Cutting/trimming movie playback problem

[TarsierSpectral]

I have a problem playing quicktime movies after I cut or trim them. So I have an original file, I open it in Quicktime Pro, trim it, save it. Then I go back and play it and it is fine. When I post it on the web, all I get is green screen, the movie just doesn't play. When I put the same movie before I trimmed on the website it plays fine.
Can someone tell me how to fix that?

Thank you
Tarsier

 

[TarsierSpectral]

Here is the info from the the Movie Inspector:

Live Stream:
Format: H.264 Decoder, 640x480, Millions AAC, Mono, 22.050 Mhz
Playing FPS: (Available while playing)
Data size: 395.20 MB
Data Rate: 398.78 kbits/s
Normal size: 640x480 pixels


THANKS