[mythtv-users] HD upgrade: new problems with playback

[Willy Boyd]

Well, yes I am using "UseEvents", and that's pretty much the only
extra option other than NoLogo I'm using since I'm going out the VGA.

And I use a USB soundcard with optical spdif because I haven't yet
ordered the extra spdif bracket.  The onboard sound is disabled in the
BIOS.  Oh and yeah, I have updated the BIOS a few days ago :)

I think the setup is pretty solid it's just something wonky in my
config.  Like I said VLC and mplayer play things like a champ so it's
not (AFAIK) in the hardware.

On 2/13/07, Calvin Harrigan <charriglists at bellsouth.net> wrote:
> Willy Boyd wrote:
> > I recently upgraded my combo backend/frontend to better support HD
> > playback.  This is what I'm running now:
> >
> > ASUS M2NPV-VM w/ 6150, VGA out (1360x768 res)
> > Athlon X2 3800+ (AM2, 65w)
> > 1gb DDR-800 ram
> > NVIDIA driver 9746
> >
> > I also upgraded from FC4 -> FC5 -> FC6, and switched to myth SVN.  And
> > I switched from using SVIDEO from my spare cablebox, to the tuner
> > input of my PVR-250 (long story, don't have the right serial port
> > bracket for the ASUS board).  I'm afraid I changed too much at once
> > because now I'm having some playback problems.  On the SD recording
> > side, I think I can attribute most of it to the weak cable signal,
> > which I previously got around using the cable box.  Basically I get a
> > lot of "NVP: prebuffering pause" and "WriteAudio: buffer underrun"
> > messages in mythfrontend.  I've tried turning off all the playback
> > options I could find, i.e. deinterlace, with and w/o realtime prio,
> > extra audio buffering, and OpenGL sync.  That helped, but still after
> > a while the frontend can hang while watching LiveTV (with said error
> > messages in the log).
> >
> > However the real kicker came when I tried to test HD playback.  I
> > don't have an HD tuner yet so for a test I downloaded "Elephant's
> > Dream" from orange.blender.org, both the 1080p version and the "1024"
> > version.  Both play pretty well with VLC and mplayer (1024 perfectly,
> > 1080p with a few drops).  However, neither play at at with the
> > Internal player.  I get a black screen and a whole slew of "NVP: Timed
> > out waiting for free video buffers" and "NVP::AddAudioData():p1: Audio
> > buffer overflow, audio data lost!".  After a few seconds on the "1024"
> > video I get what looks like the video playing really fast, but only a
> > few frames per second, and really blocky like satellite on a stormy
> > day.  Both clips are MPEG4 with AC3 audio.
> >
> > I've tried searching on the only results I've come up with relating to
> > these error message pertain to either weak signal (explains, maybe, my
> > recording/LiveTV issue), and something about NVIDIA overlay, but I
> > also turned off "Use XV picture controls" and other than that I don't
> > know what I'm supposed to do to help with that.  I also haven't
> > downloaded an HD MPEG2 clip yet but that's next on my list.  Has
> > anyone else seen these kinds of issues?  I know this is a semi-popular
> > hardware combination so there's got to be something I'm doing wrong.
> >
> > Thanks!
> > - Willy
> > _______________________________________________
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> >
>
> Oh boy, don't go there.  I just bought that setup yesterday.  Haven't
> received it yet.  Are you using the OPTION "USE EVENT" in the xorg.conf
> file?  I read somewhere that there are some problems with the audio on
> that board that is mostly fixed with a bios upgrade and the newest
> version of alsa.  There is some sort of IRQ conflict or something.
>
> Calvin...
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