[mythtv-users] On video w/mostly black,

[wishbone at h4b.org]

So obviously a large number of people have this problem.  How can I provide
more information to make it easier to diagnose.  

TIA,
joshua

On Sat, Nov 22, 2003 at 08:02:12PM -0800, wishbone at h4b.org wrote:
> Yes...  watching the file directly with mplayer and windows shows no
> problems at all.  Which I actually hadn't tested yet.  I was actually refering
> to useing mplayer to watch /dev/video directly and it doesn't have any
> problems.  However, when I watch the recorded show with myth it studders in the
> same place every time.  It appears particularly random, although it does seem
> to happen more often when there is a lot of black on the screen.
> 
> I am not watching a pre-recorded program when anything else is recording or
> watching live-tv.
> 
> I've tried pausing live tv and it doesn't help at all.  Even rewinding, but
> like I said it seems to appear exactly in the same spot every time.  Low motion
> VBR problem maybe?  (yes I'm reaching here for anything)
> 
> no error or otherwise strange messages from mythbackend or frontend logs.
> 
> DMA is always a possible solution, but I see this regardless if I'm watching a
> show currently being recorded, or just watching an old recording.  I've tested
> this with NOTHING else happening on the box.
> 
> Hope that helps get us closer =T  I'll turn on extra logging options if it will
> help?
> 
> thanks again,
> joshua
> 
> 
> On Sat, Nov 22, 2003 at 10:35:10PM -0500, Chris Pinkham wrote:
> > > It is in the recorded file and why wouldn't it show up in live tv?  Isn't live
> > > tv "recorded" and you watch the ringbuffer file?  Anyway mplayer works fine and
> > > you can watch the live stream /dev/video without any problems.  I'm not sure
> > > about the other person who just mentioned this problem but I only seem to be
> > > having the problem in myth.  Anyway, the studders are ending up in the recorded
> > > files as well and not just in "live" tv.
> > 
> > So you ran mplayer on one of the Myth recorded files and mplayer stuttered at the
> > same point that Myth did when watching the file?
> > 
> > Couple questions:
> > 
> > Are you watching a pre-recorded program while another is recording?
> > 
> > Does the problem happen if you pause LiveTV for a few minutes and then unpause
> > it and continue watching?
> > 
> > Are there any messages printed out in the window you ran mythfrontend from or
> > on the backend?  How about the syslog, anything there from ivtv?
> > 
> > I'm wondering if you're running into problems with reading/writing the mpeg2
> > files at the same time or maybe dma problems or something.
> > 
> > -- 
> > 
> > Chris
> > 
> -- 
> 
> *<|:oþ
> "Beware the Jabberwock, my son!
> The jaws that bite, the claws that catch!
> Beware the Jubjub bird, and shun
> The frumious Bandersnatch!"
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-- 

*<|:oþ
"Beware the Jabberwock, my son!
The jaws that bite, the claws that catch!
Beware the Jubjub bird, and shun
The frumious Bandersnatch!"