Slashdot Mirror
Domain: v2v.cc
Stories and comments across the archive that link to v2v.cc.
Comments · 8
-
Re:Complaining About an Unfinished Spec?
This could be worked around by putting this data in the header somewhere.
AVI has such an index. Matroska (wrapper used by WebM) has an index. Ogg does not, but unless you're on a satellite link, four HTTP seeks won't kill you.
There are a few misconceptions here. WebM isn't Matroska, it's a Matroska subset with a few (important) differences. See http://www.webmproject.org/code/specs/container/ for details. Ogg has an index which (similarly to Matroska) is optional. See:
http://www.xiph.org/ogg/doc/skeleton.html
http://pearce.org.nz/video/indexed-seek-demo.htmlffmpeg2theora includes a Skeleton track with index by default since version 0.27:
-
Re:This is why Flash must die.
They need to sort out the HTML5 subtitle standard, and someone needs to actually support it.
They need to sort out the cue points standard, and someone needs to support it. (No, events fired every X ms or so is not enough)
What's wrong with the jquery srt plugin?
It ties you down to one javascript framework - its really something that should be provided by the <video> element itself, and handled by the player, not by external javascript. Having to handle subtitles externally is like having to handle the audio separately.
They need to eliminate cross browser issues with overlaying html over the video stream.
What issues?
I have seen issues where, although rendered above the video stream, links are not clickable, and other issues where components that should be rendered above are infact rendered below the stream.
-
Re:This is why Flash must die.
They need to sort out the HTML5 subtitle standard, and someone needs to actually support it.
They need to sort out the cue points standard, and someone needs to support it. (No, events fired every X ms or so is not enough)
What's wrong with the jquery srt plugin?
They need to eliminate cross browser issues with overlaying html over the video stream.
What issues?
-
Re:Awesome stuff
I was looking for somewhere that I could make videos in Ogg Theora format and upload them. I had tried a combination of archive.org and theorasea.org but it was quite terrible really
Your own web host, perhaps?
-
Theora is much more flexible than VP3!Theora is not VP3. The format is *much* more flexible and the 1.0 decoder supports all of it. Which means that in the next years we will see many improvements in the quality, with the same bitrate and 100 backward binary compatibility, just enhancing the encoders.
See:
http://web.mit.edu/xiphmont/Public/theora/demo5.html
http://v2v.cc/~j/ffmpeg2theora/ffmpeg2theora-0.22-thusnelda.exeAnd this is only the start. Just look at what the Lame encoder was able to do with the MP3 format in quality.
-
Theora still lacks good creation software
I've put more Theora videos on Wikipedia commons than almost anyone else. The problem is, ffmpeg2theroa (which is the most direct way of generating theora videos, by transcoding them from other video formats) is not all that great. I've tried to get three features included in ffmpeg2theora with no success at all. The developers don't have bugzilla and don't respond to email. (For anyone interested, those three features are: [1] a command line option to use whatever resolution the target video uses rather than manually specifying it [2] the ability to rotate by 90 degrees, and [3] because many cameras (including mine) tend to set a couple of bits wrong when creating quicktime movies, ffmpeg2theora need to be less picky about following certain file specifications. Right now, it errors out without producing any output)
So yes, this is good news. But until there's more content to actually view using this - and that necessitates better production-side software - it's not all that big of a deal.
-
Re:Ummmm.....
It's comparable to H.261 in performance
That's only according to some guy from Nokia, who clearly has a massive bias.No one actually knows what the patent status is
On2 had sold VP3 licenses for years, as well as for newer versions (VP4/5/6/7) based on many of the same methods as VP3. Those codecs have long been licensed, and widely used by very large companies like AOL (Nullsoft TV, AIM Video), Macromedia, Adobe (Flash v7), BBC (QuickLink field broadcasts), eBay (Skype Video), and no doubt many many more. The fact that no patent trolls have come out of the woodwork yet is pretty damn strong evidence that Theora is in the clear.No one even uses Theora for anything
That's pretty much how all video codecs start out... Theora is still in beta, yet there is quite a bit of content from sites such as http://v2v.cc/Why do we need video requirements for text markup?
For the same reason we need image requirements for text markup. In fact HTML already has a specified video format: raw MJPEG, it just happens to suck.
I long wished MPEG-1 had been specified for web video (to supersede MJPEG) when it's patents had first expired, but it never happened, no doubt because some many companies have vested interests in getting those patent license fees.
Dolby Labs does the same thing whenever a video standard is being defined... they throw a good amount of money in bribes around, and make sure the standards (in all those countries that have software patents) include only Dolby, despite MP2/Musicam being as good, and trivially easy to include as an alternative. So while our European friends can put free MP2 audio on their DVDs, and in their DTV broadcasts, in the US we are absolutely required to have a Dolby Digital/AC3 audio track. -
Re:um they already are doing it
v2v, a grassroots news network associated with Indymedia, is currently doing this.