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Ticket #7570: Frontend occasionally hangs on playback with VDPAU

  

 
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mythtv at cvs

Nov 14, 2009, 8:16 PM

Post #1 of 20 (2204 views)
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Ticket #7570: Frontend occasionally hangs on playback with VDPAU
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: janne
Type: defect | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
On a few occasions the DVB-T video has hung (no command responses) when
starting a TV recorded video (mpeg2)

So all I see is "Please wait..." and I have to kill frontend task to
recover.

Frontend log follows:
2009-11-14 17:10:31.413 TV: Attempting to change from None to Watching
WatchingPreRecorded
2009-11-14 17:10:31.495 TV: StartPlayer(0, Watching WatchingPreRecorded,
main) -- begin
2009-11-14 17:10:31.605 [mp2 @ 0x4e2f6a0]Header missing
2009-11-14 17:10:31.776 AFD: Opened codec 0xd195c30, id(MPEG2VIDEO)
type(Video)
2009-11-14 17:10:31.776 AFD: codec MP2 has 2 channels
2009-11-14 17:10:31.776 AFD: Opened codec 0xd8c2320, id(MP2) type(Audio)
2009-11-14 17:10:31.782 Opening audio device 'default'. ch 2(2) sr 48000
2009-11-14 17:10:31.783 Opening ALSA audio device 'default'.
2009-11-14 17:10:33.339 WriteAudio: buffer underrun
2009-11-14 17:10:33.376 VidOutVDPAU Error: Failed to initialise VDPAU
2009-11-14 17:10:33.399 VideoOutput, Error: Not compiled with any useable
video output method.
2009-11-14 17:10:33.399 NVP(1), Error: Couldn't create VideoOutput
instance. Exiting..
2009-11-14 17:10:33.399 Unable to initialize video.
2009-11-14 17:10:53.070 playCtx, Error: StartDecoderThread() Failed to
startdecoder
2009-11-14 17:10:53.070 TV: StartPlayer(0, Watching WatchingPreRecorded,
main) — end error
===
I have Nvidia 190.32 running Release-0-22-fixes/mythtv/ [22759]

Note is it possible to have some sort of error handling on the playback
thread to recover from crashes like this..

do you require any more debug output?

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570>
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mythtv at cvs

Nov 14, 2009, 8:19 PM

Post #2 of 20 (2171 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: assigned
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
Changes (by danielk):

* owner: janne => markk
* status: new => assigned


--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:1>
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mythtv at cvs

Nov 14, 2009, 11:57 PM

Post #3 of 20 (2161 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
Changes (by markk):

* status: assigned => accepted


Comment:

Can you please attach the output of 'mythfrontend -v playback' from a
failed attempt at playback.

thanks

Mark

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:2>
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mythtv at cvs

Nov 15, 2009, 12:30 AM

Post #4 of 20 (2154 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by paul@…):

I did some messing around and finally reproduced it, but there are some
issues with prebuffering also in here but the last 100 lines is where all
the action is for the crash

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:3>
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mythtv at cvs

Nov 22, 2009, 9:24 PM

Post #5 of 20 (2070 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by markk):

(In [22890]) Add an explicit warning around video memory shortages when
using VDPAU
in release-0-22-fixes as well as advice on how to rectify the problem.
Refs #7493 and #7570.

I'm not applying to trunk as this whole section of code will change for
0.23.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:4>
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mythtv at cvs

Nov 23, 2009, 12:06 AM

Post #6 of 20 (2074 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by paul@…):

so do I need a Nvidia card with more memory? it looks like 512Mb is still
border line?
and what vdpaubuffersize should I use?

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:5>
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mythtv at cvs

Dec 21, 2009, 9:28 PM

Post #7 of 20 (1900 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: unknown
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by Douglas Goldstein <cardoe@…>):

paul,

I've got an NVIDIA ION based board that has 512mb on it. I experience the
same issue (and even get the new error message that he's added in r22890).
However markk has the same hardware by a different manufacture (My setup
is an ASRock and his I believe was Zotac)

However an interesting workaround has presented itself. My recorded
content is MPEG2 (PVR-150 and pcHDTV HD-5500) while items played by
MythVideo are H264 files. If I wait about 4 hours between using my setup
and then attempt to play something MythTV recorded (MPEG2 format), it will
fail. However if I first go into MythVideo and play a H264 file and then
exit out and then play a recorded show, then it works.

This still feels like there is some bug in the Watch Recordings side of
the house.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:6>
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mythtv at cvs

Jan 27, 2010, 4:57 AM

Post #8 of 20 (1714 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
Changes (by markk):

* status: accepted => infoneeded
* milestone: unknown => 0.23


Comment:

Can anyone confirm whether or not this is still an issue in trunk?

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:7>
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mythtv at cvs

Jan 29, 2010, 11:58 PM

Post #9 of 20 (1692 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by anonymous):

Not sure if I was having the same issue or not. I was having frontend
lockups while playing high motion video. Particularly about 4 or 5 in the
course of a basketball game. It would take about 2 minutes before
playback would restart with av sync way off. In that time I was unable to
start new processes on the frontend machine or connect via ssh. An
exisisting ssh connection would allow me to kill mythfrontend.

Since the vdpau changes in trunk, I have watched 3 games without a single
lockup. This is very much improved.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:8>
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mythtv at cvs

Jan 30, 2010, 7:43 AM

Post #10 of 20 (1690 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by Marc Tousignant <myrdhn@…>):

I am seeing a similar issue with trunk but it only started recently, or I
was just not watching the right recordings. Might be unrelated.

MythTV Version : 23358M
MythTV Branch : trunk
Network Protocol : 56
Library API : 0.23.20100127-1
QT Version : 4.5.3
Options compiled in:
linux debug using_oss using_alsa using_backend using_frontend using_lirc
using_mheg using_opengl_video using_opengl_vsync using_qtwebkit using_v4l
using_x11 using_xrandr using_xv using_bindings_perl using_bindings_python
using_opengl using_vdpau using_ffmpeg_threads using_mheg

It does not happen all the time and atfirst I was thinking it had
something to do with commercials as that seems to be the most prevalent
time I have been seeing this issue.
My frontend is locking up on standard def channels (PVR-500 recordings) on
commercials or occasionally on the black frame between the commercials and
the show I am watching.
I have yet to see this issue happen on any recordings made from my
HD-5000's. Which is why I think it only started recently as I was watching
those recordings and not the ones from the PVR-500.
I never let it continue like the last reporter, I always killed the
process and let my scripts reload it and I was good to go. However, if I
attempted to rewatch the same section of video it would lock again, I had
to be carefull to jump over that section.
I'll attempt to get a dbg log on the next one and submit it.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:9>
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mythtv at cvs

Feb 4, 2010, 8:37 PM

Post #11 of 20 (1648 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by Marc Tousignant <myrdhn@…>):

Ok, finally found a recording to duplicate the issue, not going to delete
this one incase someone wants a sample.

Here is what is going on according to the frontend log.

'video_output' mean = '50119.30', std. dev. = '105827.13', fps = '19.95'
'video_output' mean = '33367.29', std. dev. = '391.15', fps = '29.97'
'video_output' mean = '33363.51', std. dev. = '333.66', fps = '29.97'
2010-02-04 23:29:06.643 NVP(0): 400 interlaced frames seen.
'video_output' mean = '33361.32', std. dev. = '366.38', fps = '29.97'
2010-02-04 23:29:08.316 VDP: Accepting: cmp(>= 1280 720) dec(vdpau)
cpus(0) rend(vdpau) osd(vdpau) osdfade(disabled) deint(vdpauadvanced,none)
filt()
2010-02-04 23:29:08.316 VDP: Accepting: cmp(>= 0 0) dec(vdpau) cpus(0)
rend(vdpau) osd(vdpau) osdfade(disabled) deint(vdpauadvanced,none) filt()
2010-02-04 23:29:08.317 VDP: LoadBestPreferences(2048x2048, 0)
2010-02-04 23:29:08.318 VDP: LoadBestPreferences(2048x2048, 60)
2010-02-04 23:29:08.319 VDP: LoadBestPreferences(704x480, 60)
2010-02-04 23:29:08.320 VidOutVDPAU: InputChanged(704,480,1.33333) 'MPEG2
VDPAU'->'MPEG2 VDPAU'
2010-02-04 23:29:08.327 VidOutVDPAU: DiscardFrames(1)
2010-02-04 23:29:08.327 VideoBuffers::DiscardFrames(1): uUDULUUAUuUAAUDUU
2010-02-04 23:29:08.328 VideoBuffers::DiscardFrames(): AADAAAAAAAAAAADAA
-- done()
2010-02-04 23:29:08.328 VideoBuffers::DiscardFrames(1): AADAAAAAAAAAAADAA
-- done
2010-02-04 23:29:08.329 VidOutVDPAU: DiscardFrames() 3: AADAAAAAAAAAAADAA
-- done()

Backtrace to be attached shortly.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:10>
MythTV <http://www.mythtv.org/>
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mythtv at cvs

Feb 7, 2010, 3:09 AM

Post #12 of 20 (1604 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by anonymous):

Firstly, can I ask that people stop posting with clearly different issues
and unrelated comments. It just means bugs take longer to resolve due to
the overhead of processing the noise and the inevitable red herrings
introduced. If you're not sure, just create a new ticket.

Marc - your issue should have been fixed in r23467.

Paul/Doug - I'm still no closer to actually understanding the underlying
problem in your cases but I'm wondering whether it is somehow related to
#7853. mpeg2 seems to be a common issue though the point initialisation
fails is clearly different. It may be that you both have mpeg2 streams
that have a similar characteristic, the driver is not releasing something
internally and hence initialisation of the next playback fails. I will
post a debug patch for testing.

Mark

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:11>
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mythtv at cvs

Feb 7, 2010, 12:00 PM

Post #13 of 20 (1594 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: infoneeded
Priority: minor | Milestone: 0.23
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by Paul Wilson <paul@…>):

thanks Mark,
note I haven't seen a crash in the last few weeks, so I'm probably not a
good test case any more, and I have also upgraded my video card to a GT220
which has improved performance and stability, so I think it was some
memory/buffer shortage in my old 8400 card, but definitely some
crash/recovery would be good during in video playback would be good
Paul

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:12>
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mythtv at cvs

Feb 26, 2010, 2:06 AM

Post #14 of 20 (1355 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: assigned
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
Changes (by markk):

* status: infoneeded => assigned
* milestone: 0.23 => 0.24


Comment:

Pushing back to 0.24

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:13>
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mythtv at cvs

Feb 26, 2010, 2:06 AM

Post #15 of 20 (1353 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------
Changes (by markk):

* status: assigned => accepted


--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:14>
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mythtv at cvs

Apr 11, 2010, 8:04 PM

Post #16 of 20 (1032 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 0
--------------------------------------------+-------------------------------

Comment(by anonymous):

I am having this problem with an ION board as well running 0.23rc2. It
happens so often as to make the system almost unusable. Most times, after
playing 1 264 video, nothing else in the system will play, and just hang
on the "Please wait" screen.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:15>
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mythtv at cvs

Apr 11, 2010, 8:06 PM

Post #17 of 20 (1032 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Mlocked: 1
--------------------------------------------+-------------------------------
Changes (by robertm):

* mlocked: 0 => 1


Comment:

You comment adds nothing to this discussion, I award you no points for
this round.

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:16>
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mythtv at cvs

Aug 14, 2010, 2:18 AM

Post #18 of 20 (587 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Resolution:
Keywords: | Ticket locked: 1
--------------------------------------------+-------------------------------

Comment (by markk):

(In [25644]) Improved GPU memory management.

This expands some pre-existing cache clearing code in the D3D9 and VDPAU
painters to include the OpenGL painter and adds a public method to clear
the GPU memory cache on request. The D3D9 and VDPAU renderers then ask
the main UI painter to clear its cache before initialisation.

This allows video cards with only 256Mb of memory to work when using
VDPAU rendering - BUT only when using the VDPAU painter.

Unfortunately, while profiling clearly shows the OpenGL painter clears
large chunks of video memory, that memory is not made available to VDPAU
and hence there is no real benefit.

The painter caches could also be managed more effectively by tracking
estimated memory consumption.

Refs #7570

--
Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:17>
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mythtv at cvs

Aug 14, 2010, 2:28 AM

Post #19 of 20 (572 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: accepted
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Resolution:
Keywords: | Ticket locked: 1
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Comment (by markk):

(In [25645]) Add VDPAU as a UI painter option in the Appearance settings.

The VDPAU painter is fully functional and using it allows for improved
memory management when using VDPAU for video acceleration.

See r25644. Refs#7570

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:18>
MythTV <http://www.mythtv.org/>
MythTV
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Sep 13, 2010, 5:51 AM

Post #20 of 20 (476 views)
Permalink
Re: Ticket #7570: Frontend occasionally hangs on playback with VDPAU [In reply to]
#7570: Frontend occasionally hangs on playback with VDPAU
--------------------------------------------+-------------------------------
Reporter: Paul <paul@…> | Owner: markk
Type: defect | Status: closed
Priority: minor | Milestone: 0.24
Component: MythTV - Video Playback | Version: 0.22
Severity: medium | Resolution: Invalid
Keywords: | Ticket locked: 1
--------------------------------------------+-------------------------------
Changes (by markk):

* status: accepted => closed
* resolution: => Invalid


Comment:

Marked as invalid but in reality the code has changed a lot in the last 10
months and there is simply too much noise on this ticket.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/7570#comment:19>
MythTV <http://www.mythtv.org/>
MythTV Media Center
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