<div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> I recently upgraded to mythtv 0.26. Everything works fine, </font></div>
<div><font face="Verdana, Arial, Helvetica">>> except for </font></div><div><font face="Verdana, Arial, Helvetica">>> some videos which have very bad stuttering. These videos play </font></div><div><font face="Verdana, Arial, Helvetica">>> fine on </font></div>
<div><font face="Verdana, Arial, Helvetica">>> 0.25. I've also checked mplayer, which plays them very </font></div><div><font face="Verdana, Arial, Helvetica">>> smoothly as </font></div><div><font face="Verdana, Arial, Helvetica">>> well. I have an nvidia ION card and I'm using the "vdpau </font></div>
<div><font face="Verdana, Arial, Helvetica">>> normal" </font></div><div><font face="Verdana, Arial, Helvetica">>> profile, but I've been through the others (OpenGL, etc) and </font></div><div><font face="Verdana, Arial, Helvetica">>> the </font></div>
<div><font face="Verdana, Arial, Helvetica">>> problem is always the same on myth 0.26. </font></div><div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> </font></div>
<div><font face="Verdana, Arial, Helvetica">>> I used the video playback test under the Setup Wizard in the </font></div><div><font face="Verdana, Arial, Helvetica">>> frontend. </font></div><div><font face="Verdana, Arial, Helvetica">>> SD is ok, but the HD test gets stutter. I've noticed that the </font></div>
<div><font face="Verdana, Arial, Helvetica">>> log gets </font></div><div><font face="Verdana, Arial, Helvetica">>> filled with these on videos experiencing stutter (and this </font></div><div><font face="Verdana, Arial, Helvetica">>> includes </font></div>
<div><font face="Verdana, Arial, Helvetica">>> the HD test): </font></div><div><font face="Verdana, Arial, Helvetica">>> "CoreContext mythplayer.cpp:2095 (PrebufferEnoughFrames)" </font></div><div><font face="Verdana, Arial, Helvetica">>> </font></div>
<div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> I've set the nvidia powermizer to max performance, updated to </font></div><div><font face="Verdana, Arial, Helvetica">>> the 304 </font></div>
<div><font face="Verdana, Arial, Helvetica">>> nvidia driver, turned off CPU scaling - none of which have </font></div><div><font face="Verdana, Arial, Helvetica">>> made any </font></div><div><font face="Verdana, Arial, Helvetica">>> difference. </font></div>
<div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> </font></div><div><font face="Verdana, Arial, Helvetica">>> My setup is: </font></div><div><font face="Verdana, Arial, Helvetica">>> - Zotac Mag - Atom 330 CPU </font></div>
<div><font face="Verdana, Arial, Helvetica">>> - ION nvidia graphics </font></div><div><font face="Verdana, Arial, Helvetica">>> - Mythbuntu 12.04 </font></div><div><font face="Verdana, Arial, Helvetica">>> - Mythtv 0.26 </font></div>
<div><font face="Verdana, Arial, Helvetica">></font></div><div><font face="Verdana, Arial, Helvetica">></font></div><div><font face="Verdana, Arial, Helvetica">>Do you have any of the deprecated vdpau filter text items added to your </font></div>
<div><font face="Verdana, Arial, Helvetica">>vdpau video playback profiles. </font></div><div><font face="Verdana, Arial, Helvetica">>One of the removed filter options is vdpaustudiolevels, I forget the </font></div>
<div><font face="Verdana, Arial, Helvetica">>others that have been removed. </font></div><div><font face="Verdana, Arial, Helvetica">>The filters are available there but are enabled from the GUI OSD menu. </font></div>
<div><font face="Verdana, Arial, Helvetica">></font></div><div><font face="Verdana, Arial, Helvetica">>Do you have the dreaded alsa buffer size warning in your logs: </font></div><div><font face="Verdana, Arial, Helvetica">>"ALSA: Unable to sufficiently increase ALSA hardware buffer size - </font></div>
<div><font face="Verdana, Arial, Helvetica">>underruns are likely" ? </font></div><div><font face="Verdana, Arial, Helvetica">></font></div><div><font face="Verdana, Arial, Helvetica">>Not sure how any of these would cause your network bandwidth problems </font></div>
<div><font face="Verdana, Arial, Helvetica">>tho. </font></div><div><font face="Verdana, Arial, Helvetica">></font></div><div><font face="Verdana, Arial, Helvetica">>Can run "mythfrontend -v playback" to increase debugging output. </font></div>
<div><font face="Verdana, Arial, Helvetica"><br></font></div><div><font face="Verdana, Arial, Helvetica"><br></font></div><div><font face="Verdana, Arial, Helvetica">I turned on the extra debugging as suggested. Nothing stands out (although there is a *lot* of information to trawl through) besides this just repeating over and over:</font></div>
<div><font face="Verdana, Arial, Helvetica">CoreContext mythplayer.cpp:2095 (PrebufferEnoughFrames) Player(0): Waited 626ms for video buffers AAAAAAAAAAAAAAAAAAAAAAAAAAAf</font></div><div><font face="Verdana, Arial, Helvetica"><br>
</font></div><div><font face="Verdana, Arial, Helvetica">I also connect my FE to the same switch has my BE. The stuttering video completely saturates the 100M interface. A working video only uses up 1-2Mbps. </font></div>
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