<2A706BC8-BED7-4A64-8DB8-2705AFECCEAE@gmail.com>
Current votes: None.
--Apple-Mail-1-839636843 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed This is maybe off-topic to some degree. What are the DRM constraints of this format? I only ask as your organisation is embarking on an MS-DRM fueled online media project, and I am curious as to the position of this codec. thanks On 22 Mar 2007, at 12:28, Thomas Davies wrote: > Hi > > Having been pointed at this discussion by Christian, I thought I'd > let you know a bit more about where Dirac is as a royalty-free open > source codec. We're certainly very keen for Dirac to be considered > as one of the supported video formats. > > Dirac has been in development for 4 years. In compression terms > it's about twice as efficient as MPEG2, competitive with H264 and > VC-1 and substantially more efficient than Theora. The Dirac > sourceforge site contains a full specification of the system which > is very nearly complete. A subset of this, relating to professional > profiles for TV production, has already been proposed to the SMPTE > for standardisation as VC-2. Assuming that there are no roadblocks > in this process, we intend to submit the rest of the Dirac system > as VC-3 (or whatever number they're up to) towards the end of the > year. So this time next year, there is a good chance that Dirac > will be an international, royalty-free SMPTE standard. > > When we started Dirac, our intention was that the Dirac software on > the website could be developed to build a real-time system. > However, it proved difficult to make a system that could be a > reference codec for testing the specification/draft standard and > which had real-time optimisations. So in conjunction with Fluendo, > we started the Schrodinger project (http://schrodinger.sf.net) > which is a real-time, multi-platform implementation of Dirac being > developed in parallel with the Dirac software. This isn't quite > finished yet, but we will have a compliant alpha release in the > next month or two. It will be alpha because although it will do > real-time encoding and decoding in software, it won't compress all > that well. The Dirac site software is being maintained as a > reference and demonstrator system. > > Our aim then is to do a beta release of Schrodinger by the autumn > using all the encoder optimisations in Dirac, so by the end of the > year we should be "there" in terms of having a really good, > efficient real-time encoder and decoder. Third parties can start > designing implementations when the spec is finalised at version 1.0 > in only a couple of weeks from now. > > We have been developing Dirac hardware as well. Hardware for the > professional applications will be on sale in a very few weeks, and > we're developing a prototype hardware HDTV encoder too. > > > Thomas > > > http://www.bbc.co.uk > This e-mail (and any attachments) is confidential and may contain > personal views which are not the views of the BBC unless > specifically stated. > If you have received it in error, please delete it from your system. > Do not use, copy or disclose the information in any way nor act in > reliance on it and notify the sender immediately. > Please note that the BBC monitors e-mails sent or received. > Further communication will signify your consent to this. --Apple-Mail-1-839636843 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=US-ASCII <HTML><BODY style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; = -khtml-line-break: after-white-space; ">This is maybe off-topic to some = degree.<DIV><BR class=3D"khtml-block-placeholder"></DIV><DIV>What are = the DRM constraints of this format?</DIV><DIV>I only ask as your = organisation is embarking on an MS-DRM fueled online media project, and = I am curious as to the position of this codec.</DIV><DIV><BR = class=3D"khtml-block-placeholder"></DIV><DIV>thanks</DIV><DIV><BR><DIV><DI= V>On 22 Mar 2007, at 12:28, Thomas Davies wrote:</DIV><BR = class=3D"Apple-interchange-newline"><BLOCKQUOTE type=3D"cite"> <P><FONT = size=3D"2" face=3D"Arial">Hi</FONT> </P><P><FONT size=3D"2" = face=3D"Arial">Having been pointed at this discussion by Christian, I = thought I'd let you know a bit more about where Dirac is as a = royalty-free open source codec. We're certainly very keen for Dirac to = be considered as one of the supported video formats.</FONT></P><P><FONT = size=3D"2" face=3D"Arial">Dirac has been in development for 4 years. In = compression terms it's about twice as efficient as MPEG2, competitive = with H264 and VC-1 and substantially more efficient than Theora. The = Dirac sourceforge site contains a full specification of the system which = is very nearly complete. A subset of this, relating to professional = profiles for TV production, has already been proposed to the SMPTE for = standardisation as VC-2. Assuming that there are no roadblocks in this = process, we intend to submit the rest of the Dirac system as VC-3 (or = whatever number they're up to) towards the end of the year. So this time = next year, there is a good chance that Dirac will be an international, = royalty-free SMPTE standard.</FONT></P><P><FONT size=3D"2" = face=3D"Arial">When we started Dirac, our intention was that the Dirac = software on the website could be developed to build a real-time system. = However, it proved difficult to make a system that could be a reference = codec for testing the specification/draft standard and which had = real-time optimisations. So in conjunction with Fluendo, we started the = Schrodinger project (</FONT><A href=3D"http://schrodinger.sf.net"><U><FONT= color=3D"#0000FF" size=3D"2" = face=3D"Arial">http://schrodinger.sf.net</FONT></U></A><FONT size=3D"2" = face=3D"Arial">) which is a real-time, multi-platform implementation of = Dirac being developed in parallel with the Dirac software. This isn't = quite finished yet, but we will have a compliant alpha release in the = next month or two. It will be alpha because although it will do = real-time encoding and decoding in software, it won't compress all that = well. The Dirac site software is being maintained as a reference and = demonstrator system. </FONT></P><P><FONT size=3D"2" face=3D"Arial">Our = aim then is to do a beta release of Schrodinger by the autumn using all = the encoder optimisations in Dirac, so by the end of the year we should = be "there" in terms of having a really good, efficient real-time encoder = and decoder. Third parties can start designing implementations when the = spec is finalised at version 1.0 in only a couple of weeks from now. = </FONT></P><P><FONT size=3D"2" face=3D"Arial">We have been developing = Dirac hardware as well. Hardware for the professional applications will = be on sale in a very few weeks, and we're developing a prototype = hardware HDTV encoder too.</FONT></P> <BR><P><FONT size=3D"2" = face=3D"Arial">Thomas </FONT> </P> <BR><FONT face=3D"Times New Roman" = size=3D"3"><A = href=3D"http://www.bbc.co.uk">http://www.bbc.co.uk</A><BR>This e-mail = (and any attachments) is confidential and may contain personal views = which are not the views of the BBC unless specifically stated.<BR>If you = have received it in error, please delete it from your system.<BR>Do not = use, copy or disclose the information in any way nor act in reliance on = it and notify the sender immediately.<BR>Please note that the BBC = monitors e-mails sent or received.<BR>Further communication will signify = your consent to this.</FONT> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>= --Apple-Mail-1-839636843--