[mythtv-users] Trying again: Bad studdering when video fades toblack, or in all white frames

[Buchanan, Paul]

On Thursday, December 04, 2003 11:59 AM,
mythtv-users-bounces at mythtv.org wrote: 
> Hey Tim,
> 
> I haven't tried messing with the resolution settings yet, but I'll
> play around with that.  I'm using the svideo from my directv receiver
> as well, so 
> it sounds like we're the same on that.  This is definitely a new
> problem for me though as I never experienced this prior to version
> .12. 
> 
> I can't remember if it was you or someone else, but I've also noticed
> that adjusting the contrast or brightness way down will make the
> studdering during black or white screens much worse.  Turning it up
> makes it a bit better, but I don't want to distort the image too much
> to just try and make it stop. 
> 
> You want to really see it studder watch the LBX(?) version of the
> matrix on PVP.  Really dark programs (expecially with the widescreen
> format black adding to it) pretty much studder all the way through.
> 
> Recap of specifics:
> No studdering with using mplayer to watch recordings that myth has
> made. 
> No studdering using mplayer to stream directly from /var/video
> Happens regardless of whether I'm watching live tv, watching a
> recording, or doing some combination of the two.  (Only when using
> myth frontend as the player).
> 
> joshua
> 
> On Thu, Dec 04, 2003 at 09:52:29AM -0600, Tim wrote:
>> I still don't have a real answer, just another observation from my
>> setup. It seems to be somewhat capture resolution dependent also.  I
>> was playing around last night with lowering the horinzontal res
>> after reading  the "Resolution" thread yesterday and when I changed
>> it to 352x480 I started studdering bad.  Resetting to either 640x480
>> or 720x480 brought it back inline to the little studder I have.
>> 
>> Also, what input are you using?  I'm using svideo from a directv
>> reciever, composite is the same.  I don't know about the actual
>> tuner since I don't use that much. 
>> 
>> ----- Original Message -----
>> From: <wishbone at h4b.org>
>> To: <mythtv-users at mythtv.org>
>> Sent: Wednesday, December 03, 2003 9:40 PM
>> Subject: [mythtv-users] Trying again: Bad studdering when video fades
>> toblack, or in all white frames
>> 
>> 
>>> I see really bad studdering when the video fades to black or there
>>> is all white (or a lot of white) in the video.  For those that have
>>> seen this, is there a recommendation to get around it yet?
>>> 
>>> thanks,
>>> Joshua
>>> 
>>> Myth .12
>>> IVTV (for my pvr-250) .12 version 1125A of jens code (although I
>>> noticed this even with older versions) --
>>> 
>>> *<|:oþ
>>> "Beware the Jabberwock, my son!
>>> The jaws that bite, the claws that catch!
>>> Beware the Jubjub bird, and shun
>>> The frumious Bandersnatch!"
>>> _______________________________________________
>>> mythtv-users mailing list
>>> mythtv-users at mythtv.org
>>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>> 
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

I don't have any answers to this problem, but I wanted to point out that I
am experiencing this as well.  

> Recap of specifics:
> No stuttering with using mplayer to watch recordings that myth has
> made. 
> No stuttering using mplayer to stream directly from /var/video
> Happens regardless of whether I'm watching live tv, watching a
> recording, or doing some combination of the two.  (Only when using
> myth frontend as the player).

I also had not had the stuttering before version .12.  I am also
experiencing odd frame blips.  It looks somewhat like a frame prior to the
one just displayed is thrown in the mix.  Again, this only happens when the
recordings from y pvr-250 are viewed with Myth as the player.

Paul