Re: DVB Playback Issues

On 19 Dec 2011, [email protected] wrote:

> Thanks for taking the time to write that very thorough response. I tried
your
>     suggestions and I'm still having issues. I compiled liba52 and
>     recompiled mplayer. I also noticed that I was missing my
>     /etc/mplayer/codecs.conf file, so I copied it from the source.
> Here are some of the commands I ran and their output.

Some of the errors look familiar.  I think I tried liba52 for some time
and then I was hinted to use '-ac ffac3'.  Do you have that codec?  I
have these entries in ~/.mplayer/config

   # Drop frames to sync A/V
   framedrop=yes

   # Add a cache to smooth playback.
   cache=4096
   # start when 5% full.
   #cache-min=10
   cache-min=25

   # No software scaling.
   zoom=no

   # Use alsa drivers.
   ao=alsa
   ac=ffac3,

   # Don't change video out.
   fixed-vo=yes

   #Allow OSD menus
   menu=yes

Here is mplayer playing a captured stream on my PC,

$ mplayer.wrapper sample.ts
MPlayer SVN-r34448-4.6.2 (C) 2000-2011 MPlayer Team

Playing sample.ts.
Cache fill:  0.00% (0 bytes)

TS file format detected.
VIDEO MPEG2(pid=33) AUDIO A52(pid=36) NO SUBS (yet)!  PROGRAM N. 2
VIDEO:  MPEG2  1920x1080  (aspect 3)  29.970 fps  65000.0 kbps (8125.0
kbyte/s)
Load subtitles in ./
==========================================================================
Trying to force video codec driver family libmpeg2...
Opening video decoder: [libmpeg2] libmpeg2 MPEG 1/2 Video decoder
Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
==========================================================================
==========================================================================
Forced audio codec: ffac3
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)
==========================================================================
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 1920x1080 => 1920x1080 Planar YV12  [fs]
A:48851.1 V:48851.5 A-V: -0.371 ct: -0.174  60/ 60 48%  5%  1.4% 8 0 50%

Note, the comma suggests 'ffac3'.  Is it just this channel that has
strange sound or do you only get a few channels?  Are you using an
antenna?  Is the station farther away than other stations?

My system has an older Nvidia card and is a 2.4GHz Celeron.  I can play
lots of different channels without any skipping.  However, Nvidia didn't
port the 'vdpau' to my graphics card.  I just use '-vo xv'.  You might
try this to see if 'vdpau' is having some sort of issues.

I did have problems with video playback when my CPU fan was
malfunctioning and it was 'thermal throttling' without any kind of
notice.  You might get 'lmsensors' package to verify that everything is
working perfectly with your system, but I think it is the audio codec in
your case.

Hth,
Bill Pringlemeir.