[mythtv-users] Digital Signal decoder

[Raymond Wagner]

On 3/9/2011 09:57, quecumber256 at comcast.net wrote:
>
> I would like to view an incoming or recorded digital video in raw 
> digital form, so I can look for specific digital flags.
>
> For example: I'm sure you have seen those stupid pop-up ads that 
> usually appear on the bottom left hand side of your TV when a TV 
> program resumes. I consider this unnecessary noise and would like to 
> filter it out. Therefore, I would like to be able to view the program 
> in raw digital form so I can see if I can spot thoses flags and filter 
> them out.
>

No.  I don't know what you're talking about.  You could be referring to 
one of two things.  If you're talking about those station logos and 
other graphics from the broadcaster, those images are cooked into the 
video itself, and cannot be removed without doing some very difficult 
speculative reprocessing of the video.  If this is something some 
special popup your cable box displays, then it is receiving special cues 
from the cable company, and rendering that locally.  No third party 
device would ever see that popup.

I would absolutely LOVE if the ATSC spec actually supported such 
graphics independent of the primary video stream.  That way, weather 
warnings and news tickers could actually be ignored, rather than 
wrecking a recording you're watching six months after the fact, with 
information no longer of any relevance.
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