The
Digistan definition of a free and open standard reads like this:
The Digital Standards Organization defines free and open standard
as follows:
- A free and open standard is immune to vendor capture at all stages
in its life-cycle. Immunity from vendor capture makes it possible to
freely use, improve upon, trust, and extend a standard over time.
- The standard is adopted and will be maintained by a not-for-profit
organisation, and its ongoing development occurs on the basis of an
open decision-making procedure available to all interested
parties.
- The standard has been published and the standard specification
document is available freely. It must be permissible to all to copy,
distribute, and use it freely.
- The patents possibly present on (parts of) the standard are made
irrevocably available on a royalty-free basis.
- There are no constraints on the re-use of the standard.
The economic outcome of a free and open standard, which can be
measured, is that it enables perfect competition between suppliers of
products based on the standard.
For a while now I have tried to figure out of Ogg Theora is a free
and open standard according to this definition. Here is a short
writeup of what I have been able to gather so far. I brought up the
topic on the Xiph advocacy mailing list
in
July 2009, for those that want to see some background information.
According to Ivo Emanuel Gonçalves and Monty Montgomery on that list
the Ogg Theora specification fulfils the Digistan definition.
Free from vendor capture?
As far as I can see, there is no single vendor that can control the
Ogg Theora specification. It can be argued that the
Xiph foundation is such vendor, but
given that it is a non-profit foundation with the expressed goal
making free and open protocols and standards available, it is not
obvious that this is a real risk. One issue with the Xiph
foundation is that its inner working (as in board member list, or who
control the foundation) are not easily available on the web. I've
been unable to find out who is in the foundation board, and have not
seen any accounting information documenting how money is handled nor
where is is spent in the foundation. It is thus not obvious for an
external observer who control The Xiph foundation, and for all I know
it is possible for a single vendor to take control over the
specification. But it seem unlikely.
Maintained by open not-for-profit organisation?
Assuming that the Xiph foundation is the organisation its web pages
claim it to be, this point is fulfilled. If Xiph foundation is
controlled by a single vendor, it isn't, but I have not found any
documentation indicating this.
According to
a report
prepared by Audun Vaaler og Børre Ludvigsen for the Norwegian
government, the Xiph foundation is a non-commercial organisation and
the development process is open, transparent and non-Discrimatory.
Until proven otherwise, I believe it make most sense to believe the
report is correct.
Specification freely available?
The specification for the Ogg
container format and both the
Vorbis and
Theora codeces are available on
the web. This are the terms in the Vorbis and Theora specification:
Anyone may freely use and distribute the Ogg and [Vorbis/Theora]
specifications, whether in private, public, or corporate
capacity. However, the Xiph.Org Foundation and the Ogg project reserve
the right to set the Ogg [Vorbis/Theora] specification and certify
specification compliance.
The Ogg container format is specified in IETF
RFC 3533, and
this is the term:
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of developing
Internet standards in which case the procedures for copyrights defined
in the Internet Standards process must be followed, or as required to
translate it into languages other than English.
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
All these terms seem to allow unlimited distribution and use, an
this term seem to be fulfilled. There might be a problem with the
missing permission to distribute modified versions of the text, and
thus reuse it in other specifications. Not quite sure if that is a
requirement for the Digistan definition.
Royalty-free?
There are no known patent claims requiring royalties for the Ogg
Theora format.
MPEG-LA
and
Steve
Jobs in Apple claim to know about some patent claims (submarine
patents) against the Theora format, but no-one else seem to believe
them. Both Opera Software and the Mozilla Foundation have looked into
this and decided to implement Ogg Theora support in their browsers
without paying any royalties. For now the claims from MPEG-LA and
Steve Jobs seem more like FUD to scare people to use the H.264 codec
than any real problem with Ogg Theora.
No constraints on re-use?
I am not aware of any constraints on re-use.
Conclusion
3 of 5 requirements seem obviously fulfilled, and the remaining 2
depend on the governing structure of the Xiph foundation. Given the
background report used by the Norwegian government, I believe it is
safe to assume the last two requirements are fulfilled too, but it
would be nice if the Xiph foundation web site made it easier to verify
this.
It would be nice to see other analysis of other specifications to
see if they are free and open standards.