RE: Video Formats

["Dean Smith" <ukha@xxxxxxx>]

Malcol

Only really been looking at this for a short while but...

There arent lots of DivX / Xvid standards as such but there are several
DivX/Xvid versions of the codec (the actual software that converts the
saved
data to picture). The newer versions in particular have several bells and
whistles either for better quality generally or to help in certain
situations. These can be enabled - usually at the expenses of extra CPU
required at encode and/or decode time. Kit that display the
"DivX" logo only
has to support a lowest common denominator set of these features enhanced
"features".

It appears that your film has been enocoded with one of the bells/whistles
your player doesn't support.

Given some time and effort its probable you could decode on your PC (where
you can quickly upgrade to support it) and then re-encode without that
feature. but you will of course lose a little quality in that process.

Deano

-----Original Message-----
From: Malcolm Surgenor [mailto:malcolm@xxxxxxx]
Sent: 23 January 2004 19:50
To: ukha_d@yahoogroups.com
Subject: [ukha_d] Video Formats


I asked the following question in another forum...

-----
I have a downloaded movie that plays fine in Windows Media Player. AVICodec
identifies it as an XVID MPEG-4 file which according to the manual your
product supports.  When I play the movie I get the error message Q Pixel
Not
Supported and can hear the sound track but can't see the picture.  What
does
this mean please?
-----

In response I got this reply, the only bit I really understand is
"definitely not supported".

-----
Hi Malcolm, it meant what it says, QPel is definitely not supported. Also,
XviD's 3 warp point GMC also cannot be supported - DivX's 1 warp point GMC
however is supported. We've tested using XviD V1.00 Beta2 with GMC, QPel
disabled. BVOB however have been tested up to 2 along with the packed
bitstream option enabled.
-----

Given copyright and encryption issues with movies, DVDs, etc I'm always a
little hesitant about asking these sorts of questions (in case I'm in
breach!) but just what does the response I got mean?  :-)  Are there lots
of
different DIVx / xVID standards?

Malcolm



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