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RE: Video ripping question?
- To: ukha_d@xxxxxxx
- Subject: RE: Video ripping question?
- From: Ian Lowe <ian@xxxxxxx>
- Date: Wed, 21 Feb 2001 05:47:16 -0800 (PST)
- Delivered-to: rich@xxxxxxx
- Delivered-to: mailing list ukha_d@xxxxxxx
- Mailing-list: list ukha_d@xxxxxxx; contact
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- Reply-to: ukha_d@xxxxxxx
--- Paul Miller <pmiller@xxxxxxx> wrote:
> Ian, not sure why you think Mpeg encoder cards blow as the mpeg2
> encoders are used to provide videowall output across high speed ATM
> networks and offer as near as dammit broadcast quality.
> At around ?2000 a card they are rather expensive :(
Sorry, yes, what I am getting at is MPEG-2 encoding at Consumer Prices
blows.
I would agree that the really high end kit can produce stunning
results, but the sort of stuff that an ATI or Matrox card can produce
is not worth the effort.
The other thing that colours my view is that MPEG-2 compression of a
stream that has already been MP2 compressed causes incredible losses
rather than just a progressive degradation. I have been told that this
is why Sky One looks so mind blowingly bad on NTL Cable, because they
re-compress the stream from Sky (which is already MPEG-2) to suit their
own bitrate requirements.
Given that the "best" source most of us will be using is Sky
Digital, I
don't rate MPEG-2.
The MP4 codec family seems to use different detail detection schemas,
and doesn't suffer too much from 2nd generation compression artifacts
(although, even then you get some right nasty artifacts every now and
then)
Ian.
=====
>+++
Ian R Lowe. Director, Wintermute Consultancy Ltd.
e-mail: ian@xxxxxxx
Onward and Upward! Towards Ascension!
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