[vdr] Re: Easy convert .vdr files to dvd(mpeg2) ?

[Stefan Lang <steven@organet.com>]

Am Dienstag, 22. April 2003 16:08 schrieben Sie:
> > Stefan Lang wrote:
> >
> > Am Dienstag, 22. April 2003 12:34 schrieben Sie:
> > > Nearly all stand alone players seem to work with 'patched' video
>
> files
>
> > > although this is non-standard, so I would give this a try first
>
> before
>
> > > transcoding and losing lot of image quality.
> >
> > The bit rate during the encoding influences the quality much more than
>
> the
>
> > resolution!!!
> > Only my 2 EURO-Cents!
>
> AFAIK, when talking about 'trancoding' a movie e.g. from 480x576 to the
> 720x576, a complete reencoding is being done (and technically
> necessary!). This means that all motion vectors etc. have to be
> recalculated again. Every MPEG reencoding causes more blocks and JPEG
> artefacts, and thatīs why I recommend patching the a video file with
> non-DVD resolution rather than re-encoding/trancoding it - and thatīs
> what I meant in my post. With patching, you keep the original image
> quality.
>
> Concerning bitrate and quality loss: Generally, your comment is true,
> but look at the latest windows DVD copy tools. They keep the motion
> vectors and change the matrix which causes the image to blur a little
> bit, but saves a lot of bits (up to 20% without really visible loss). As
> I donīt habe a big TV set, I donīt know what is worse: 480x576 and
> visible steps on thin lines (maybe even more artefacts because of a
> complete reencoding) or a slightly blurred image...
> These tools are also great if you want to put 2 VDR movies on one DVD-R

I fully agree!
But I don't want to do it with WinBLOND and/or it's "supertools"!
The main disadvantage / advantage is: There is no Mickyshit on my vdr-box! :-)

Stefan



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