Why not Xvid? [was codec optimization]
salsaman at xs4all.nl
Thu Mar 1 22:07:20 EST 2007
José Antonio wrote:
> On 3/1/07, *Zvi Devir* <zdevir at technion.ac.il
> <mailto:zdevir at technion.ac.il>> wrote:
> Sorry for jumping ahead, but this something I really don't understand.
> Let's assume that there are currently a few valid US patents on JPEG,
> MJPEG (There are probably more) as well as for MPEG4.2 (xvid divx
> and many more are MPEG4 part 2 implementations). My question is, so
> what? A patent is a territorial legal being -- it is valid only
> where it
> was granted. Even if JPEG is covered by hundreds of active US
> and some unenforceable EU patents, it has nothing to do with countries
> in which the OLPCs will be distributed, since those patents are
> salsaman at xs4all.nl <mailto:salsaman at xs4all.nl> wrote:
> > On Tue, February 27, 2007 19:46, José Antonio wrote:
> >> What about Xvid? It is open source and is the better codec in CPU
> >> resources
> >> use and quality...
> > Well, if you are going to use patented codecs, why not just use
> x264. It's
> > better quality than xvid.
> x264 requires more computation power for decoding compared to xvid.
> Yes, Xvid requires half computation than any other codec, in my
> (using Windows XP, ffdshow+Xvid, Sempron 2800+, mostly to record TV in
> real time).
> With any other codec I reach 100% of frame grab, 640x480, 29,97 fps,
> RGB, deinterlacing, with 60% of CPU time.
> Benjamin Franklin was right: patents sux!
> nome: "José Antonio Meira da Rocha" tratamento: "Prof. MS."
> atividade: "Pesquisa e aprendizado em mídias digitais"
> googletalk: email: MSN: joseantoniorocha at gmail.com
> <mailto:joseantoniorocha at gmail.com>
> ICQ: 658222 Skype: "meiradarocha_jor"
> veículos: [ http://meiradarocha.jor.br http://olpcitizen.blogspot.com ]
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Yes, but surely the point is *why not use theora and vorbis* ? Shouldn't
we be supporting completely free standards wherever they are available ?
Several million laptops with ogg theora and vorbis support by default,
would provide a lot of leverage.
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