[streaming] Re: IP TV

[Martin Forget]

if it is only 1 ntsc pixels line at the top that appears with black  
and white noise, it might be the overscanning features...

catv channels have a standard "crop" feature that is called  
overscan...   but since it's officially the tv (or settop)'s job
to perform the overscan, commercial encoders encode the full image.


if this is the case,
either :
on the optibase config where you might be able to enable an overscan  
option which will crop the image at encoding time
or
in vlc, set a crop filter in the output chain and cut off couple of  
pixels on each side and you should be fine.

-martin


On 23-Jan-07, at 1:36 PM, Daniel Wells wrote:

> We are in the process of replacing our cable TV infrastructure here  
> on campus to an IP TV infrastructure.  We have implemented hardware  
> from optibase to convert our TV feeds to h.264 transport streams.   
> We plan on using VLC and an option for viewing the feeds.
>
>
>
> However when using VLC we get a bit of garbage at the top of the  
> video feed.  It would seem that this garbage is caused by the  
> closed captioning data that is embedded into the feed.  It seems  
> that VLC does not yet handle these CC streams (based on what I have  
> read).  Is there any way, using vlc, to at least filter that out so  
> we can present a clean video using vlc?
>
>
>
> Sincerely,
>
>
>
>
>
> Daniel Wells
>
>

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