On Freitag, 28. Oktober 2005 19:29, Laz wrote:
> On Thursday 27 October 2005 18:28, you wrote:
> 
> > To enable DLOP_FIELD_PARITY, find where the code sets the
> > configuration on the video layer.  Set the 'options' field of the
> > layer config to include DLOP_FIELD_PARITY (ensuring that flags
> > includes DLCONF_OPTIONS) before calling SetConfiguration().  Then call
> > SetFieldParity(0) on the layer.
> >
> > Here's how I do it.  Note that this is C++/++DFB code so the syntax
> > won't be exactly the same for you.  m_vlayer is the video layer:
> >
> > DFBDisplayLayerConfig layer_config;
> > DFBDisplayLayerDescription layer_desc;
> >
> > m_vlayer.SetCooperativeLevel(DLSCL_EXCLUSIVE);
> > layer_desc = m_vlayer.GetDescription();
> > layer_config.flags = (DFBDisplayLayerConfigFlags) (DLCONF_BUFFERMODE |
> > DLCONF_PIXELFORMAT | DLCONF_OPTIONS);
> > layer_config.buffermode = DLBM_TRIPLE;
> > layer_config.pixelformat = DSPF_YV12;
> > layer_config.options = DLOP_NONE;
> > if (layer_desc.caps & DLCAPS_FIELD_PARITY)
> >      layer_config.options = DLOP_FIELD_PARITY;
> > m_vlayer.SetConfiguration(layer_config);
> > if (layer_desc.caps & DLCAPS_FIELD_PARITY)
> >      m_vlayer.SetFieldParity(0);

I guess I've to make a new option for softdevice: viatv

> 
> OK. I've just had a quick go at implementing this in the DierctFB output of 
> vdr-softdevice. I now have almost perfect A-V sync with no stuttering / 
> jumping in the sound. The picture looks good apart from those channels where 
> the signal is interlaced (BBC 1 + BBC 2 on UK DVB-T for starters). This may 
> not sound much but this is a great improvement for me!
> 
> Just about to test different flipping flags to see if that helps...

Could be an issue with downscaling.
Is your tv a 16:9 one ?
I think they are broadcasting allways 16:9 (4:3 encoded as anamorphic,
pillar boxed 16:9 with AFD descriptors set).

-- 
Stefan Lucke


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