Solving Different Problems • Hacker News Board

Re: Solving Different Problems

#21

Post by 0x0 » Sun, Aug 05, 2012, 10:03 AM UTC

antihero wrote: post #12

ebassi wrote: post #5

Earlier quoted context omitted.

not every video frame is encoded in RGB. actually, very few transports use that. the in-memory layout of a YUV-encoded frame is different than the one of a RGB one. it needs conversion, which implies an intermediate copy, as well as traversing a buffer that can go up to 1080 rows. most video players (and Flash on Windows and MacOS), these days, use shaders and multi-texturing to do that conversion on the GPU; it remo…

Why don't they encode the elements to YUV once, and then flip to YUV (so not needing to convert each time), as opposed to converting the video to RGB?

I _think_ you lose a _lot_ of color going from RGB->YUV, also you are just replacing one expensive color space conversion with another.

Re: Solving Different Problems

#22

Post by luriel » Sun, Aug 05, 2012, 10:04 AM UTC

pi18n wrote: post #13

zacharyvoase wrote: post #8

Wow. A tip to anyone reading this: if you ever find yourself explaining away poor—nay, pathological—performance with anything other than ‘we made some mistakes in the past and we’re doing what we can to correct them’, please take a good hard look at yourself and consider exiting the software industry. That’s all I have to say. Edit: that wasn’t all I had to say. > What about Mac? I’m not sure but my Mac colleagues ha…

Doubly so if your product crashes even half as often as Flash. That they cannot seem to code for stability doesn't give me any confidence in their ability to code for speed. I heard that they refused to work with Apple to improve its performance on Mac, and that was a core reason why they got excluded from the iOS platform -- searching for this I came up with an explanation directly from Apple: "Symantec recently hig…

> That they cannot seem to code for stability doesn't give me any confidence in their ability to code for speed.

Much more importantly, it doesn't give me any confidence in their ability to code for security.

Re: Solving Different Problems

#23

Post by vacri » Sun, Aug 05, 2012, 10:22 AM UTC

jrockway wrote: post #4

the internet at large has unanimously declared that it appreciates the Flash Player’s solution to the video problem Really? The Internet at large is able to unanimously declare things, and one of those things is that it appreciates Flash's solution to the video problem? Tell me more...

To be fair, when the article was written in January 2010, the only widespread solution to video in browsers was flash.

Re: Solving Different Problems

#24

Post by rdsubhas » Sun, Aug 05, 2012, 10:23 AM UTC

tl;dr - we accidentally a whole software video decoder to show some circles and rectangles at the bottom. and so that you can haz internet when playing video.

Re: Solving Different Problems

#25

Post by TazeTSchnitzel » Sun, Aug 05, 2012, 11:24 AM UTC

vacri wrote: post #23

jrockway wrote: post #4

the internet at large has unanimously declared that it appreciates the Flash Player’s solution to the video problem Really? The Internet at large is able to unanimously declare things, and one of those things is that it appreciates Flash's solution to the video problem? Tell me more...

To be fair, when the article was written in January 2010, the only widespread solution to video in browsers was flash.

Same with audio, which is why notification sounds on Facebook and such were always done with Flash (not now).

Re: Solving Different Problems

#26

Post by alvarosm » Sun, Aug 05, 2012, 11:24 AM UTC

Ridiculous. YUV->RGB conversion + drawing a couple of things is negligibly cheap even if done in CPU. What a pathetic excuse.

Re: Solving Different Problems

#27

Post by jrockway » Sun, Aug 05, 2012, 11:32 AM UTC

vacri wrote: post #23

jrockway wrote: post #4

the internet at large has unanimously declared that it appreciates the Flash Player’s solution to the video problem Really? The Internet at large is able to unanimously declare things, and one of those things is that it appreciates Flash's solution to the video problem? Tell me more...

To be fair, when the article was written in January 2010, the only widespread solution to video in browsers was flash.

Wasn't Netflix Silverlight then?

Re: Solving Different Problems

#28

Post by its_so_on » Sun, Aug 05, 2012, 11:41 AM UTC

If only there were a way to let a plugin give VLC a URL to open and overlay over a specific part of your screen until you close the tab.

Nah, that's crazy talk.

Who would want to watch a high-quality hardware-accelerated local video that gets deleted when you close the tab, from the familiar interface of a web browser? Crazy talk, crazy talk.

Re: Solving Different Problems

#29

Post by lazugod » Sun, Aug 05, 2012, 11:45 AM UTC

TazeTSchnitzel wrote: post #25

vacri wrote: post #23

Earlier quoted context omitted.

To be fair, when the article was written in January 2010, the only widespread solution to video in browsers was flash.

Same with audio, which is why notification sounds on Facebook and such were always done with Flash (not now).

Facebook has sounds?

Re: Solving Different Problems

#30

Post by TazeTSchnitzel » Sun, Aug 05, 2012, 11:48 AM UTC

lazugod wrote: post #29

TazeTSchnitzel wrote: post #25

Earlier quoted context omitted.

Same with audio, which is why notification sounds on Facebook and such were always done with Flash (not now).

Facebook has sounds?

Maybe you're using noscript. If you receive a chat message and you're in another tab, a sound plays.