Greetings.

I want to put up a website with instructive screencasts, and allow for people to add comments to them.

I would like use the Video for Everybody technique, partly because I dislike Flash and because it helps in a small way to move the web forward [while being backwards compatable]. I recognize that HTML5 is still in draft, and that support for it varies.

I do have some hosting space, and can run Perl, PHP, and Ruby on Rails applications, with a MySQL backend. I should mention that part of my working job involves running some web servers, and that I am a programmer by training (with only a limited familiarity with Perl and PHP, and none with Ruby).

I should mention why I don't particularly want to go with a video hosting site (like YouTube or Vimeo):

• Flash
• Video Resolution and Quality [I'd like to put up 800x600 videos]
• Videos promote a club that is not stricly non-profit [ie. may fall afoul of Terms of Service]
• I'm already paying for web hosting, and free video hosting comes with time and bandwidth limits
• I don't want there to be two locations where you can comment on the video

Now, having said all that, I'd be quite comfortable putting up my own HTML pages, except:

• that's so web 1.0! :) [ie. it does not allow for comments]
• I also want to do some blogging and possibly put up a wiki; the site will not be entirely screencasts

So, can anyone recommend a CMS (or Wiki, or similar application) that I can customise for this purpose?