[mythtv-users] No HD playback on OPENGL, xvmc-blit' not available

Ben Coleman arrikhan_mail at yahoo.com.au
Sat Jul 18 03:38:00 UTC 2009

Ever since upgrading from 0.20 to 0.21 and rebuilding my separate 
frontend/backend setup OS, HD content won't play normally. The preview 
window works fine, the audio works but the video is just blank.

HD content used to work prior to upgrading. The frontend I'm is using 
consists of the following ...

NVIDIA driver ( NVIDIA UNIX x86_64 Kernel Module  180.51)
MOBO: ASUS A8N-VM CSM using onboard graphics chip
Standard Debian testing build (2.6.26-2-amd64)

Myth version from debian-multimedia (unstable, also tried originally on 

mythfe-lounge:/var/log/mythtv# mythfrontend --version
Please include all output in bug reports.
MythTV Version   : Unknown
MythTV Branch    : branches/release-0-21-fixes
Library API      : 0.21.20080304-1
Network Protocol : 40
Options compiled in:
 linux profile using_oss using_alsa using_pulse using_arts using_jack 
using_backend using_dbox2 using_dvb using_firewire using_frontend 
using_hdhomerun using_iptv using_ivtv using_joystick_menu using_libfftw3 
using_lirc using_opengl_vsync using_opengl_video using_v4l using_x11 
using_xrandr using_xv using_xvmc using_xvmcw using_xvmc_vld 
using_glx_proc_addr_arb using_bindings_perl using_bindings_python 
using_opengl using_ffmpeg_threads using_libavc_5_3 using_live

The preview window shows the content fine. Also, mplayer plays demo HD 
content fine.

Can anyone assist finding the fault here? It appears only when Myth 
tries to play the HD content that it trips up. It looks to be that its 
defaulting to OPENGL and for some reason, can't actually display content 
in this fashion

Log file as follows..

2009-07-18 13:31:29.538 TV: Attempting to change from None to 
2009-07-18 13:31:29.642 DPMS Deactivated
2009-07-18 13:31:30.231 AFD: Opened codec 0x27c9380, id(MPEG2VIDEO) 
2009-07-18 13:31:30.231 AFD: codec AC3 has 6 channels
No accelerated IMDCT transform found
2009-07-18 13:31:30.232 AFD: Opened codec 0x27c8a90, id(AC3) type(Audio)
2009-07-18 13:31:30.234 Opening audio device 'default'. ch 6(2) sr 48000
2009-07-18 13:31:30.234 Opening ALSA audio device 'default'.
2009-07-18 13:31:30.258 Opening audio device 'default'. ch 2(2) sr 48000
2009-07-18 13:31:30.258 Opening ALSA audio device 'default'.
2009-07-18 13:31:30.487 VideoOutputXv: Desired video renderer 
'xvmc-blit' not available.
                        codec 'MPEG2' makes 'opengl,xv-blit,xshm,xlib,' 
available, using 'opengl' instead.
2009-07-18 13:31:30.698 OSD Theme Dimensions W: 640 H: 480
2009-07-18 13:31:30.826 Unable to find font:
                        No OSD will be displayed.
2009-07-18 13:31:30.828 Unable to find font:
                        No OSD will be displayed.
2009-07-18 13:31:30.828 OSD, Error: A CC708 font is missing
2009-07-18 13:31:30.830 Unable to find font:
                        No OSD will be displayed.
2009-07-18 13:31:30.965 TV: Changing from None to WatchingPreRecorded
2009-07-18 13:31:30.969 The realtime priority setting is not enabled.
2009-07-18 13:31:31.072 Video timing method: USleep with busy wait
2009-07-18 13:31:38.243 DPMS Reactivated.

Any help would be appreciated greatly.

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