Those are good numbers. I'm running at 1920x1080p so perhaps the
scaling is hurting my performance, anything without xvmc is
unacceptable performance wise.<br>
<br>
I tried re-compiling the svn version without opengl but no luck, still
getting buffer underruns. Anyone else have any suggestions?<br><br><div><span class="gmail_quote">On 11/25/05, <b class="gmail_sendername">Curtis Stanford</b> <<a href="mailto:curtis@stanfordcomputing.com">curtis@stanfordcomputing.com
</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Just Standard decoding and Bob de-interlacing, extra audio buffering<br>
with ALSA:default. Not using OpenGL sync. Only uses 40-50% CPU<br>playing 1080i or 720p. I'm outputting to the DVI port to a native<br>720p HD set.<br><br>On Nov 25, 2005, at 9:18 AM, Michael Sciscenti wrote:<br><br>> Thanks, but I have it even with XVMC off (plus HD video is doesnt
<br>> play smoothly at all without xvmc for me). What settings are you<br>> using with XVMC off that youre able to watch HD content?<br>><br>> On 11/25/05, Curtis Stanford <<a href="mailto:curtis@stanfordcomputing.com">
curtis@stanfordcomputing.com</a> > wrote:<br>> On Nov 25, 2005, at 12:02 AM, Michael Sciscenti wrote:<br>><br>> > I've tried to avoid emailing the list until I was absolutely sure I<br>> > couldn't get any further without help.
<br>> ><br>> > I'm trying to get a Mythtv frontend/backend server up and running<br>> > on a P4 2.8 GHz box with 1 GB RAM and Nvidia Geforce 6800. HDTV<br>> > over firewire is what I'm having trouble with. I can now reliably
<br>> > connect to the cable box and get HDTV streams using test-mpeg2 and<br>> > in Mythtv itself, however I've been completely unsuccessful at<br>> > solving my audio stuttering problem. I've tried every combination
<br>> > of settings and every little suggestion I could find on the<br>> > internet and this list yet I still get the following errors:<br>> ><br>> > 2005-11-24 04:33:52.663 audio waiting for buffer to fill: have 2048
<br>> > want 4096<br>> ><br>> > or<br>> ><br>> > 2005-11-24 04:33:54.567 WriteAudio: Preparing 4096 bytes (1024<br>> frames)<br>> > 2005-11-24 04:33:54.568 WriteAudio: buffer underrun
<br>> ><br>> > Things I've tried but none have gotten rid of the stuttering:<br>> > ALSA, OSS emulation through ALSA, an asoundrc is present, Xvmc on/<br>> > off, deinterlacing (bob) on/off, extra sound card buffering on/off
<br>> > (the TV settings option), agressive buffering on/off (in General<br>> > settings), priority process on/off, etc, you name, I've tried it.<br>> ><br>> > The problem exists in both the current release of mythtv and svn
<br>> > from two days ago. I'm running Gentoo. Does anyone have any<br>> > suggestions?<br>> ><br>> > My configure setting:<br>> > ./configure --disable-distcc --prefix=/usr --mandir=/usr/share/man
<br>> > --disable-altivec --disable-xvmc-vld --disable-directfb --disable-<br>> > audio-oss --disable-directx --enable-firewire --disable-audio-jack<br>> > --disable-joystick-menu --enable-lirc --enable-xvmc --enable-opengl-
<br>> > vsync --enable-xv --enable-x11 --enable-proc-opt --disable-dbox2 --<br>> > disable-ivtv<br>> ><br>> > Also of note, I'm using a PCI firewire card that has a VIA chipset.<br>> > Some have said there are issues with these, but I dont think its
<br>> > the source of my problems since I'm able to grab streams fine using<br>> > test-mpeg2 and they playback perfectly in mplayer using xvmc. My<br>> > motherboard is a SiS chipset.<br>> ><br>> > Any help would be awesome, I'm about at my wits end and starting to
<br>> > look at other platforms, but really would like to stick with myth<br>> > if possible. Thanks.<br>><br>> I had the same problem with XvMC on. Works fine with it off, however.<br>> I'm using FX5200 and P4
2.4GHz and firewire on DCT-6200.<br>> By the way I also have a cheap $20 PCI firewire card with the VIA<br>> chipset and it works fine. Sometimes, my node switches on me (0 to 1<br>> or 1 to 0) for no apparent reason, but otherwise it works well.
<br>><br>> Curtis<br>><br>><br>><br>> _______________________________________________<br>> mythtv-users mailing list<br>> <a href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a><br>>
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