- From: Philippe Le Hegaret <plh@w3.org>
- Date: Fri, 10 Aug 2007 11:50:33 -0400
- To: www-smil@w3.org
- Cc: Ivo Emanuel Gonçalves <justivo@gmail.com>, Dominique Hazael-Massieux <dom@w3.org>
Section "18.4.8 Required MIME Types", part of the SMIL 3.0 Mobile Profile, indicates: [[ * audio/basic [MIME-2] * Ogg Vorbis [VORBIS] * image/png [PNG-MIME], [PNG-REC] * image/jpeg [MIME-2], [JFIF] ]] http://www.w3.org/TR/2007/WD-SMIL3-20070713/smil-mobile-profile.html#q14 Requiring the use of PCM and Vorbis in the mobile environment might be difficult for two reasons: - it *seems* that Vorbis requires more CPU to be decoded than a format like AAC, thus rendering its use in a mobile environment more problematic. - 3GPP and 3GPP2 already adopted AAC as their audio codec (+ some AMR speech codecs). It's hard to imagine the mobile industry willing to switch to a different format now. So, while I certainly don't want to suggest that the Mobile profile must require support for AAC, I wonder if the current proposal will be welcome by the Mobile industry... Regards, Philippe PS: I'm copying Ivo Emanuel Gonçalves and Dominique Hazael-Massieux since they might have some input or comments.
Received on Friday, 10 August 2007 15:50:48 UTC