[vdr] Re: vdr + dxr3 problem

[Seppo Ingalsuo <seppo.ingalsuo@iki.fi>]

pe, 18-04-2003 kello 22:39, Kai Moeller kirjoitti:
> On Friday 18 April 2003 20:16, Jarkko Santala wrote:
> > Hi all,
> >
> > I started using vdr with dxr3 plug-in yesterday and its now working pretty
> > well. There's a small problem with the stream, every now and then (once a
> > minute to once in five minutes) the picture shows a frame or two of
> > greenish distortion and a few frames of just black and then returns to
> > normal. A/V sync is not lost, but sometimes there's also a small snap in
> > the sound.
> 
> Yes, that's a new bit error handling introduced in 0.1.7. For 0.1.8 I will 
> change this again because it seems to cause more trouble on systems where bit 
> errors are likely. On systems which have no problems with bit errors (like 
> mine) it doesn't provide any advantage.

These black frames and green flashes gets into Finnish DVB-T recordings
if watched with vdr (1.1.27) and dxr3 plugin (0.1.7a). The problems are
repeatable and occur in the same places in the recordings.

When playing the same vdr recordings with mplayer there are no problems
in picture or sound quality in the positions where vdr playback quality
is rather poor. Could the problem with "cDxr3DemuxDevice::DemuxPes()
ePesFrameError skipping data and resync" be due some bugs/features in
dxr3 plugin which do not show up with DVB-S? Perhaps not really bit
errors?

I improved recently antenna system quality significantly and BER
(reported by tzap) went down from something like 0xB000 to 0x0100 or
less but the frequency of these errors is still about the same.

> > The DVB and em8300 drivers are fresh from cvs, vdr-1.1.27 and dxr3-0.1.7a.
> >
> > I wasn't having this problem before with my previous setup of older set of
> > drivers and a combination of tzap + dvbstream + mplayer. Any clues on what
> > to try would be welcome, I can also test patches.
> >
> 
> Just wait a little bit a new version is coming soon.

If this is not adressed in the new version I can try to find out more if
you have ideas what to check.

Thanks,
Seppo


> 
> Have fun,
> 
> Kai
> 
> 
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-- 
Seppo Ingalsuo - seppo.ingalsuo@iki.fi



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