[vdr] Re: Still pictures with latest CVS driver

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

Stefan Huelswitt wrote:
> 
> On 24 Nov 2001 Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de> wrote:
> 
> > Unfortunately I still have no idea why VDR can't display still
> > pictures with recent CVS diver versions, although Ralph insists
> > that the I-frames they use _can_ be displayed (and he proved that
> > to me by sending me such a frame, so I have to accept that from
> > his point of view the driver's 'play_iframe()' function _is_
> > working).
> 
> And what is the difference between your iframes and Ralph's?

I wish I knew ;-)

I have uploaded the files

  ftp://ftp.cadsoft.de/pub/etc/cim.mpg
  ftp://ftp.cadsoft.de/pub/etc/kls.mpg
  ftp://ftp.cadsoft.de/pub/etc/play_still.c

The first one contains Ralph's I-frame (@Ralph: I hope it's ok with you
that I have uploaded this file?!), the second one is one of VDR's I-frames,
and the third one is a small example program that takes the name of a file
and displays the I-frame in that file as a still picture (I also got this one
from Ralph). Interestingly, with the unpatched driver cim.mpg works, but kls.mpg
doesn't. If you apply my patch to dvb.c, kls.mpg works (and IIRC cim.mpg doesn't
work any more, but I'm not sure about that).

If anybody can find out what prevents kls.mpg from being displayed, I'd appreciate
any hints. BTW: kls.mpg may contain sequences with many subsequent 0x00 bytes.
These are former AC3 audio packets that have been erase by overwriting them with 0x00.
AFAIK there may be any number of 0x00 bytes in an MPEG stream, so this shouldn't
make a difference.

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
_______________________________________________________________