<br><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Nov 5, 2012 at 2:13 AM, Mark Greenwood <span dir="ltr"><<a href="mailto:fatgerman@gmail.com" target="_blank">fatgerman@gmail.com</a>></span> wrote:<br>
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<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">On Sunday 04 Nov 2012 07:59:03 Marco Quezada wrote:<br></p>
<p style="margin-top:12px;margin-bottom:12px;margin-left:40px;margin-right:40px;text-indent:0px"><br>On Nov 3, 2012 9:44 PM, "Mark Greenwood" <<a href="mailto:fatgerman@gmail.com" target="_blank"><span style="text-decoration:underline;color:#0057ae">fatgerman@gmail.com</span></a>> wrote:<br>
><br>> I'm experiencing some glitching on a few videos and I'm having trouble sorting it out. Running 0.26 on an atom/ION box on kernel 3.2 (mythbuntu 12.04), using the VDPAU High Quality playback setting.<br>
><br>> I've gone through the wiki entry on glitch-free playback and inserted all the ModeLines into my xorg.conf as described, but things still aren't quite right.<br>><br>> Here's some log output from mythfrontend -v playback on an mkv file (x264/AC3 audio). I'm downmixing 6 channel audio to stereo.<br>
><br>> 2012-11-04 01:14:26.634266 I AFD: Stream #0, has id 0x0 codec id H264, type Video, bitrate 0 at 0xcf31740<br>> 2012-11-04 01:14:26.644142 I AFD: Selected FPS is 23.976 (avg 23.976 codec 23.976 container 1000 estimated 23.976)<br>
> 2012-11-04 01:14:26.644215 I Player(0): SetFrameInterval ps:1 scan:3<br>> 2012-11-04 01:14:26.644285 I Player(0): detectInterlace(Detect Scan, Interlaced Scan, 23.976, 720) ->Progressive Scan<br>><br>> 2012-11-04 01:14:26.644339 I AFD: Using vdpau for video decoding<br>
> 2012-11-04 01:14:26.644360 I AFD: Looking for decoder for H264<br>> 2012-11-04 01:14:26.644970 I AFD: Opened codec 0xcf31920, id(H264) type(Video)<br>> 2012-11-04 01:14:26.645064 I AFD: Stream #1, has id 0x0 codec id AC3, type Audio, bitrate 448000 at 0xcc807c0<br>
> 2012-11-04 01:14:26.645090 I AFD: codec AC3 has 6 channels<br>> 2012-11-04 01:14:26.645110 I AFD: Looking for decoder for AC3<br>> 2012-11-04 01:14:26.646601 I AFD: Opened codec 0xcf31d00, id(AC3) type(Audio)<br>
> 2012-11-04 01:14:26.646810 I AO: Opening audio device 'hdmi:CARD=NVidia,DEV=0' ch 2(6) sr 48000 sf signed 32 bit reenc 0<br>><br>> 2012-11-04 01:14:26.839834 I VDP: SetVideoRenderer(vdpau)<br>> 2012-11-04 01:14:26.839861 I VDP: SetVideoRender(vdpau) == GetVideoRenderer()<br>
> 2012-11-04 01:14:26.841953 I Trying to match best refresh rate 23.976Hz<br>> 2012-11-04 01:14:26.842011 I Trying 1920x1080 23.976 Hz<br>> 2012-11-04 01:14:26.844032 I Dynamic TwinView rate found, set 23.9758Hz as XRandR 57<br>
><br>> This is my first observation: I've got a ModeLine for 1920x1080 at 23.976. So why is it saying it's using a Dynamic Twinview rate at 23.9758?<br>><br>> 2012-11-04 01:14:27.261016 I VDPAU: Information NVIDIA VDPAU Driver Shared Library 295.40 Thu Apr 5 21:54:31 PDT 2012<br>
> 2012-11-04 01:14:27.261041 I VDPAU: HQ Scaling not supported.<br>> 2012-11-04 01:14:27.261063 I VDPAU: MPEG4 hardware acceleration not supported.<br>><br>> My second observation: Why is it saying MPEG4 hardware acceleration not supported? I'm pretty sure that the chipset in this box does MPEG4 acceleration.<br>
><br>> 2012-11-04 01:14:27.901087 I VDP: GetFilteredDeint() : vdpau -> 'vdpauadvanceddoublerate'<br>> 2012-11-04 01:14:27.929986 I VidOutVDPAU: Enabled deinterlacing.<br>> 2012-11-04 01:14:27.930154 I VSYNC: DRMVideoSync: Could not open device /dev/dri/card0, No such file or directory<br>
> 2012-11-04 01:14:27.930260 E Player(0): Video sync method can't support double framerate (refresh rate too low for 2x deint)<br>> 2012-11-04 01:14:27.953072 I VDP: GetFilteredDeint(vdpauadvanced) : vdpau -> 'vdpauadvanced'<br>
> 2012-11-04 01:14:27.985325 I VidOutVDPAU: Enabled deinterlacing.<br>> 2012-11-04 01:14:27.991046 I Player(0): Video timing method: RTC<br>> 2012-11-04 01:14:27.991114 I Player(0): Display Refresh Rate: 23.976 Video Frame Rate: 23.976<br>
><br>> All sorts of things here that confuse me. Why is it enabling deinterlacing for a progressive scan video?<br>> It now says the display refresh rate is 23.976 - but what about that XRandR mode it mentioned earlier? Is it not using that? (My TV doesn't have an info button to tell me what refresh rate is being used)<br>
><br>> However I think the following shows probably what the real problem is:<br>><br>> 2012-11-04 01:14:28.251288 I Player(0): progressive frame seen after 2 interlaced frames<br>> 2012-11-04 01:14:28.251365 I Player(0): A/V predict drop frame, dropping frame to catch up.<br>
> 2012-11-04 01:14:28.251643 I Player(0): Waiting for video buffers...<br>> 2012-11-04 01:14:28.285566 I VDPAU: Added 2 output surfaces (total 4, max 4)<br>> 2012-11-04 01:14:28.392047 I Player(0): Disabled deinterlacing<br>
> 2012-11-04 01:14:28.395075 I Player(0): Video is 4.08495 frames behind audio (too slow), dropping frame to catch up.<br>> 2012-11-04 01:14:28.395279 I Player(0): Video is 5.29949 frames behind audio (too slow), dropping frame to catch up.<br>
> 2012-11-04 01:14:28.395409 I Player(0): Video is 5.95265 frames behind audio (too slow), dropping frame to catch up.<br>> 2012-11-04 01:14:28.395635 I Player(0): Video is 6.19675 frames behind audio (too slow), dropping frame to catch up.<br>
> 2012-11-04 01:14:28.395946 I Player(0): Video is 6.13408 frames behind audio (too slow), dropping frame to catch up.<br>> 2012-11-04 01:14:28.396179 I Player(0): Video is 5.83533 frames behind audio (too slow), dropping frame to catch up.<br>
> 2012-11-04 01:14:28.396314 I Player(0): Video is 5.35952 frames behind audio (too slow), dropping frame to catch up.<br>> 2012-11-04 01:14:28.396484 I Player(0): Video is 4.7629 frames behind audio (too slow), dropping frame to catch up.<br>
> 2012-11-04 01:14:28.396629 I Player(0): Video is 4.06368 frames behind audio (too slow), dropping frame to catch up.<br>> 2012-11-04 01:14:28.396753 I Player(0): Video is 3.28153 frames behind audio (too slow), dropping frame to catch up.<br>
> 2012-11-04 01:14:28.396846 I Player(0): Waiting for video buffers...<br>> 2012-11-04 01:14:29.654923 I AFD: gopset not set, syncing positionMap<br>> 2012-11-04 01:14:29.654974 I Dec: Resyncing position map. posmapStarted = 0 livetv(0) watchingRec(0)<br>
> 2012-11-04 01:14:29.654998 I AFD: Initial key frame distance: 15.<br>> 2012-11-04 01:14:31.824987 I AFD: Key frame distance changed from 54 to 52.<br>> 2012-11-04 01:14:31.992106 I Player(0): FPS: 25.41 Mean: 39351 Std.Dev: 17122 CPUs: 100% 100%<br>
> 2012-11-04 01:14:35.411139 I AFD: Key frame distance changed from 52 to 86.<br>> 2012-11-04 01:14:35.953958 I Player(0): FPS: 23.99 Mean: 41679 Std.Dev: 485 CPUs: 5% 5%<br>> 2012-11-04 01:14:36.578591 I AFD: Key frame distance changed from 86 to 28.<br>
> 2012-11-04 01:14:38.706655 I AFD: Key frame distance changed from 28 to 51.<br>> 2012-11-04 01:14:39.916859 I Player(0): FPS: 23.99 Mean: 41690 Std.Dev: 691 CPUs: 12% 4%<br>> 2012-11-04 01:14:41.750761 I AFD: Key frame distance changed from 51 to 73.<br>
> 2012-11-04 01:14:43.044159 I AFD: Key frame distance changed from 73 to 31.<br>> 2012-11-04 01:14:43.878762 I Player(0): FPS: 23.99 Mean: 41680 Std.Dev: 533 CPUs: 6% 3%<br>> 2012-11-04 01:14:44.627999 I Player(0): 400 progressive frames seen.<br>
> 2012-11-04 01:14:45.587615 I AFD: Key frame distance changed from 31 to 61.<br>> 2012-11-04 01:14:47.840684 I Player(0): FPS: 23.99 Mean: 41680 Std.Dev: 487 CPUs: 6% 4%<br>> 2012-11-04 01:14:49.550139 I AFD: Key frame distance changed from 61 to 95.<br>
><br>> The video plays very jerkily for the first 5 or 10 seconds then settles down. I've noticed the CPU usage is 100% according to this log during that time. What could be causing that?<br>><br>> Any observations or advice anyone can give will be greatly appreciated.<br>
><br>> Thanks,<br>><br>> Mark<br>> _______________________________________________<br>> mythtv-users mailing list<br>> <a href="mailto:mythtv-users@mythtv.org" target="_blank"><span style="text-decoration:underline;color:#0057ae">mythtv-users@mythtv.org</span></a><br>
> <a href="http://www.mythtv.org/mailman/listinfo/mythtv-users" target="_blank"><span style="text-decoration:underline;color:#0057ae">http://www.mythtv.org/mailman/listinfo/mythtv-users</span></a></p>
<p style="margin-top:12px;margin-bottom:12px;margin-left:40px;margin-right:40px;text-indent:0px">I had pretty much the same issue when i upgraded from .24 to .25. I have practically the same setup as yours, mine is an atom/ion2. I updated the nVidia drivers to the latest version (350.x) and switched to VDPAU Normal profile as mentioned. Now i still have a short delay of the audio playback at tge beginning of playback, but otherwise the video looks great, no jitters or dropped frames.<br>
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</div></div><p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Thanks. I read on the wiki that for glitch-free playback you should only use the 295 series drivers, as something changed in the 3xx series which meant that glitch free would not work. That's why I'm on the 295 driver still. I've also tried the VDPAU Normal profile but it has made no difference to this problem.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">So from the replies I've had there doesn't seem to be anything specifically wrong with my mythtv setup, which is a releif :). This problem is specific to certain mkv files, and those same files also play jerkily in mplayer (which also uses ffmpeg) so I don't think it's actually a mythtv issue.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Does anybody know of any tools which could look for problems in the files I'm having trouble with? I've tried loading them into avidemux but that loads them fine. I'm just intrigued as to why some files are maxing out the CPU and some apparently identical ones are not.</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Thanks,</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> </p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px">Mark</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"><br><br></p></div></blockquote><div><br><br>mediainfo will give quite a lot of information<br></div></div></div>