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First Installment of Xiph.org's 'Digital Video Primer For Geeks'
Ignorant Aardvark writes "Xiph.org just released the first installment in its video series 'A Digital Video Primer For Geeks,' which covers digital audio and video fundamentals. The first video covers basic concepts of how digital audio and video are encoded, and does so in an understandable fashion. The video is hosted by Monty, the founder of Xiph.org (the people who brought you Ogg), and explains a lot of concepts (FourCC codes, YUV color space, gamma, etc.) that many watchers of digital video have long been exposed to, but don't quite understand themselves. The intent of the video series (in addition to general education) is to spur interest in digital encoding and get more free software hackers involved in digital audio/video."
For what could be very stale subject matter Monty has done an excellent job of giving effective examples that engage and entertain.
Why does it have to be "for geeks"? Why can't it just be for people who are interested in digital video? I guess people who bite the heads off chickens at carnivals need their own special perspective on the topic, but I can't imagine that those people constitute a very significant market segment when it comes to video.
... and then they built the supercollider.
I wish they'd just written an ebook, I think sometimes people lose sight of trying to impart useful information, and get wrapped up in making the information "fun and accessible." You could probably get twice the amount of information reading in an hour rather than watching someone mug in a video -- making it "entertaining" will only make the information more accessible to people who are likely never to use it.
PS. Available as OGG and WebM. Is Xiph working for Google now?
Don't blame me, I voted for Baltar.
Xiph.Org has been pushing for unencumbered codecs for over a decade and contributed to the creation of webm.
It might be more fair to say "WebM? Is Google working for Xiph now?"
Yes. Yes they are, and it is so sweet. Don't be evil sill means a little something sometimes.
As a geek who previously spent all his time keeping *nix and windows systems running happily together, this was enough information to give me a curiousity spike, and enough information to google around.
Great video, and I hope there is more to come. Although I suspect the next video will be much less informative as I will be much more informed.
Good job Xiph.
As I understand it, this is the first in a series, and explaining the raw data formats is the place to start. I assume compression algorithms will be covered in a followup. Or many followups.
For someone only partially familiar with video and audio encoding, this was a particularly clear and informative video. It also serves as an excellent example of the direction more Open Source efforts need to take. Mini lectures that bring some human explanation.
Your comment about an ebooks and wikis, is well taken and follow-ups to "flesh out" the information would be an extremely helpful next step to break down the various issues under discussion, as well as provide further instruction on how specifically to address various issues needed to bring the user community "up to speed". This is excellent in that it makes clear that although challenging this kind of knowledge need not be inaccessible.
The organization would do well to provide more mini-lectures to expand on each of the topics in greater detail and follow it up with outlined summaries, tutorials and soft-ware coding and details about hardware choices that are available and supported on open-source systems. This would be helpful to everyone as it would give developers and a more general class of users more power in the marketplace, as new projects develop and bring with them new communities of enthusiasts and students. For example, those interested in higher resolution video or high speed video, or audio-video interfaces could each bring critical mass to more specialized areas that in turn could stimulate interest by hardware vendors in meeting the specific needs of such users.
Given that the closed source, proprietary society model is rapidly taking over everything else, those who want a modicum of freedom expression and fair markets, open software has the potential to do much to serve under-appreciated, under-served, and under-funded audiences the world over. Thats good for everyone, especially in a world where it grows easier and easier to be discouraged.
Really a great open source contribution. My congratulations to Monty and the rest of the crew at Xiph.org.
It would have been three hours long and covered half as much stuff it they took the time to explain every detail. Checkout the wiki for pointers to tons of background material.
He should seriously consider doing this for a living. One of the best lectures I have ever seen. I knew 99% of this stuff already (and more), but the presentation was _flawless_.
And I'd love to watch them, but you decided to only post them in your own, unpopular and inefficient codecs/containers, and none of my media players support it. If they are trying to get people interested in free/open video encoding, they shouldn't post in a format that assumes the audience already cares about it. Won't be watching. Assholes. (Yes, I know they won't read this).
I hate grammar Nazi's.