[vlc] Re: what encoding has bitrate around 150 k and support by opie-vlc?

[Andrew leung]

Dear Christian,

Thank you very much for your help
I will find out more from the links provided, really thx! :)


andrew
----- Original Message -----
From: ChristianHJW <christian at matroska.org>
Date: Sat, 29 Mar 2003 22:48:32 +0100
To: vlc at videolan.org
Subject: [vlc] Re: what encoding has bitrate around 150 k and support by opie-vlc?

> Andrew leung wrote:
> > Dear ALL,
> > I would like to ask if anyone of you try and sucess an encoding scheme which allow low bit rate around 150 kbps AND supported by opie-vlc and vlc " streaming " ?
> > Jean - Paul, as your test result (and what I repeated in my machine) 
> > H.263 is OK but with no audio, right?
> > Thank you for your help,
> > Andrew
> 
> I guess these are your favourites :
> 
> 1. h.264 . it has the potential to become master of desaster IMHO, 
> unfortunately you wont be able to use it right now, as the existing 
> reference en/decoder will not allow playback of video material in real 
> time and any encoding will take weeks, also its not tuned at all but 
> just to prove the concept. You might have a look at 
> http://sf.net/projects/hdot264 and see what they come up with in future, 
> they just started to make some code that does replace the reference code 
> with much higher speed ( in C++ ). Just for completeness, it will be 
> part of the official MPEG4 standards soon AFAIK ...
> 
> Please note that the h.264 specs include a couple of nice features for 
> low bitrate streaming, e.g. the packing of frame information into NALUs 
> ( data packets of varying priority ), so if some low priority packets 
> get lost you can still see the picture, but with reduced quality ( 
> matroska can support NALU already, at least theoretically ;-) .. )
> 
> 2. WMV9 : There is a VCM ( VfW ) codec for M$ WMV9 since yesterday ( 
> link : 
> http://www.microsoft.com/windows/windowsmedia/9series/codecs/vcm.aspx  ) 
> so you can pack it into AVI container and are not doomed to use it from 
> Windows Mediaencoder together with WMA in ASF. I was making some test 
> encodes in Virtualdub and was quite impressed by its quality ( 300 kbps 
> on a 640 x 288 video ) i have to admit. Expect it to work in matroska 
> also soon ...
> 
> 3. Realmedia ( http://helixcommunity.org ) ; never tested it but it was 
> reported to look quite nice at lower bitrates, but looses a lot of 
> detail. Make your mind up for yourself and tell us what you found ...
> 
> Regards
> 
> Christian
> http://www.matroska.org
> 
> 
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