<br><br>
<div><span class="gmail_quote">On 17/01/2008, <b class="gmail_sendername">Steve Peters - Priority Electronics</b> <<a href="mailto:steve@priorityelectronics.com">steve@priorityelectronics.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div>
<div><font face="Arial" color="#0000ff" size="2"></font> </div>
<blockquote dir="ltr" style="MARGIN-RIGHT: 0px">
<div></div>
<div lang="en-us" dir="ltr" align="left"><font face="Tahoma" size="2"><span class="q">-----Original Message-----<br><b>From:</b> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users-bounces@mythtv.org" target="_blank">
mythtv-users-bounces@mythtv.org</a> [mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users-bounces@mythtv.org" target="_blank">mythtv-users-bounces@mythtv.org</a>] <b>On Behalf Of </b>
Steve Smith<br></span>
<div><span class="e" id="q_117850e4e3d80574_2"><b>Sent:</b> Wednesday, January 16, 2008 1:14 AM<br><b>To:</b> Discussion about mythtv<br><b>Subject:</b> Re: [mythtv-users] am i dropping frames?<br><br></span></div></font>
</div>
<div><span class="e" id="q_117850e4e3d80574_4"><br><br>
<div><span class="gmail_quote">On 15/01/2008, <b class="gmail_sendername">Steve Peters - Priority Electronics</b> <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:steve@priorityelectronics.com" target="_blank">
steve@priorityelectronics.com</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br><br>-----Original Message-----<br>From: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users-bounces@mythtv.org" target="_blank">
mythtv-users-bounces@mythtv.org </a><br>[mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users-bounces@mythtv.org" target="_blank">mythtv-users-bounces@mythtv.org</a>] On Behalf Of Jesse Burt
<br>Sent: Tuesday, January 15, 2008 9:53 AM<br>To: Discussion about mythtv<br>Subject: Re: [mythtv-users] am i dropping frames? <br><br><br><br>On Tue, 2008-01-15 at 10:33 -0700, Brian Wood wrote:<br>> Steve Peters - Priority Electronics wrote:
<br>><br>> > ____________________________________________________________<br>> ><br>> > <br>> > Beww, so are you saying that this might be normal for myth<br>> > recordings? Is everyone using mythtv stuck with this kind of
<br>> > playback problem? It's not the artifacts that are the problem, it's <br>> > the lack of smooth playback that is the problem. I just don't see<br>> > how any sports fan could put up with this. I go to other people's
<br>> > houses and watch sports there and I think to myself...I'd better not <br>> > invite them over to my place to watch sports, cause that will make<br>> > my mythtv setup look really bad. -Thanks
<br>><br>> No, you should be able to get a recording (and playback) that most<br>> viewers would not be able to tell from "live" TV, unless you have some<br>> very critical (and observant) viewers.<br>
><br>> If you are not, the first thing to do is determine if the problem is<br>> with the recording or the playback. Try playing back a known good<br>> recording, then try playing back a Myth recording with something other
<br>> than Myth.<br>><br>> The recording you posted looked pretty good to me except for the <br>> interlace artifacts.<br>><br>> beww<br>> _______________________________________________<br>> mythtv-users mailing list
<br>> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org" target="_blank">mythtv-users@mythtv.org</a><br>> <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br><br>I agree with beww that with the right settings it would be difficult to tell<br>the difference unless, as stated, someone is very critical or observant or
<br>the difference is being looked for. With the right settings, I find that<br>image impurities that are easily noticeable on my 15" Laptop LCD or 22"<br>Desktop LCD wind up looking perfectly normal on a plain old 29" CRT TV. Also
<br>is that channel (in your example clip) available as a digital channel on<br>your service (probably encrypted if it is)? If so, and your TV is connected<br>to a cable/sat box, perhaps when watching TV through it, you are watching a
<br>digital version of the analog-encoded clip you posted. If so, that could<br>account for a difference in quality.<br><br>Cheers,<br>Jesse Burt<br><br><br>_______________________________________________<br>mythtv-users mailing list
<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org" target="_blank">mythtv-users@mythtv.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users</a><br><br><br>----------------------------------------------------------------------- <br><br>Jesse, Steve, Mitch, and Brian, thanks for the replies,<br><br>I have to agree with Steve... Bob is the problem :)
<br><br>I think if I can figure out why it is not working, I'll be set. That was<br>recorded from espn analog. Time warner cable in my area has teriffic quality <br>digital cable, where it looks way better than analog. On my espn digital
<br>(still in sd), I get the same effect. On my espn hd channel I get the same<br>effect. So I don't think it's the signal that is the issue here. <br><br>I'm not so concerned with the image artifacts... when I watch on my 14"
<br>widescreen laptop, I see them, but on my 55" 480p tv, I don't notice them at<br>all, probably cause of the resolution of the screen I am viewing. <br><br>As to figuring out if the problem is with the recording or the playback,
<br>Brian recommended playing back a know good recording, then try playing back<br>a myth recording with something other than myth. ----well...that video I <br>uploaded, I played back on my windows laptop, and it looked pretty decent.
<br>Also, what is a known good recording? Something downloaded from the web<br>perhaps? Maybe one of you guys can upload or email me a known good recording <br>(preferebly sports) and I can play it back on my laptop and then on my
<br>mythtv.....? :)<br><br>Also, is there a way to find out if I am indeed dropping frames? Because if<br>that is the issue, then all this other troubleshooting is for naught. <br><br>Lastly for now, any ideas on how to fix Bob? Could it be related to an
<br>nvidia drivers setting or something like that?<br><br>-Thanks so much for the help/tips.<br><br><br>_______________________________________________ <br>mythtv-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org" target="_blank">
mythtv-users@mythtv.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
</a><br></blockquote></div>
<div> </div>
<div>Steve,</div>
<div> </div>
<div>Well the first thing to do is to get some log output:</div>
<div> </div>
<div>mythfrontend -v playback >/tmp/frontend.log</div>
<div> </div>
<div>Should put some useful output in /tmp/frontend.log....</div>
<div> </div>
<div>I'm guessing you'll see something along the lines of....."Refresh too low for bobdeint defaulting to onefield..."</div>
<div>In which case you'll need "Viktor's Patch"... search this list for posts from me mentioning Viktor & bob and you'll find it.</div>
<div> </div>
<div>(You could also try mplayer -vo xvmc:bobdeint FILE.mpg, this may or may not work depending on your setup. But if it works you'll be able to see what bob should look like)</div>
<div> </div>
<div>Cheers</div>
<div> </div>
<div>Steve<br> <span><font face="Arial" color="#0000ff" size="2"> </font></span></div>
<div><span></span> </div>
<div><span></span> </div>
<div><span></span> </div></span></div>
<div><span><font face="Arial" color="#0000ff" size="2">OK, it seems like there is some bad stuff happening in the log file. What i did was </font> <font face="Arial" color="#0000ff" size="2">run that command you said for the frontend with linear deinterlacing, then one just for bob setting. I ran the video (live tv) only for around 15 seconds at each command line. I have two files on my site, both around 12k in size.
</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2"></font></span> </div>
<div><span><font face="Arial" color="#0000ff" size="2">here are the files:</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2"></font></span> </div>
<div><span><font face="Arial" color="#0000ff" size="2"><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.penguinframe.com/frontend.log" target="_blank">http://www.penguinframe.com/frontend.log</a>
--uses kernal</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2"><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.penguinframe.com/frontend-bob.log" target="_blank">http://www.penguinframe.com/frontend-bob.log
</a> --uses bob</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2"></font></span> </div>
<div><span><font face="Arial" color="#0000ff" size="2">Let me know what you guys think.</font></span></div>
<div><span><font face="Arial" color="#0000ff" size="2">-Thanks</font></span></div></blockquote></div><br>_______________________________________________<br>mythtv-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:mythtv-users@mythtv.org">
mythtv-users@mythtv.org</a><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users" target="_blank">http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
</a><br><br></blockquote></div>
<div><br> </div>
<div> </div>
<div> </div>
<div>Steve,</div>
<div> </div>
<div> </div>
<div>Looking at your BOB log:</div>
<div> </div>
<div><font size="2">
<p>2008-01-16 15:33:26.599 Using deinterlace method bobdeint</p>
<p>*****************************************************************************************************************************</p>
<p>*******2008-01-16 15:33:26.701 nVidiaVideoSync: VBlank ioctl did not work, unimplemented in this driver?****</p>
<p>*****************************************************************************************************************************</p>
<p>2008-01-16 15:33:26.701 DRMVideoSync: Could not open device /dev/dri/card0, No such file or directory</p>
<p>2008-01-16 15:33:26.701 RTCVideoSync: Could not set RTC frequency, Permission denied.</p>
<p>2008-01-16 15:33:26.701 Set video sync frame interval to 33366</p>
<p>2008-01-16 15:33:26.701 Using audio as timebase</p>
<p>2008-01-16 15:33:26.701 Video timing method: USleep with busy wait</p>
<p>2008-01-16 15:33:26.701 Refresh rate: 16679, frame interval: 33366</p>
<p> </p>
<p>The line I've highlighted suggests that Sync to VBlank might not be enabled on your video card. Try running</p>
<p>nvidia-settings (I can't actually remember the name of the program at the moment I think its called this!)</p>
<p>Play with the Sync to.... settings to see if this helps! (You'll have to keep restarting the playback on mythfrontend).</p>
<p>(I wouldn't worry about the dropped frames reported at the moment I always expect playback to stutter a bit in the first couple of seconds)</p>
<p>Cheers</p>
<p>Steve</p></font></div>