[pvrusb2] flicker at the top

[Mike Isely]

On Thu, 21 Dec 2006, Keith Moyer wrote:

> > Sorry for asking so many questions... but I noticed that after a while
> > (1-2 min), there is a flicker at the top of the picture.  It is
> > blocky, and extends maybe to 15% of the picture from the top, and
> > usually stops in mid-line.  I am using mythtv, tried different
> > settings (width x height, bitrates), but it always shows up.
> 
> I've also experienced this, but only when changing channels rapidly.  I
> assumed it was the following error on the main pvrusb2 page.
> ---
> "For either type of device, repeatedly rapidly changing channels seems to
> result in video corruption which persists until the device is streaming is
> completely stopped then restarted. Some people seem to experience this,
> others seem not to. I have been unable to find a pattern to this, except to guess
> that the temporary disruption in digital data to the encoder during the channel
> change can sometimes confuse the encoder."
> ---
> I have a 24xxx device, and can reproduce this at will (exactly as Tamas
> described).  It sounds like it's already been looked into, but if more recreates
> would help, I'm game.  I haven't made the move to linux on my main pvr box
> (still working on the girlfriend acceptance factor), so it hasn't been a major
> problem here, but I'd like to help straighten it out if possible.
> 
> - Keith
> 

I've got some time-off from work coming up (for the holidays, 
obviously).  I plan on spending some of that time to chase this problem.  
Right now, this is the biggest and most annoying open issue in the 
driver.

  -Mike

-- 
                        |         Mike Isely          |     PGP fingerprint
     Spammers Die!!     |                             | 03 54 43 4D 75 E5 CC 92
                        |   isely @ pobox (dot) com   | 71 16 01 E2 B5 F5 C1 E8
                        |                             |