I have been using MythTV for about four years now and my wife and I have become quite addicted to it. However, recently (last 3-4 months) we have noticed two problems with playback which may or may not be related to each other. I am running trunk recently updated (25397) on an Intel Quad Core CPU (2.4GHz) with an NVIDIA GeForce 6600 video card and NVIDIA driver 190.53. I have tried using all three VDPAU profiles with the same results. Normally, I leave the profile set to VDPAU High Quality. For the VDPAU High Quality, I have set the filter="vdpaucolorspace=auto,vdpaubuffersize=50". I have not changed the filters for the two other VDPAU profiles.<div>
<br></div><div>The first problem is what I call "jerkiness". The recording plays along fine and then it will act like it freezes for 200 -> 500 mSec and then catches up. I do not hear any break-up of the audio during this "skip". This occurs regularly; every 1-3 minutes. This does not make the recording unwatchable, but it is a bit annoying. Kind of like having a mosquito buzzing around your ear when you are trying to go to sleep.</div>
<div><br></div><div>The second problem I have observed in both videos and recordings. The video starts playing like it is in some kind of fast forward mode while the audio continues along at normal speed. If I hit pause twice, or skip back, the video straightens itself out and gets back in sync with the audio. This scenario is much less frequent the the previous problem; maybe once in every 2 -> 3 one hour shows.</div>
<div><br></div><div>I am pretty sure I have seen these problems on both H264 and MPEG2 recordings (I have an HD-PVR and HD-HR). I am at a bit of a loss to know how to go about troubleshooting this. I have seen other issues discussed on this list regarding stuttering but those seem to have all be related to using/not using VDPAU or playback of DVDs. I have the feeling that I have misconfigured something or failed to configure something that had been added to trunk in the last 3-4 months.</div>
<div><br></div><div>Kind regards,</div><div><br></div><div>-- Ken E.</div>