Re: playing mp2 files
Re: playing mp2 files
- Subject: Re: playing mp2 files
- From: David Duncan <email@hidden>
- Date: Mon, 4 Sep 2006 09:51:55 -0400
On Sep 4, 2006, at 12:21 AM, Herbie Robinson wrote:
Well, Quicktime doesn't have a "standard" set of supported formats
either. All it has are plug-ins for everything. Mpeg-2, for
example is an option, not standard.
Still, it would be nice if Core Audio could figure out how to call
the Quicktime conversion plug-ins that are present. It would make
many development tasks easier.
Yeah, CoreAudio and QuickTime are two separate pairs of boots. I
wonder why CoreAudio doesn't simply support all formats that
QuickTime
does, this seems really inconsistent (and weird) to me.
Quicktime & CoreAudio do share codecs in the form of Audio Encoder &
Decoder (aenc & adec) components. However, Quicktime also understands
Sound Manager Encoders & Decoders, which CoreAudio does not. So if a
decoder is currently packaged as an sdec, then Quicktime will be
able to play the compressed stream back while CoreAudio will not.
Additionally, CoreAudio has it's own concept of file format readers
independent of Quicktime (although I think Quicktime learned to use
CoreAudio format decoders too) so it is also possible that Quicktime
knows how to decode a format that CoreAudio does not.
--
Reality is what, when you stop believing in it, doesn't go away.
Failure is not an option. It is a privilege reserved for those who try.
David Duncan
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