I'm a long-time MythTV user, but I've only ever used Myth to watch recordings (not to watch live-tv). I've always used my DirecTV box for LiveTV as it was easier for the WAF.<div><br></div><div>I recently purchased a HDHomerun Prime, and switched from DirecTV to Xfinity. I found that the Xfinity box on-screen guide is unbearable to watch LiveTV... ughh So, I'm trying to use MythTV to watch LiveTV and ditch the Xfinity box altogether.</div>
<div><br></div><div>Problem: Recordings playback wonderfully 100% on my frontend (and have for years). LiveTV stutters about 10 times per hour, and about once per day it fails. It almost always stutters a few seconds after the channel change, which I hear is to be expected, but then it continues to stutter every so many minutes.</div>
<div><br></div><div>A) When LiveTV fails, it fails with 'video buffering failed too many times'</div><div>B) When LiveTV stutters, I see a bunch of the following in the frontend terminal (infact, I see this when it doesn't stutter also)</div>
<div><div> -RingBuf(<filename>): Waited 0.2 seconds for data to become available... 15720 < 32768</div></div><div> -RingBuf(<filename>): Taking too long to be allowed to read..</div><div><br></div><div>
I have a Geforce 210 @1024MB running 295.40 and it is using VDPAU normal settings on mythbuntu (OS 12.04)</div><div><br></div><div>Here's what I have tried so far:</div><div><br></div><div>1) Replaced network cables to HDHomerun Prime as well as to the frontend.</div>
<div>2) Replaced the hard-drive in the frontend.</div><div>3) Moved the LiveTV recording group directory to a faster RAID5 drive set on the backend (previously on home directory)</div><div>4) Stopped upmixing stereo to 5.1</div>
<div>5) I tried both streaming using the myth:// protocol, and also having the liveTV directory on the NFS share directly.</div><div>6) I tried using every window manager known to man</div><div>7) Upgraded to the newest 0.25 mythtv-fixes, which updates to a new version virtually every day</div>
<div>8) I have one other frontend with a Geforce 6150, and while it doesn't seem to stutter, the HDTV tearing is so horrible, I cannot really tell if this box has the same problem or not.</div><div>9) I've increased the HD ringbuffer size in the backend-setup</div>
<div>10) Some folks note that if you pause LiveTV for a few seconds, then the stuttering stops. This also seems to work for me, but I hate to have to pause LiveTV every time I change the channel.</div><div><br></div><div>
Does anyone have any other thoughts, or notice something I have not tried after looking the above over? Why/How could Recordings be so perfect, and LiveTV be so horrible???? Any suggestions appreciated.</div><div><br></div>
<div><br></div>