Re: Multiple DirectShow Window problems


"Thore Karlsen [DShow MVP]" <sid@xxxxxxxx> wrote in message
news:jqskt19juppcinli8g4ge37l8v7diqg1vu@xxxxxxxxxx
> On Fri, 27 Jan 2006 11:19:47 -0800, "Corey Cooper" <CoreyC at

As to my last post, a red herring apparently: To recap, I had two different
ATI cards in two otherwise identical machines. I had simptoms that were
similar on the two machines, but not the same, when I 'upgraded' to a newer
model graphics card in the second machine to match the first, the problems
got worse, and now the symptoms on the two machines were identical. Even
though my symptoms seem to be audio related, I spent just over $500.00 on
two nVidea chipset cards hoping that would resove the issues. ( I can retun
them luckily!)

OK, so now I don't have an audio issue, I have a video issue (unless I go
back to ATI). The first step after installing the nVidia was to run my
original application which uses VMR9, after trying to play the third MPEG,
the machine completly freezes, and the only solution seems to be hard-reset.

So I switched to the VMR7 version, and whether I'm in the first round, (9
windows with MPEGs) or the last (25 windows with MPEGs), one through eight
run fine, 9 and higher stutter, freeze then jump ahead, etc. Audio is also
affected.

I checked using Graphedit.exe and the codecs selected have not changed, I'm
at a loss, it's 1:00AM and I'm tired.

Back to (a new) square one! Any ideas?


>
> Well, the VMR9 could be an issue, because the number of simultaneous
> instances you can have of the VMR9 is very limited, because the graphics
> card/driver limits the number of Direct3D instances. On my graphics card
> I can only have 8 of them at the same time, others have reported 10 or
> 12, but I don't think I've seen anyone report that they were able to get
> more than that. The VMR7 shouldn't have this problem since it's based on
> DirectDraw, but on the other hand it's an XP-only renderer so it might
> not be appropriate for you application.
>
> The classic renderer might be another option. That one is also
> DirectDraw-based, and reverts to software rendering if it has to.
>
> >> Btw, the answer to this question:
> >>
> >> >When I load the MPEGs, I do a sequential thing, where I send the
message
> >> >with the file name to load, the video window creates and Renders the
graph,
> >> >I then set a timer for a period (it was 2 milliseconds, now to try and
> >> >alleviate problems it's 250 m'secs), to allow some buffers to load,
then I
> >> >tell it to play, set a timer again for 2 m'secs, and when I get that
timer
> >> >callback I tell it to Pause. That's the way I know how to get it to
pause
> >> >already displaying frame 0, if there's a better way, PLEASE let me
know.
> >>
> >> If you just call Pause() it will show frame 0. No need for timers or
> >> running the graph first.
>
> >I had a problem with that a while ago (different project) using WMV's and
> >this solution worked to fix it, I guess I'm over complicating things.
> >
> >I'm actually worried more about what I describe as the second problem,
but I
> >brought them up in that order because I think they must be related in
some
> >way.
> >
> >Thank You So much for the fast replys, I have to be in the studio with
this
> >on Tuesday, and we tape a week from today. This is sort of a 'failure is
> >not an option' situation!
>
> No problem, I'll do what I can to help, but your problems are strange
> enough that I can't say for sure what the cause is.
>
> Let me know if changing the video renderer helps.
>
> --
> New to newsgroups? Read: http://dev.6581.com/newsgroups.html


.

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