[mythtv-users] Re : h264 HD channels not visible correcty

Xavier de Almeida xavierdealmeida at yahoo.fr
Thu Jul 8 07:47:59 UTC 2010


Hello,

Is this the right place to ask for such help/questions?

at least I d like to understand where this issue comes from (myself, the signal 
or the config of MythTV)

Merci
XabiX



________________________________
De : Xavier de Almeida <xavierdealmeida at yahoo.fr>
Ŕ : mythtv-users at mythtv.org
Envoyé le : Lun 5 juillet 2010, 14h 00min 20s
Objet : h264 HD channels not visible correcty


Hello,


I am wondering if I can't see HD channels correctly because of a bad reception 
or because of a configuration issue. I can see non HD channels with no problem.

I got a Signal of 44% and a SNR s/d of 2.1db. Ex:
http://xabix.free.fr/uploads/Capture1.png


Error messages examples:
 
2010-07-05 12:25:25.739 Opening audio device 'plughw:0,3'. ch 2(2) sr 48000 
(reenc 0)
>2010-07-05 12:25:25.739 Opening ALSA audio device 'plughw:0,3'.
>2010-07-05 12:25:25.745 AudioOutput Warning: Mixer attach error -2: Aucun 
>fichier ou dossier de ce type
>
>2010-07-05 12:26:07.764 [h264 @ 0x7ffe70e3f360]mmco: unref short failure
>2010-07-05 12:26:09.161 NVP(0): Prebuffer wait timed out 10 times.
>2010-07-05 12:26:10.961 NVP(0): Prebuffer wait timed out 20 times.
>2010-07-05 12:26:11.926 VideoOutputXv: Desired video renderer 'xvmc-blit' not 
>available.
>                        codec 'H.264' makes 'xv-blit,xshm,xlib,' available, 
>using 'xv-blit' instead.
>2010-07-05 12:26:11.929 VideoOutputXv: XVideo Adaptor Name: 'Intel(R) Textured 
>Video'
>2010-07-05 12:26:12.025 AFD: Opened codec 0x7ffe3c957670, id(H264) type(Video)
>2010-07-05 12:26:12.025 AFD: codec E-AC3 has 2 channels
>2010-07-05 12:26:12.026 AFD: Opened codec 0x7ffe3cf10870, id(E-AC3) type(Audio)
>2010-07-05 12:26:12.026 AFD: codec E-AC3 has 2 channels
>2010-07-05 12:26:12.026 AFD: Opened codec 0x7ffe3cf10cb0, id(E-AC3) type(Audio)
>2010-07-05 12:26:12.026 AFD: Opened codec 0x7ffe3cf110f0, id(DVB_SUBTITLE) 
>type(Subtitle)
>
>2010-07-05 12:26:15.084 [h264 @ 0x7ffe70e3f360]error while decoding MB 61 66, 
>bytestream (796)
>2010-07-05 12:26:15.084 [h264 @ 0x7ffe70e3f360]Too many slices, increase 
>MAX_SLICES and recompile
>
>2010-07-05 12:26:12.347 [h264 @ 0x7ffe70e3f360]number of reference frames 
>exceeds max (probably corrupt input), discarding one
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]top block unavailable for 
>requested intra4x4 mode -1 at 35 48
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]error while decoding MB 35 48, 
>bytestream (12575)
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]top block unavailable for 
>requested intra4x4 mode -1 at 2 60
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]error while decoding MB 2 60, 
>bytestream (8437)
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]reference picture missing during 
>reorder
>2010-07-05 12:26:12.353 [h264 @ 0x7ffe70e3f360]Missing reference picture
>2010-07-05 12:26:12.355 [h264 @ 0x7ffe70e3f360]Reference 2 >= 2
>2010-07-05 12:26:12.355 [h264 @ 0x7ffe70e3f360]error while decoding MB 14 35, 
>bytestream (5806)
full log at http://xabix.free.fr/uploads/mythfrontend.log

I am using the XvMC Standard decoder and the following intel integrated video 
card Clarkdale i3 530:
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated 
Graphics Controller (rev 12)
>        Subsystem: Giga-byte Technology Device d000
>        Flags: bus master, fast devsel, latency 0, IRQ 30
>        Memory at fb400000 (64-bit, non-prefetchable) [size=4M]
>        Memory at e0000000 (64-bit, prefetchable) [size=256M]
>        I/O ports at ff00 [size=8]
>        Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 
>Enable+
>        Capabilities: [d0] Power Management version 2
>        Capabilities: [a4] PCIe advanced features <?>
>        Kernel driver in use: i915
>        Kernel modules: i915

Kernel 2.6.33

Any idea of what could be the issue?

Thanks
XabiX


FYI
xabix at HTPC:~$ ffmpeg 
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice 
Bellard, et al.
  configuration: --extra-version=4:0.5.1-1ubuntu1 --prefix=/usr 
--enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib 
--enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora 
--enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping 
--disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc 
--enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared 
--disable-static
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 1 / 52.20. 1
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Mar  4 2010 12:41:55, gcc: 4.4.3


      
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