[linux-dvb] Re: vbv delay/buffer overflows on VBR statmux

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Oliver Endriss wrote:
> 
> Klaus Schmidinger wrote:
> > Marcus Metzler wrote:
> > > It is no problem to free 20k, you just have to reduce the OSD
> > > memory. Of course, Klaus will kill you if you do that :-).
> > > They should have put more memory on the board.
> >
> > Well, there is one other way, if you can do without teletext
> > re-insertion. The memory used for this just happens to be 20KB, too,
> > and it also is taken from the SDRAM. Disabling teletext re-insertion
> > can give these 20KB right to the video buffer, without decreasing the
> > OSD.
> 
> Argh. ;-)
> On most stations teletext is much better than EPG.
> I don't want to loose this feature right now.
> 
> Could the memory setup be made customizable?
> - mpeg buffer size
> - osd memory size
> - teletext reinsertion on/off
> etc.

Thinking about it: since TT re-insertion is only feasible during live tv,
that memory is unused during replay. Maybe we could dynamically assign
the video buffer size so that it has 230KB during replay (without TT
re-insertion) and 210KB during live TV (with TT).

@Ralph: would this be technically possible, or is there a reason that
        forbids this? 

> Has anyone ever tried to upgrade a DVB-S to 4MB SDRAM?
> This would solve all memory problems.
> I'm dreaming of a full-screen true-color osd. ;-)
> Well, this would be an option for some hardware hackers only.

I'd be willing to try this if I knew where to get the necessary chip, and
whether the hardware (i.e. the board layout) is able to do this.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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