Re: About Technical Q&A QA1518 - Using UTIs to Identify Image Files - what about Video?
Re: About Technical Q&A QA1518 - Using UTIs to Identify Image Files - what about Video?
- Subject: Re: About Technical Q&A QA1518 - Using UTIs to Identify Image Files - what about Video?
- From: "Finlay Dobbie" <email@hidden>
- Date: Fri, 1 Jun 2007 23:26:28 +0100
On 01/06/07, Steve Sheets <email@hidden> wrote:
Apple's recently released Technical Q&A 1518 uses UTIs to identify
Image files. Given a path to a file, the routine show returns true if
the file is an Image file. It actually uses the
CGImageSourceCopyTypeIdentifiers: call to find a list of UTIs for the
images files Quartz supports.
What about videos?
I need to be able to do exactly the same thing for the various file
formats that Quicktime supports. (ex .mov & .mpg file types). I can
not find a similar call in Quicktime to provide the UTIs for
Quicktime compatible files.
Does anyone have better suggestion? I do not want to have to try to
open the file, to determine if it is a video.
I don't believe there is a similar function using UTIs in QuickTime
yet. However, there has been functionality for determining if
QuickTime can deal with a file for a long time through a specific API,
see <http://developer.apple.com/documentation/QuickTime/WhatsNewQT5/QT5NewChapt1/chapter_1_section_31.html>
-- Finlay
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