To answer your question, and state what is in my opinion the bottom line.
Unless you have a real requirement to use html5's video format, (you are targeting the iPad, would be an example of this) continue to use the flash player and flv's/swf.
The use of the html5 video tag would not enable swf's to be used without the flash player, as it does not support the the swf file format, for more info on the html5 video see - http://en.wikipedia.org/wiki/HTML5_video.
HTML 5's video tag display H.264 encoded video?
The <video> tag just simplifies the markup for including video in a web page. No more <object> and <embed>.
The type of supported video depends on the browsers and their codecs.
Re: H.264 support:
Firefox: not sure
Bit of a messy state of affairs here, big company politics aside, HTML 5 is going to be the future of the web,, especially now that XHTML 2 has been binned by W3C, even if HTML5 takes a while to standardise, it's time is coming, and you are right to want answers.
My concerns are more along the lines of the corporate interests and politics. Both Apple and Microsoft have influence over what HTML 5 will become, and I do not envy the task of the backend chaps on this.
remember Microsoft have alot to lose if HTML 5 becomes what it promises. as a result they will only ever offer minimal support for it. Flash therefore will always have a place on desktops around the world, even if it is side by side with Silverlight.
Just a thought: - If Google created an online HTML 5 WYSIWYG, then things would change, especially as their Android setup is likely to take top spot in the next couple of years.
remember Microsoft have alot to lose if HTML 5 becomes what it promises. as a result they will only ever offer minimal support for it.
As far as I can see, Microsoft is fully engaged in making HTML5 mainstream.
"There’s been a lot of posting about video and video formats on the web recently. This is a good opportunity to talk about Microsoft’s point of view.
The future of the web is HTML5. Microsoft is deeply engaged in the HTML5 process with the W3C. HTML5 will be very important in advancing rich, interactive web applications and site design. "
General Manager, Internet Explorer
HTML 5 support to a degree... my understanding is that HTML 5 should and could have been a one for all environment, and for the most part it is true, Microsoft have some issues over the Video codecs, so straight away, we need a hack to switch content accordingly. We need to double save video content (great)...
then, if creating seemless content for the web was easy, alot of us would be out of a job.
can you see a day when content will look and act the same across the different boards?
I was quoting Dean :-)
I suggest we reserve judgement until HTML5 and IE9 arrive rather than jumping to potentially unwarranted conclusions.
teach me to skim and not read...
it is a tough one at the moment, and early days. As it stands we still have so many corporate clients that are on win XP, this makes the HTML 5 earning curve less urgent.