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+---- Thread: MythTV MPEG4 video problems (playing at 2x speed) (/showthread.php?tid=39503)
MythTV MPEG4 video problems (playing at 2x speed) - fnordpojk - 2008-10-26
Hey,
I'm running Mythbuntu hardy x86 (current as of today) with the hardy PPAs (SVN r15850), and I wanted to try out the MythTV support to see if I could get rid of mythfrontend.
Everything works well up until I try playing something. When I play a recording, it runs at 2x speed (even though XBMC thinks it's at standard playback) with no sound, and when I play LiveTV it runs at normal speed, but with no sound.
The debug log is at http://www.layabout.se/fnord-xbmc.log - hope it helps.
If I play the recording in mplayer, it says this:
fnord@gentry:/var/lib/mythtv/recordings$ mplayer -demuxer lavf 2069_20081020000000.mpg
MPlayer 1.0rc2-4.2.3 © 2000-2007 MPlayer Team
CPU: Intel® Core™2 CPU 6420 @ 2.13GHz (Family: 6, Model: 15, Stepping: 6)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
Playing 2069_20081020000000.mpg.
libavformat file format detected.
[lavf] Video stream found, -vid 0
[lavf] Audio stream found, -aid 1
[lavf] Audio stream found, -aid 2
VIDEO: [mpg2] 544x576 0bpp 25.000 fps 15000.0 kbps (1831.1 kbyte/s)
xscreensaver_disable: Could not find XScreenSaver window.
GNOME screensaver disabled
==========================================================================
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
==========================================================================
==========================================================================
Forced audio codec: mad
Opening audio decoder: [libmad] libmad mpeg audio decoder
AUDIO: 48000 Hz, 1 ch, s16le, 96.0 kbit/12.50% (ratio: 12000->96000)
Selected audio codec: [mad] afm: libmad (libMAD MPEG layer 1-2-3)
==========================================================================
AO: [pulse] Failed to connect to server: Connection refused
AO: [alsa] 48000Hz 1ch s16le (2 bytes per sample)
Starting playback...
VDec: vo config request - 544 x 576 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
VO: [xv] 544x576 => 768x576 Planar YV12
GNOME screensaver enabled-0.200 ct: -0.108 28/ 28 6% 0% 2.1% 0 0
..and plays beautifully, with audio.
Audio track 2, however, which should be AC3 and should play fine, doesn't:
Forced audio codec: mad
Opening audio decoder: [liba52] AC3 decoding with liba52
Using SSE optimized IMDCT transform
Too many video packets in the buffer: (457 in 8414820 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.
A52 sync failed
ADecoder init failed
ADecoder init failed
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
Too many video packets in the buffer: (457 in 8414820 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.
Unknown/missing audio format -> no sound
ADecoder init failed
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
No accelerated IMDCT transform found
Too many video packets in the buffer: (457 in 8414820 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.
AC3/DTS sync failed
ADecoder init failed
ADecoder init failed
Cannot find codec for audio format 0x2000.
Read DOCS/HTML/en/codecs.html!
Audio: no sound
Starting playback...
Might this be what's tripping XBMC up? I'm transcoding all recordings to MPEG4 in MythTV, with the settings for "High Quality": MPEG-4, bitrate 2200, max quality 2, min quality 15, max quality diff 3 and scale bitrate for frame size.
Help!
/fnord
- elupus - 2008-10-26
You have set your default audio device to "iec958". Only your passthrough device should be set to that. Restore it to "default"