I've got a couple mp4s on my classroom website and they won't play through Flowplayer. They work find on the computer. Any suggestions on what I'm doing wrong?

Here's a link:
http://adventureeducational.com/gallery/index.php?album=videos&image=quartering.mp4

I have 4 videos, all mp4. 2 play, 2 do not. Thanks for any help!

Try different export/encoding settings.
I'm not an expert but after some fiddling around with some conversion program, I got them working.

Flowplayer3 plays what flash plays. Flash has some issues with odd settings. Also mp4 is a container so make sure you use the right codec (standard is h462 currently). Also try standard sizes, codecs and audio settings (360p, 720p for video and 22khz/44khz for audio).

Thanks for the info. Is there a decent free converter? The one I'm using only shows h264. Is h462 a newer version of that?

Sorry, typo, I meant h264 of course! But important is also the size and frame rate and such:
http://en.wikipedia.org/wiki/Flash_Video#Media_type_support

Thanks again for the help!