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Firefox 3.5 Beta Boosts Open Video Standard
bmullan writes "Dailymotion, one of the world's largest video sites, announced support for Open Video. They've put out a press release, a blog post on the new Open Video site, and an HTML 5 demo site where you can see some of the things that you can do with open video and Firefox 3.5. (You can get the Firefox 3.5 beta here.) Dailymotion is automatically transcoding all of the content that their users create, and expect to have around 300,000 videos in the open Ogg Theora and Vorbis formats."
Opera has supported for a while now. Stupid site says I'm not allowed to open it cause I'm not using Firefox.
Hmm, does this seem familiar to anyone?
But Theora has come a long way since then, coming much closer to x264's fidelity.
You must have missed the retraction that was done when it was shown that they were calculating PSNR wrong for x264. Theora is nowhere near the quality of even a low-range h.264 codec.
'Publishing' the graph like that drew well-deserved scrutiny and unfortunately our own data was also off (although by considerably less). ffmpeg had another bug we didn't know about which caused it to mishandle the colorspace on x264 output, so the x264 PSNR value was too low by 1-4dB. Greg fixed the error in the data collection and immediately set about collecting new measures:
Theora is great for embedded devices like cell phones since it is "cheap" when it comes to cpu cycles. For top quality video, Dirac should be used. I wonder when Firefox, Opera or Konqueror will have native support for Dirac.
Safari supports the HTML5 video tag, but doesn't include Theora support because Apple considers it a patent lawsuit magnet.
Ummm... Apple doesn't include it because it REALLY doesn't want a free video/audio codec becoming widely used.
While I am happy to see that Mozilla and Firefox are setting the standards, let me remind readers that previous evaluations have found the Theora encoders inferior compared to contemporary video codecs. In particular, the reference Theora encoder has inferior picture quality and network frame rate control as of 2008.
The important thing is that we move toward open standards, away from proprietary solutions, because open standards allow us to do more cool stuff with them.
Remember RealPlayer? Remember all the bitching about what a piece of crap it was? People had to have it, even though it sucked, because a lot of content was only available in RealAudio format. Today, RealPlayer is all but gone, and you can play the same type of content using whatever software you like. Why? Because when Apple added Podcast support to iTunes, Podcasts suddenly became hugely popular, and virtually all of the content providers that used to offer only RealAudio now offer Podcasts instead. This means that users are free to choose whatever software they want, and competition will drive the software to improve.
In the same way, if web sites move away from Flash video players to using HTML5's video tag, it will mean users will no longer be dependent on Adobe's plugin to access the content. Unfortunately we still have patent issues to deal with; Ogg is unencumbered, but better quality codecs will be supported by most browsers, and if we can get content providers to get used to the idea of making their video content freely available (instead of wrapping it up in Flash), there can be competition among codecs too.
It's not a perfect world, but it's one step closer.
$x='S24;r)>63/* h@<5+oZ)32"5cz';$me='phroggy'x$];
$x=~y+ -xz+\0-Tx+;print$_^chop$me for split'',$x;
3 dB is a factor of ~ 1.41 times.
A factor of two is 6 dB.
Depends on what your working with. Just straight amplitude, 3dB = double. If you're working with power, then 6dB=double.
But.. audio uses the amplitude scale.
What does dB even mean in this context?