Re: [Facil] [Fwd: Rép. : Rapport d'incident technique sur le site Web]

Lun 19 Juin 16:59:56 EDT 2006

J'aurais du vérifier, par contre je ne suis pas certain de ce que tu dis sur
la non-disponibilité du code source. On dirait qu'il est disponible mais pas
toujours ou pas du tout sous licence GPL. Dans tous les cas ce n'est pas
clair!   D'une part je croyais que Helix était la version libre de
RealPlayer, alors qu'en réalité RealPlayer est supposé être une version de
Helix "étendue" et non-libre.

Petite parenthèse, en nous demandant d'utilser RealPlayer, Radio-Can propose
un lecteur non-libre qui permet aussi de visionner des formats libres comme
Ogg Theora (Video) et Ogg Vorbis (audio)... ! Mhh....

Sur Wikipedia on peut lire:
"*RealPlayer* is a media player <http://en.wikipedia.org/wiki/Media_player>,
created by RealNetworks <http://en.wikipedia.org/wiki/RealNetworks>, that
plays a number of multimedia formats including
MP3<http://en.wikipedia.org/wiki/MP3>,
MPEG-4 <http://en.wikipedia.org/wiki/MPEG-4>,
QuickTime<http://en.wikipedia.org/wiki/QuickTime>,
as well as multiple versions of proprietary
RealAudio<http://en.wikipedia.org/wiki/RealAudio>and
RealVideo <http://en.wikipedia.org/wiki/RealVideo>
codecs<http://en.wikipedia.org/wiki/Codec>
."

"*Helix* is an open multi-format digital media framework. The code is
released in binary and source code form (except for the extensions listed
below) under various licenses, notably the commercial RealNetworks Community
Source License<http://en.wikipedia.org/wiki/RealNetworks_Community_Source_License>and
the open source RealNetworks
Public Source License<http://en.wikipedia.org/wiki/RealNetworks_Public_Source_License>.
Additionally, the Helix DNA Client and the Helix Player are licensed under
the popular GNU General Public License
(GPL)<http://en.wikipedia.org/wiki/GNU_General_Public_License>open
source license.
RealNetworks <http://en.wikipedia.org/wiki/RealNetworks> contributed the
original source code to the Helix
Community<http://en.wikipedia.org/wiki/Helix_Community>to help the
industry standardize on a multi-format, multi-operating system,
multi-processor digital media platform."

Ouf! Overdose d'information...

"Not all of the source code is licensed under the GPL license, in particular
the codecs."

"*Helix Player* is the open source media
player<http://en.wikipedia.org/wiki/Media_player>built on top of Helix
DNA Client for
Linux <http://en.wikipedia.org/wiki/Linux> and other operating
systems<http://en.wikipedia.org/wiki/Operating_system>.
The Helix Player serves as the foundation for the
RealPlayer<http://en.wikipedia.org/wiki/RealPlayer>versions 10 and
newer for
Linux <http://en.wikipedia.org/wiki/Linux>. The
Windows<http://en.wikipedia.org/wiki/Microsoft_Windows>and
Macintosh <http://en.wikipedia.org/wiki/Apple_Macintosh> players as well as
embedded versions of the
RealPlayer<http://en.wikipedia.org/wiki/RealPlayer>for mobile phones
are also based on Helix. The Helix Player includes support
for the following media formats:

   - Audio formats: Ogg Vorbis <http://en.wikipedia.org/wiki/Ogg_Vorbis>,
   .au <http://en.wikipedia.org/wiki/Au_file_format>
   - Video formats: Ogg Theora <http://en.wikipedia.org/wiki/Ogg_Theora>,
   AVI <http://en.wikipedia.org/wiki/AVI>
   - Description formats:
SMIL<http://en.wikipedia.org/wiki/Synchronized_Multimedia_Integration_Language>,
   SDP <http://en.wikipedia.org/wiki/Session_Description_Protocol>
   - Image formats: JPEG <http://en.wikipedia.org/wiki/JPEG>,
GIF<http://en.wikipedia.org/wiki/GIF>,
   PNG <http://en.wikipedia.org/wiki/PNG>
   - Protocols: RTSP <http://en.wikipedia.org/wiki/RTSP>,
RTP<http://en.wikipedia.org/wiki/Real-time_Transport_Protocol>,
   HTTP <http://en.wikipedia.org/wiki/HTTP>,
Multicast<http://en.wikipedia.org/wiki/Multicast>,
   RDT <http://en.wikipedia.org/wiki/RDT_stream_transport>

It should be noted that use of the
RDT<http://en.wikipedia.org/wiki/RDT_stream_transport>,
the default proprietary Real data transport, and the
RealVideo<http://en.wikipedia.org/wiki/RealVideo>and
RealAudio <http://en.wikipedia.org/wiki/RealAudio> codecs requires binary
components distributed under the Helix DNA Technology Binary Research Use
License."
Dans le "about" de RealPlayer 10 pour Linux on trouve ceci pour une
vingtaine de codecs/technologies:

[...]
RealNetworks H263 Video Renderer Plugin:
Copyright(c) RealNetworks, Inc. 1995-2004. All rights reserved. Source code
for this program is available under the RealNetworks Public Source License.

La licence est ici:
http://www.opensource.org/licenses/real.php

Eh, oui, à la fin il y a des cas d'exception pour compatibilité avec la GPL
/ LGPL...

On trouve aussi:

RealNetworks RealAudio Renderer Plugin:
(c) 1995-2002 RealNetworks, Inc. All rights reserved.    RealNetworks
RealAudio 8 Audio Codec:  Copyright (c) 1995-2002 RealNetworks, Inc. All
rights reserved.    ATRAC3  Copyright (c) 2000 Sony Corporation. All rights
reserved.    aacPlus  aacPlus developed by Coding Technologies. All rights
reserved.    DolbyNet(tm) audio system manufactured under license from Dolby
Laboratories Licensing Corporation.  Copyright (c) 1996-1997, Dolby
Laboratories Licensing Corporation. All rights reserved.    ACELP(r) is
either registered trademark or trademark of VoiceAge Corporation in the
United States and/or other countries and used under license from VoiceAge
Corporation  The ACELP(r).net codec in this product is used under license
from VoiceAge Corporation  Copyright (c) 1998,1999, 2000 VoiceAge
Corporation.  All rights reserved.

RealNetworks RealMedia File Format Plugin:
(c) 1995-2002 RealNetworks, Inc. All rights reserved.
[...]
RealNetworks RealVideo Renderer Plugin:
Copyright(c) RealNetworks, Inc. 1995-2004. All rights reserved. Source code
for this program is available under the RealNetworks Public Source License.

Je peux seulement ajouter que je trouve brillant (quoique je n'approuve pas)
que Real ait ajouté le soutien de formats libres dans leur logiciels fort
probablement dans le but de  protéger  leur technologie... vous aussi
trouvez que cette phrase ne fait pas tout à fait du sens ?

On 6/19/06, Hubert Figuiere <hub at figuiere.net> wrote:
>
> > Faut pas oublier que certaines compagnies comme Real proposent des
> > logiciels libres pour lire leur formats non-libres, mais ça ne fait
> > qu'étirer le problème (si vous permettez cet abus de langage)  :)
>
> Gni?
>
> Helix Player, qui est le player open source de Real, ne contient pas le
> code source des codec Real, que ce soit audio ou video, que je sache. Ce
> qui rend le logiciel de décodage de Real non libre.
> https://helixcommunity.org/realcodecs/
>
>
> Hub
>
> _______________________________________________
> forum mailing list
> forum at facil.qc.ca
> http://facil.qc.ca/cgi-bin/mailman/listinfo/forum
>

-- 
http://www.fabianrodriguez.com
-------------- section suivante --------------
Une pièce jointe HTML a été nettoyée...
URL: https://facil.qc.ca/cgi-bin/mailman/private/forum-facil.qc.ca/attachments/20060619/7eba3561/attachment-0001.htm 