<div dir="ltr"><br><div class="gmail_extra"><div class="gmail_quote">On Wed, Feb 13, 2013 at 1:04 PM, F.B. Parker <span dir="ltr"><<a href="mailto:fbp.mythtv@gmail.com" target="_blank">fbp.mythtv@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br><div><div>Greetings</div><div><br></div><div>OK, this is a strange one - I have no idea what's happening here.</div>
<div><br></div><div>I have a MythTV 0.25-fixes BE/FE system running on a desktop PC with 3.1 GHz dual-core Athlon, 4 GB RAM, Mythbuntu 12.04, and an NVidia GT 430 video card with VDPAU hardware video acceleration. The system is used primarily as a MythTV system for TV recording (HDHR) and playback. It drives a 47-inch LG LED TV by HDMI. The video quality on MythTV HD playback is just about perfect. </div>
<div><br></div><div>Then I installed Subsonic 4.7 ( <a href="http://subsonic.org" target="_blank">http://subsonic.org</a> ) on the same machine last weekend. Subsonic is software that allows audio and video streaming, and I use it mostly to stream audio to my workplace over the internet. </div>
<div><br></div><div>But the video quality during MythTV FE playback on the TV that's hooked directly to the PC by HDMI was very noticeably degraded by the Subsonic installation: I started getting very noticeable frame-tearing:</div>
<div><br></div><div><a href="http://www.mythtv.org/wiki/Frame_display_timing" target="_blank">http://www.mythtv.org/wiki/Frame_display_timing</a></div><div><br></div><div>This had never happened before. I stopped the Subsonic service and I still got tearing. Then I logged out and back in (I guess this restarts the X window system but does not restart the Subsonic service). This took care of it: no more tearing - the MythTV video on the attached TV was back to its previous excellent state. </div>
<div><br></div><div>So Subsonic is somehow interfering with and degrading MythTV video playback on the attached TV. </div><div><br></div><div>This process is 100% repeatable: launch Subsonic and the MythTV video output is very noticeably degraded. Stop Subsonic, then log out and back in, and MythTV video output on the attached TV is perfect again.</div>
<div><br></div><div>I have already posted this to the Subsonic forum several days ago, and I got zero response. Are there any MythTV users out there who are also running Subsonic on the same machine? If so, do you have degraded video quality?</div>
<div><br></div><div>Any ideas what's happening here? Any chance that this might be fixed? Or a workaround?</div><div><br></div></div></blockquote><div><br></div><div style>First off, I'm not sure what you expect to be fixed, and by whom, since it's pretty obviously a problem with Subsonic and not MythTV. Without more information, I'd guess that Subsonic is chewing up CPU or some other system resource that is starving MythTV playback.</div>
<div style><br></div><div style>Tom</div><div style> </div></div></div></div>