[mythtv-users] bob & 800x600 - can someone test?

[John Biundo]

Nick,

I'm messing with the same kinda stuff.  Similar, but not exact same 
symptoms.

I was extremely frustrated after going to 7676 and using bob deinterlace 
and OpenGL VSync (and 800 x 600) to see very high CPU utilization.  Out 
of total frustration, I rebooted, and lo and behold, my CPU utilization 
is down to around 25% now.  Don't know what happened, and I didn't 
change anything else.  It seems to be sticking there, but I haven't 
watched a lot of TV since then, so nothing definitive can be deduced yet.

I am getting a TON of rebuffering messages in the frontend since these 
changes (maybe around 2/second), and though I don't really know what 
rebuffering means, I'm suspecting that it's related to a different 
extremely annoying problem I'm seeing, which I'll call "jitter" or 
"skipping" (or dropped frames?) for lack of a better term.

I was previously running at 1024 x 768, so I'm going to try going back 
to that resolution to see if it makes a difference.

Anyway, this probably doesn't help you much, but it seems like our 
symptoms *might* be related to a similar underlying problem.

Cheers,
john
Nick Bartos wrote:
> I am having an extremely annoying problem that I can't seem to fix.  At
> this point I am wondering if I am doing something screwy and I'm the only
> one who is having this problem.  If someone else could test bob
> deinterlacing with 800x600 I would really appreciate it.
> 
> Basically the problem I am having is that the xorg cpu sticks at about 99%
> (of one core of a pentium d 3.2GHz).  It does not necessarily start there.
>  If opengl vsync is enabled, then it seems to take less time getting to
> 99%.  If opengl vsync is disabled, it still gets to 99% but it seems to
> take longer.  In either case, once it is there it seems to generally stick
> there (although not always).
> 
> I am running the nvidia 7676 drivers (on a nvidia 6600, svideo out), but I
> have tried several different driver versions.
> 
> I pretty much have to use bob deinterlacing, since that is the only way I
> can actually forget I am watching tv from a computer.  Kernel deinterlace
> is close but just doesn't do it good enough.  Although, with kernel I get
> MUCH lower cpu utilization.
> 
> I would use 720x480, but I can't do that since bob deinterlacing doesn't
> work reliably (after pausing, changing channels, etc it stutters very
> badly).  At 720x480 the xorg process doesn't do that, but after I pause I
> am screwed so I can't use that resolution.  There is a bug report in for
> that problem I see, but I tried svn last night and the problem was still
> there so that's not an option at this point.
> 
> 
> 
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