mp4 video will only play sound in flash cs4

Question

I'm using a flvplayback component in flash cs4. The sound from the mp4 video plays fine, but the video doesn't play. I don't know how to check the specific encoding of the mp4. I'm publishing to flash player 10 at 24fps.

Thanks

Answer 1

To see what codecs your video uses, you could try playing it in a media player application, like mplayer or Media Player Classic and seeing what that has to say about it...

Answer 2

I ended up opening the movie in iMovie and re-exporting to h.264. Video played fine after that.