Some mp4's not playing

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:

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


  • fretzl Administrator, Developer
    Try different export/encoding settings.
    I'm not an expert but after some fiddling around with some conversion program, I got them working.
  • acrylian Administrator, Developer
    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?
  • acrylian Administrator, Developer
    Sorry, typo, I meant h264 of course! But important is also the size and frame rate and such:
  • Thanks again for the help!
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