On Nov 25, 2005, at 12:02 AM, Michael Sciscenti wrote:
I've tried to avoid emailing the list until I was absolutely sure I
couldn't get any further without help.
I'm trying to get a Mythtv frontend/backend server up and running
on a P4 2.8 GHz box with 1 GB RAM and Nvidia Geforce 6800. HDTV
over firewire is what I'm having trouble with. I can now reliably
connect to the cable box and get HDTV streams using test-mpeg2 and
in Mythtv itself, however I've been completely unsuccessful at
solving my audio stuttering problem. I've tried every combination
of settings and every little suggestion I could find on the
internet and this list yet I still get the following errors:
2005-11-24 04:33:52.663 audio waiting for buffer to fill: have 2048
want 4096
or
2005-11-24 04:33:54.567 WriteAudio: Preparing 4096 bytes (1024 frames)
2005-11-24 04:33:54.568 WriteAudio: buffer underrun
Things I've tried but none have gotten rid of the stuttering:
ALSA, OSS emulation through ALSA, an asoundrc is present, Xvmc on/
off, deinterlacing (bob) on/off, extra sound card buffering on/off
(the TV settings option), agressive buffering on/off (in General
settings), priority process on/off, etc, you name, I've tried it.
The problem exists in both the current release of mythtv and svn
from two days ago. I'm running Gentoo. Does anyone have any
suggestions?
My configure setting:
./configure --disable-distcc --prefix=/usr --mandir=/usr/share/man
--disable-altivec --disable-xvmc-vld --disable-directfb --disable-
audio-oss --disable-directx --enable-firewire --disable-audio-jack
--disable-joystick-menu --enable-lirc --enable-xvmc --enable-opengl-
vsync --enable-xv --enable-x11 --enable-proc-opt --disable-dbox2 --
disable-ivtv
Also of note, I'm using a PCI firewire card that has a VIA chipset.
Some have said there are issues with these, but I dont think its
the source of my problems since I'm able to grab streams fine using
test-mpeg2 and they playback perfectly in mplayer using xvmc. My
motherboard is a SiS chipset.
Any help would be awesome, I'm about at my wits end and starting to
look at other platforms, but really would like to stick with myth
if possible. Thanks.
I had the same problem with XvMC on. Works fine with it off, however.
I'm using FX5200 and P4 2.4GHz and firewire on DCT-6200.
By the way I also have a cheap $20 PCI firewire card with the VIA
chipset and it works fine. Sometimes, my node switches on me (0 to 1
or 1 to 0) for no apparent reason, but otherwise it works well.
Curtis
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