Hi, I'm developing a DVD-Audio authoring application and have now reached the stage of needing to add DVD-Audio support to mkisofs.
My project is at http://dvd-audio.sourceforge.net and a working DVD-Audio authoring application is available via CVS. The above site also contains what I believe is the only detailed public information on the formats of the files in the AUDIO_TS directory. That documentation is still a work in progress, but it contains enough information to enable DVD-Audio support to be added to mkisofs. Looking at the source for mkisofs, there appears to be some initial support for DVD-Audio (i.e. correctly sorting the files in the AUDIO_TS directory), but this appears to be incomplete (it doesn't take account of all the AUDIO_TS files such as AUDIO_PP.IFO or AUDIO_SV.IFO) and also only works when the -dvd-video option is enabled. The main problem is that -dvd-video fails with an error when the VIDEO_TS directory is empty (as is the case on a pure DVD-Audio disc). The UDF requirements for DVD-Audio appear to be very similar to those for DVD-Video The various IFO files in the AUDIO_TS directory contain both relative and absolute sector pointers which need to correspond with the output of mkisofs if the DVD-Audio is to be playable on hardware players. I've described the UDF requirements in more detail, along with example "isoinfo -l" outputs at http://dvd-audio.sourceforge.net/spec/udf.shtml My proposal would be to extend the -dvd-video option to properly deal with the contents of the AUDIO_TS directory, and also deal with the case of the VIDEO_TS directory being empty. The DVD-Audio and DVD-Video specifications are very closely linked, and the specs allow a so-called "Univeral" DVD-A/V disc that contains linked AUDIO_TS and VIDEO_TS "zones". So even though the name -dvd-video isn't appropriate, I think it would be cleaner to handle both DVD-A and DVD-V via a single option, rather than adding a seperate -dvd-audio option. At the moment I am concentrating on the creation of the files in the AUDIO_TS directory, and am able to create hardware-playable DVD-Audio discs with my application and mkisofs by using the -sort option to mkisofs and manipulating the sector pointers generated by my authoring program to match the output of mksiofs. I would be very happy if someone volunteered to add DVD-Audio support to mkisofs, and I am happy to answer any questions. Otherwise, I will look into adding it myself when my authoring application is more developed. Regards, Dave. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
