[mythtv] DVD dropping back to the frontend at the menu. PCM_DVD problem?

Paul Harrison mythtv at sky.com
Wed Nov 21 14:00:00 UTC 2012


On 11/11/12 16:51, Neil Salstrom wrote:
> I've found several DVD's which play fine in VLC and Movie Player yet
> drop back to the frontend as soon as the DVD menu is reached.  I'm
> wondering if there is something similar to the old bugs #8134 and
> #5989.
>
> http://code.mythtv.org/trac/ticket/8134
> http://code.mythtv.org/trac/ticket/5989
>
> These are some workout and Yoga DVD's of my wife's.  I'm not sure how
> stringent the DVD's were mastered according to standards.  Maybe they
> did something unusual with the audio?  What makes me wonder about the
> similarities to the bugs listed is the PCM_DVD, type Audio, bitrate 0
> listed.
>
> If you need any more info please let me know!
>
> Here is a frontend log using -v playback,audio and --loglevel debug :
>
> 2012-11-11 08:33:28.549806 N  AudioPlayer: Enabling Audio
> 2012-11-11 08:33:28.549816 I  AFD: No video track found/selected.
> 2012-11-11 08:33:28.551371 I  Player(0): Disabled deinterlacing
> 2012-11-11 08:33:28.551416 I  AO: OutputAudioLoop: Play Event
> 2012-11-11 08:33:28.567620 I  AFD: Key frame distance changed from 15 to 7.
> 2012-11-11 08:33:28.571453 I  AFD: streams_changed 0x1092f430 -- stream count 2
> 2012-11-11 08:33:28.571498 I  AFD: Stream #0, has id 0x1e0 codec id
> MPEG2VIDEO, type Video, bitrate 8000000 at 0x12c83f00
> 2012-11-11 08:33:28.571514 I  AFD: Looking for decoder for MPEG2VIDEO
> 2012-11-11 08:33:28.571554 I  AFD: Stream #1, has id 0xa0 codec id
> PCM_DVD, type Audio, bitrate 0 at 0x7f2a040615e0
> 2012-11-11 08:33:28.571571 I  AFD: codec PCM_DVD has 0 channels
> 2012-11-11 08:33:28.571582 I  AFD: Looking for decoder for PCM_DVD
> 2012-11-11 08:33:28.571660 E  AFD: Could not open codec
> 0x7f2a042aee80, id(PCM_DVD) type(Audio) aborting. reason -22
> 2012-11-11 08:33:28.571676 I  AFD: No video track found/selected.
> 2012-11-11 08:33:28.571715 E  AFD: No context
> 2012-11-11 08:33:28.571755 E  decoding error
>                          eno: Success (0)
> 2012-11-11 08:33:28.575575 I  VDP: GetFilteredDeint() : vdpau ->
> 'vdpauadvanceddoublerate'
> 2012-11-11 08:33:28.576908 I  VidOutVDPAU: Enabled deinterlacing.
> 2012-11-11 08:33:28.576940 I  Player(0): Enabled deinterlacing
> 2012-11-11 08:33:28.809189 I  VidOutVDPAU: UpdatePauseFrame() ADAAADAAAADuLA
> 2012-11-11 08:33:28.810543 I  Player(0): Disabled deinterlacing
> 2012-11-11 08:33:29.309517 D  LCDdevice: switchToChannel
>
> mythfrontend --version
> Please attach all output as a file in bug reports.
> MythTV Version : v0.26.0-31-gcd2e061-dirty
> MythTV Branch : fixes/0.26
> Network Protocol : 75
> Library API : 0.26.20120822-1
> QT Version : 4.8.1
> Options compiled in:
>   linux profile use_hidesyms using_alsa using_oss using_pulse
> using_backend using_bindings_perl using_bindings_python
> using_bindings_php using_dvb using_frontend using_hdhomerun using_iptv
> using_libcrypto using_libdns_sd using_libxml2 using_lirc using_mheg
> using_opengl_video using_qtwebkit using_qtscript using_qtdbus
> using_v4l2 using_x11 using_xrandr using_xv using_bindings_perl
> using_bindings_python using_bindings_php using_mythtranscode
> using_opengl using_vaapi using_vdpau using_ffmpeg_threads using_live
> using_mheg using_libass using_libxml2
>
>
> Thank you!
>

I'm seeing something similar in master as well except there it causes a 
segfault. The problem seems to be the audio is detected as having 0 
channels. Do you know roughly when you first noticed this problem so I 
can narrow down which commit broke things?

Paul H.



More information about the mythtv-dev mailing list