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Subject: MPC/musepack to go opensource - Maintainer/Developer of MPC XMMS plugin wanted - msg#00003List: audio.mpc.generalHi, i am Christian and one of the project admins of the audio compression format MPC ( musepack / MPEG+ ) and also of the matroska container format. I am not a developer and mainly into organisation/PR. This is my first email to the XMMS developer ML and i am turning to you people to ask for support. Please allow me to use this email to announce that MPC is now turning into an opensource audio compression format. While the decoder always was open, the encoder was not in the past. Development on MPC was slow recently, but there is hope it will put up speed again. MPC is also known as 'musepack' and also as 'MPEG+'. It is based on the MP2 audio compression standard and also using subband coding. However, due to its highly developed psy model it is currently perceived as the best mid/high bitrate ( 128 - 256 kbps ) lossy audio compression format by many audio experts, especially by those centered around the Hydrogenaudio.org community. MPC will be hosted on http://corecodec.org , an opensource community like sourceforge, but concentrating on multimedia projects. The project page is on http://corecodec.org/projects/mpc and most of the available sourcecode was uploaded to CVS now already. The license form will be L-GPL. Reason i am turning to this list is that we are asking the developers reading here if anybody might be interested to join the MPC development team, mainly to maintain and develop the existing XMMS plugin for MPC, but maybe also to care about MPC implementation into other important Linux media applications like FFMPEG, mplayer, Gstreamer, Xine, etc. ( optional ) . The developer looking into this should have indeep knowledge about Linux itself, as well as a basic idea about the most important players and encoders for it, and also basics about audio compression. MPC is currently moving from the well accepted SV7 bitstream format to the long awaited SV8 version, with the following new goals - allow using of MPC in video containers, such as matroska - support more than 2 channels, to allow surround encodings - further enhancement of encoder performance, especially in the low/mid bitrates - introduce a new encoder structure based on interacting modules, to allow improvement of it by different developers, as well as reusing any of those modules in other opensource encoder projects - adding a DRC ( dynamic range compression ) element to the blocks It is well possible that MPC will leave the basic principle of subband coding in future, and introduce a form of transform encoding similar to other audio compression formats, but likely not for SV8. I hope i could wake your interest in participating in MPC development and am looking forward to receive emails from you if you want to know more about it. Best regards Christian MPC and matroska project admin Thread at a glance:
Previous Message by Date: click to view message previewCVS on corecodec.org/projects/mpc is now activeHi, due to recent events ( short life signs from Frank, which shouldnt make us euphoristic yet ) i decided to invest some time to upload all source code i have access to to the CVS on http://corecodec.org/projects/mpc . For some strange reasons it seems anonymous access is broken right now, but i hope the Corecodec tea, can fix it soon. The CVS knows two modules now, one is called 'encoder' and the other is 'decoder' . After talking to the other developers i will probably add another module, 'XMMS' for the XMMS plugin, and maybe its a good idea to upload the foobar200 plugin sources also ( i have to talk to DEATH about this before ). BTW, Dibrom offered to maintain the MacOSX compilable sources and he just registered his developer account on corecodec.org, but even the member authentification seems to be broken ;) ..... some work to do for the Corecodec team it seems. Anyhow, its time we get this project standing on solid ground, and using CVS like many other projects do could be a good start IMO. Regards Christian http://mpc.corecodec.org Next Message by Date: click to view message previewXMMS plugin maintainer - no responseHi folks, its time we start using this mailing list more often, as using webboards to discuss things like this can be cumbersome IMO. Frank is currently looking at MPC again, and he was requesting help from us on a couple of issues : *1. XMMS Plugin* As long as foobar2000 has not been ported to Linux, its still his preferred choice for audio playback on Linux, and he is obviously planning to do development and audio testing with it. Therefore its necessary that someone who is versed enough with MPC, XMMS and Linux cares about the plugin. If Frank has to do it himself, his precious time will be spent on maintaining the plugin, instead of improving the codec. This cant be in our interest, so i am herewith trying to encourage you to talk to any developer you know, who fits in the above mentioned skills range. *2. Samples Page* Frank had the idea that a samples download page has to be created, so that people are all using the same audio samples when conducting listening tests. A great idea IMO, and i am checking with one of our team members who has a nice server with 15 GB reserved for us, connected with a T3 and max . 80 GB/month. I hope he will agree to use his server for this purpose, although i dont expect him to allow that the link gets spread publically. Its maybe a good idea to only have torrents seeded publically ( i can do this if you want, Azureus can easily handle 100 seeds at the same time and we also have a tracker we can use for that ) and to reserve the download page to trusted members only, from who we know they actively participate in listening tests. *3. SV8 alpha encoder listening test* Frank stated more than once that he was disappointed that nobody took the time to actively test his sample SV8 encoder that time when he published it. I will ask Frank to make a new release of it soon, and we should ask Case to make a fb2k encoder plugin from it so we can start testing. You all did a great contribution to MPC with the donation for Frank's new PC, now lets start to become *active MPC team members* instead of just lemmings waiting for the next rain. CiTay should be an example for all of you, he did an incredible job with the organisation of the donation process, and can be called 'saviour of MPC' now because of this ;) ..... Christian P.S. It would actually be nice if anybody actually replied to this email, and to the mailing list ...... :sigh: .... http://mpc.corecodec.org Previous Message by Thread: click to view message previewCVS on corecodec.org/projects/mpc is now activeHi, due to recent events ( short life signs from Frank, which shouldnt make us euphoristic yet ) i decided to invest some time to upload all source code i have access to to the CVS on http://corecodec.org/projects/mpc . For some strange reasons it seems anonymous access is broken right now, but i hope the Corecodec tea, can fix it soon. The CVS knows two modules now, one is called 'encoder' and the other is 'decoder' . After talking to the other developers i will probably add another module, 'XMMS' for the XMMS plugin, and maybe its a good idea to upload the foobar200 plugin sources also ( i have to talk to DEATH about this before ). BTW, Dibrom offered to maintain the MacOSX compilable sources and he just registered his developer account on corecodec.org, but even the member authentification seems to be broken ;) ..... some work to do for the Corecodec team it seems. Anyhow, its time we get this project standing on solid ground, and using CVS like many other projects do could be a good start IMO. Regards Christian http://mpc.corecodec.org Next Message by Thread: click to view message previewXMMS plugin maintainer - no responseHi folks, its time we start using this mailing list more often, as using webboards to discuss things like this can be cumbersome IMO. Frank is currently looking at MPC again, and he was requesting help from us on a couple of issues : *1. XMMS Plugin* As long as foobar2000 has not been ported to Linux, its still his preferred choice for audio playback on Linux, and he is obviously planning to do development and audio testing with it. Therefore its necessary that someone who is versed enough with MPC, XMMS and Linux cares about the plugin. If Frank has to do it himself, his precious time will be spent on maintaining the plugin, instead of improving the codec. This cant be in our interest, so i am herewith trying to encourage you to talk to any developer you know, who fits in the above mentioned skills range. *2. Samples Page* Frank had the idea that a samples download page has to be created, so that people are all using the same audio samples when conducting listening tests. A great idea IMO, and i am checking with one of our team members who has a nice server with 15 GB reserved for us, connected with a T3 and max . 80 GB/month. I hope he will agree to use his server for this purpose, although i dont expect him to allow that the link gets spread publically. Its maybe a good idea to only have torrents seeded publically ( i can do this if you want, Azureus can easily handle 100 seeds at the same time and we also have a tracker we can use for that ) and to reserve the download page to trusted members only, from who we know they actively participate in listening tests. *3. SV8 alpha encoder listening test* Frank stated more than once that he was disappointed that nobody took the time to actively test his sample SV8 encoder that time when he published it. I will ask Frank to make a new release of it soon, and we should ask Case to make a fb2k encoder plugin from it so we can start testing. You all did a great contribution to MPC with the donation for Frank's new PC, now lets start to become *active MPC team members* instead of just lemmings waiting for the next rain. CiTay should be an example for all of you, he did an incredible job with the organisation of the donation process, and can be called 'saviour of MPC' now because of this ;) ..... Christian P.S. It would actually be nice if anybody actually replied to this email, and to the mailing list ...... :sigh: .... http://mpc.corecodec.org Loading Comments...
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