[mythtv-users] HD Video Stuttering

[Jim Oltman]

On Tue, Nov 15, 2011 at 10:49 AM, Jim Oltman <jim.oltman at gmail.com> wrote:

> I'm having an issue with my MythFrontEnd stuttering on high bandwidth
> files.  It seems to be mostly m2ts files.  The video slows up, and the
> audio drops.  In a second or more everything returns to normal.  I think
> I've traced this down to a vdpaubuffersize issue.  I have added the custom
> filter to increase the buffer size to 32.  It happened again after I did
> that, although it did take longer this time around.  I also added the
> vdpauhqscaling, but I read that could cause an issue.  I removed hq scaling
> and am testing it now.  OK, it just happened again.  But this time it
> didn't drop any audio.  The video just stuttered.  Any help would be
> appreciated.  Thanks!
>
> Attached is the log.  Hardware:
>
> Intel E7400
> 4GB of RAM
> nVidia GT 430, HDMI video/audio to a Denon AVR-3312CI (successfully
> decoding Dolby TrueHD and DTS MasterHD) which is connected to my Samsung
> LN52A650 tv
> Mythbuntu 10.10 x64 using JYA's repos:
>
> lsb_release -a
> LSB Version:
>  core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch
> Distributor ID: Ubuntu
> Description:    Ubuntu 10.10
> Release:        10.10
> Codename:       maverick
>
> cat /proc/driver/nvidia/version
> NVRM version: NVIDIA UNIX x86_64 Kernel Module  260.19.06  Mon Sep 13
> 04:29:19 PDT 2010
> GCC version:  gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)
>
> I'm confused on the nVidia version.  I thought JYA had an up to date
> version of nVidia drivers.  I think I'm several revs behind and not sure
> how to update.
>
> mythfrontend --version
> xprop:  unable to open display ''
> Please attach all output as a file in bug reports.
> MythTV Version   : v0.24.1-271-g1f83c0d
> MythTV Branch    : jyavenard/backports/fixes/0.24
> Network Protocol : 63
> Library API      : 0.24.20110505-1
> QT Version       : 4.7.0
> Options compiled in:
>  linux profile using_alsa using_oss using_pulse using_pulseoutput
> using_backend using_bindings_perl using_bindings_python using_dvb
> using_firewire using_frontend using_hdhomerun using_hdpvr using_iptv
> using_ivtv using_joystick_menu using_lirc using_mheg using_opengl_video
> using_opengl_vsync using_qtdbus using_qtwebkit using_v4l using_x11
> using_xrandr using_xv using_bindings_perl using_bindings_python
> using_mythtranscode using_opengl using_vdpau using_ffmpeg_threads
> using_live using_mheg
>

Anyone have any ideas on this?  Am I on the right track with
'vdpaubuffersize'?
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