Re: [transcode-users] converting Xvid to Divx

[rouvas <rouvas@xxxxxxxxx>]

On Tuesday 27 July 2004 19:34, Christoph Lampert wrote:
> On Tue, 27 Jul 2004, rouvas wrote:
> > [...snip...]
> >
> > > Some DivX5-stuff isn't working? Maybe simply your CD-Rs aren't working?
> > > Or is that downloaded stuff from the internet? Then you cannot really
> > > expect it to work...
> >
> > Sorry for interrupting, but...
> > I will have to disagree. I have issues with DivX5 and my black-box
> > (KiSS-DP508) also. I also have problems with XviD encoded files as well.
> > In fact the only avi's that get handled with no problems are DivX4 ones.
> > The same problematic avi's, from the same medium, when (m)played on my
> > Linux laptop display fine with no problems whatsoever.
>
> Hm, what is it exactly that do you disagree about?

You are correct, some clarification is needed.
I diasgreed with the opinion expressed that either the CD-R's are to blame or 
the downloaded stuff is problematic and stated my personal experience. I do 
not know in any detail the diferences between DivX(4/5) and XviD and this 
list has been a very valuable knowledge pool for me. Actually I just learned, 
reading this list, that there is such thing as a "container" for MPEG4 and 
that the .AVI file format is such a container. Your remarks have helped me a 
lot and I can only thank you for them.

-Stathis

>
> I wanted to express that file from the internet are unreliable, and the
> reason is that you don't know what settings were used for encoding. In
> particular, certified DivX hardware devices are only tested to work with
> the "DivX Profiles" which is a subset of MPEG-4 features (only 1 bframe,
> no Qpel, no GMC, ...) plus a restriction on peak bitrate (so called VBV).
>
> The combination of transcode+XviD doesn't support setting the DivX profile
> directly, you can get the same effect by using the xvid4.cfg file and keep
> a low enough bitrate.
>
> If your _DivX5_ files don't play, that's most likely because they were
> encoded with "Free Profile" which means no restricitions, or maybe because
> your player has a chip from Sigma Designs which is a company of thiefs
> and liars with crappy products anyway.
>
> DivX4 and XviD 0.9.2 simply don't support the extended features which some
> players have problems with, so most likely those files will work with all
> hardware players. Again, you can create the same effect with XviD and
> xvid4.cfg, by disabling many useful new features, in particular set
> max_bframes=0.
>
> Christoph

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