the impact of changes on the overall speed of the entire product, this uses the same language, ie referring to Facebook directly when talking about speed. Just a wild stab in the dark on the cause, but maybe a contributing factor is devices that wouldn't load Flash at all take a speed hit from trying to load HTML5 video and the supporting scripts, or maybe the browser doing more heavy lifting rather than offloading it to a plugin?