<br><br><div class="gmail_quote">On Thu, Sep 9, 2010 at 1:18 PM, Alex and Gina Johnson <span dir="ltr"><<a href="mailto:atj@paradise.net.nz">atj@paradise.net.nz</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div link="blue" vlink="purple" lang="EN-NZ"><div><p class="MsoNormal">Hi folks,</p><p class="MsoNormal"> </p><p class="MsoNormal">My problem here in NZ is that I get a good video signal, but constantly get buffer underrun errors / NVP prebuffer and jittery sound.</p>
<p class="MsoNormal">I have tried everything that I can find including re-complies, changing my tv setting profiles, turning sound off and on, changing my sound profile.</p><p class="MsoNormal">I know about Paul Kendall’s LATM patch and thought I had compiled to accommodate it</p>
<p class="MsoNormal"> </p><p class="MsoNormal">Any ideas of what I may have missed?</p><p class="MsoNormal"> </p><p class="MsoNormal">I am running Ubuntu 10.4 Lucid ;</p><p class="MsoNormal">P4 3.2 GHz</p><p class="MsoNormal">
3 GB RAM</p><p class="MsoNormal">80 GB SATA HDD and 1TB external USB HDD</p><p class="MsoNormal">ATI HD 4650 AGP 1GB DDR graphics</p><p class="MsoNormal">Soundblaster pro (oldie but a goodie)</p><p class="MsoNormal"> </p>
<p class="MsoNormal">mythtv-0.23.0+fixes24158</p><p class="MsoNormal">ffmpeg_4:SVN-r24796-1_i386.deb</p><p class="MsoNormal">FFmpeg version SVN-r24796, Copyright (c) 2000-2010 the FFmpeg developers</p><p class="MsoNormal">
built on Aug 22 2010 13:08:03 with gcc 4.4.3</p><p class="MsoNormal"> configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab</p>
<p class="MsoNormal"> libavutil 50.23. 0 / 50.23. 0</p><p class="MsoNormal"> libavcore 0. 4. 0 / 0. 4. 0</p><p class="MsoNormal"> libavcodec 52.85. 1 / 52.85. 1</p><p class="MsoNormal"> libavformat 52.78. 2 / 52.78. 2</p>
<p class="MsoNormal"> libavdevice 52. 2. 1 / 52. 2. 1</p><p class="MsoNormal"> libavfilter 1.34. 1 / 1.34. 1</p><p class="MsoNormal"> libswscale 0.11. 0 / 0.11. 0</p><p class="MsoNormal"> libpostproc 51. 2. 0 / 51. 2. 0</p>
<p class="MsoNormal"> </p><p class="MsoNormal">root@Vadar:~/ffmpeg# mythfrontend --version</p><p class="MsoNormal">Please include all output in bug reports.</p><p class="MsoNormal">MythTV Version : exported</p><p class="MsoNormal">
MythTV Branch : branches/release-0-23-fixes</p><p class="MsoNormal">Network Protocol : 56</p><p class="MsoNormal">Library API : 0.23.20100314-1</p><p class="MsoNormal">QT Version : 4.6.2</p><p class="MsoNormal">
Options compiled in:</p><p class="MsoNormal">linux release using_oss using_alsa using_pulse using_jack using_pulseoutput using_backend using_directfb using_dvb using_frontend using_hdpvr using_iptv using_ivtv using_libudev using_lirc using_mheg using_opengl_video using_opengl_vsync using_qtdbus using_qtwebkit using_v4l using_x11 using_xrandr using_xv using_xvmc using_xvmc_vld using_xvmcw using_bindings_perl using_bindings_python using_opengl using_vdpau using_ffmpeg_threads using_live using_mheg</p>
<p class="MsoNormal"> </p><p class="MsoNormal">from my configure.log</p><p class="MsoNormal"> ./configure --enable-libfaad --disable-joystick-menu --disable-firewire --disable-hdhomerun --prefix=/usr/local</p></div></div>
</blockquote><div><br><br>1. If you aren't already you might like to join the mythtvnz mailing list - <a href="http://lists.ourshack.com/mailman/listinfo/mythtvnz">http://lists.ourshack.com/mailman/listinfo/mythtvnz</a><br>
<br>2. Is this on all channels? I think TV3 has a ac3 audio stream as well as the AAC one, does it work better/differently if you change audio streams?<br><br>3. Are you sure your system is up to decoding h.264 in the CPU? I would have serious doubts and this may be the source of your problems. Hate to say it but ATI has no hardware acce;eration for decoding video in linux, you may be better with an nVidia GT220 or similar card, and activate VDPAU.<br>
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