Hi!

> From: Matto Marjanovic <[EMAIL PROTECTED]>
> 
>  (Incidentally, the original reason for NTSC setup --- a 7.5 IRE difference
>  between 'black' and 'blanking' levels --- was to make absolutely sure that
>  the electron gun in the TV tube was turned off during horizontal retrace,
>  even if the circuitry was a bit off.  It made the whole viewing experience
>  that much more robust at the time.)

        Lots of weird stuff in the video world hails from the same era - the
        30000/1001 frames/sec instead of 30 frames/sec is another "feature"
        we're stuck with.

        Question about the setup though.   I've been reading the forums
        off at forum.canopus.com and get the feeling that the 'setup' switch
        default is incorrect for US users.   The units are assembled in
        Japan which is NTSC-land but does not use the 7.5IRE setup.   

        I'm going to change switch 2 on my Canopus ADVC100 from OFF to ON
        tonight and process a movie to see if the DVDs have better contrast
        (black level).

        But for those I've already captured and don't want to spend the 6 or
        8 hours redoing is it possible to (at least partially) compensate
        in software for captures made with the wrong 'setup'?

        Cheers,
        Steven Schultz


-------------------------------------------------------
This SF.net email is sponsored by: Etnus, makers of TotalView, The debugger 
for complex code. Debugging C/C++ programs can leave you feeling lost and 
disoriented. TotalView can help you find your way. Available on major UNIX 
and Linux platforms. Try it free. www.etnus.com
_______________________________________________
Mjpeg-users mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/mjpeg-users

Reply via email to