<div dir="ltr"><div dir="ltr"><br><br><div class="gmail_quote"><div dir="ltr">On Mon, Oct 15, 2018 at 12:41 PM Peter Bennett <<a href="mailto:pb.mythtv@gmail.com" target="_blank">pb.mythtv@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="gmail-m_4552706626220678435m_-1002528816667837117moz-cite-prefix">On 10/15/2018 01:13 PM, Jay Harbeston
(ISeePeople) wrote:<br>
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<div>On Oct 15, 2018, at 11:50 AM, Allen Edwards <<a href="mailto:allen.p.edwards@gmail.com" target="_blank">allen.p.edwards@gmail.com</a>>
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<div dir="ltr">I changed the name of my
thread because the video card update problems
are gone (thanks to the help from all of you)
and I am only left with glitches in the
recordings. I have done a lot of experimentation
to try and isolate the problem but am at a loss
as to what is going on.
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<div>Here is an example of a bad
glitch <a href="http://l-36.com/mythtv.jpg" target="_blank">http://l-36.com/mythtv.jpg</a></div>
<div>Here is an example of a small one
blown up to show it <a href="http://l-36.com/mythtv4.jpg" target="_blank">http://l-36.com/mythtv4.jpg</a></div>
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<div>You can use the hdhomerun_config and
hdhomerun_config_gui utilities to see the status of the stream
using the following example:</div>
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<div>You will want to use the gui to set the channel to
be verified and then do the following:</div>
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<pre><span style="font-size:10pt;font-family:CourierNewPSMT">hdhomerun_config FFFFFFFF save /tuner0 capture.ts
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<pre><font size="3" face="CourierNewPSMT">This will capture the video to the file capture.ts, and also echo information while recording.</font></pre>
<pre><font size="3" face="CourierNewPSMT">Quoting from the hdhomerun development pdf document:</font></pre></div></div></div></div></blockquote></div></blockquote><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div bgcolor="#FFFFFF"><blockquote type="cite"><div><div class="gmail-m_4552706626220678435m_-1002528816667837117page" title="Page 8"><div class="gmail-m_4552706626220678435m_-1002528816667837117layoutArea"><div class="gmail-m_4552706626220678435m_-1002528816667837117column">
<pre><div class="gmail-m_4552706626220678435m_-1002528816667837117page" title="Page 8"><div class="gmail-m_4552706626220678435m_-1002528816667837117layoutArea"><div class="gmail-m_4552706626220678435m_-1002528816667837117column"> <pre><span style="font-size:10pt;font-family:CourierNewPSMT">............n...............................n..........ts..........
-- Video statistics --
23323 packets recieved, 2 network errors, 1 transport errors, 1 sequence errors
</span></pre><p><span style="font-size:10pt;font-family:Verdana;font-weight:700">Advanced: </span><span style="font-size:10pt;font-family:Verdana">A filename of “null” indicates no file should be created, allowing the use of the save
command as a diagnostic tool.
</span></p><p><span style="font-size:10pt;font-family:Verdana;font-weight:700">Advanced: </span><span style="font-size:10pt;font-family:Verdana">“-” may be used as a filename to indicate standard output, allowing the save
command to be used as a pipe on supported platforms.
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<pre><span style="font-size:10pt;font-family:CourierNewPSMT">eg: hdhomerun_aptureconfig FFFFFFFF save /tuner0 - | vlc -
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</div>The dev document can be downloaded from SiliconDust, and has much more information that can be had using the utility.</div><div class="gmail-m_4552706626220678435m_-1002528816667837117column">
</div><div class="gmail-m_4552706626220678435m_-1002528816667837117column">Something you can also check using the hdhomerun_config_gui is the signal strength and quality live.</div><div class="gmail-m_4552706626220678435m_-1002528816667837117column">
</div><div class="gmail-m_4552706626220678435m_-1002528816667837117column">I have found these tools very handy.</div><div class="gmail-m_4552706626220678435m_-1002528816667837117column">
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I had the same problem with HD Homerun Prme, and the above test
showed dropped packets. It was my router that was dropping UDP
packets. I changed to a switch instead of the router between the
HDHomerun Prime and the backend and the problem was solved.<br>
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Peter</div></blockquote><div><br></div><div>Thanks for the suggestions.</div><div><br></div>I have tried a few things.<br>1) sudo sysctl -w net.core.rmem_max=1048576 increased some buffer sizes -- no change <br>2) Ran hdhomerun_config FFFFFFFF save /tuner0 - | vlc - --where FFFFFFFF was the address of one of the tuners. By the way, the tuners show 100% signal strength and 80 - 100% signal quality. I got a series of dots across the screen and no indication of a problem.<br>3) I switched the number of backend jobs to 1 from 2. It was 2 in the Mythbuntu 8 system so I think that should be OK. We will watch the show tomorrow morning to verify but I did not see any artifacts in about 5 minutes of watching.<br><br><br></div><div class="gmail_quote"><div class="gmail_quote">dad@NewMyth:~$ hdhomerun_config 10126134 save /tuner0 null</div><div class="gmail_quote">.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................^C</div><div class="gmail_quote">-- Video statistics --</div><div class="gmail_quote">15743 packets received, 0 overflow errors, 0 network errors, 0 transport errors, 0 sequence errors</div><div><br></div><div>Note, I could not play anything using VLC either on the myth box or my computer. The file was capture.ts but I was mainly interested in the statistics, which did not show a problem.</div><div> <br></div><div>Doesn't seem like it is a HDHomerun problem. </div><div><br></div><div>My guess is it is a myth problem either because the software no longer supports such a slow computer, or some configuration changed between my install of Mythbuntu 8 and 16.</div><div><br></div><div>Allen</div><div><br></div><div>Allen</div></div></div></div>