- From: Dean Jackson <dean@w3.org>
- Date: Tue, 12 Aug 2003 23:50:09 +1000
- To: "Simon St.Laurent" <simonstl@simonstl.com>
- Cc: www-svg@w3.org
Hi Simon, On Mon 11 Aug 2003, Simon St.Laurent wrote: > > At: > http://www.w3.org/TR/SVG12/#smil2-audio > > It states: > "It is an open question what audio formats, if any, would be required > for conformance. For the image element, SVG mandates support of PNG, > JPEG and SVG formats and allows others. All three mandatory formats may > be implemented without royalty payments. Many common audio formats, such > as MP3, require payment of royalties. One option under consideration is > the Vorbis audio compression in the Ogg format. Ogg/Vorbis audio files > are believed to be implementable without royalty payments. Another > option is to say that there are no required formats, and each > implementation supports whatever format the operating system provides. > Clearly, this would lead to non-interoperable, platform-dependent > content." > > May I also suggest MIDI files? They're common, readily available, > widely supported and very very compact. Interesting suggestion. You're the first to make it (unless I've forgotten). Any idea how much a MIDI implementation would be (ie. is it small enough for SVG Tiny)? > I'm trying to figure out how best to distribute a presentation I > recently gave using SVG, minus the impediment of a 2MB MP3 file. The > corresponding MIDI file (not ideal sound, no, but it'll do) is 24K. > MIDI is also sort of the vector format of the music industry, so it > seems to me like a good fit for SVG. (Especially SVG for smaller > devices.) OK. Can someone tell me if there is a standard audio format for ringtones (or is it phone specific)? What audio does 3GPP mandate? > I'm aware that there are MIME type issues - audio/mime wasn't > registered, and audio/sp-mime seems to have disappeared from the I-D > archives. I don't know if the W3C has any relation with the MIDI > Manufacturers Association (MMA - http://www.midi.org), or what their None that I know of. > licensing is, but it looks reasonably unencumbered, though publications > cost money. > > Also, they're working on an XML format: > http://www.midi.org/dtds/midi_xml.shtml > > Might be a nice audio complement to SVG. It's a valid suggestion. However, to be honest the feeling is that it will be really difficult to mandate any audio format for SVG. THe arguments are usually: too big or not common or requires a license. Multiply this by 10 for video. I'd still like it to happen though. Dean
Received on Tuesday, 12 August 2003 09:50:22 UTC