[mythtv-users] Global picture adjustment

[Thomas Baker]

I would like to adjust the picture settings (brightness/contrast/etc.) 
all at once, same setting for every channel.  This seems like possibly a 
SQL insert command, but I am not very familiar with Myth's database.  If 
anyone who has done this can let me know what command they used it would 
be very helpful and also, if i'm on the completely wrong track with this 
issue, some guidance would be appreciated.

Thanks,

tom