Videoclip timelines

I am wondering why some online video clips allow you to click on the
timeline curser ( in media player ) and let you fast forward or go to a
later point in the movie, and others will not let you do that and you must
watch it ALL. Like in the AVID tutorials.
http://www.adita.com/edition5.htm notice you can NOT fast foreward through
the movie. I also notice this in all formats, such as :wmv, mpg, mpeg etc.
Is this a function of a codec, or was it placed that way in creation.??

Anybody know??

thanks

A proper streaming server, which costs lots to set up and run allows you to
choose where you want to be in the movie, a normal server just downloads the
movie and you watch it from start to finish.

--
Graham Hughes
MVP Digital Media
www.myvideoproblems.co.uk
www.dvds2treasure.com
www.simplydv.com


"punchfast" <punchfast(delete this)@yahoo.com> wrote in message
news:tO_mf.44480$%i.11590@tornado.texas.rr.com...
>I am wondering why some online video clips allow you to click on the
>timeline curser ( in media player ) and let you fast forward or go to a
>later point in the movie, and others will not let you do that and you must
>watch it ALL. Like in the AVID tutorials.
> http://www.adita.com/edition5.htm notice you can NOT fast foreward
> through the movie. I also notice this in all formats, such as :wmv, mpg,
> mpeg etc. Is this a function of a codec, or was it placed that way in
> creation.??
>
> Anybody know??
>
> thanks
>