From: Laurent Sansonetti <laurent.sansonetti@...>
Date: 2007-07-04T19:15:45+09:00
Subject: Re: RubyOSA for QuickTime

On 7/4/07, 12 34 <rubyforum@web.knobby.ws> wrote:
> Laurent Sansonetti wrote:
> > Hi,
> >
> > On 7/3/07, 12 34 <rubyforum@web.knobby.ws> wrote:
> >> How do I access the properties of a QuickTime movie? I'm trying RubyOSA,
> >> but am open to other ideas.
> >
> > Why not trying to access the QTKit framework from Ruby via RubyCocoa?
>
> Didn't know I could, and even if I had I didn't know what do to with it.
> I thought RubyCocoa went to the other way. That is, to use Ruby in
> XCode. But obviously it's more than that.

Yes, it's a real bridge between the Objective-C and the Ruby runtimes.

> > Here is an example that prints all the metadata properties of a given
> > movie.
> >
> > $ cat a.rb
> > require 'osx/foundation'
> > OSX.require_framework 'QTKit'
> > puts OSX::QTMovie.movieWithFile_error(ARGV[0], nil).movieAttributes
> >
> > HTH,
> > Laurent
>
> Either I've already installed RubyCocoa or I can't. Neither machine will
> allow the pkg installer to work. And I tried by hand recently on my iMac
> desktop, and I got an error at some point.

Ah, maybe you are running 10.4.10. The latest release won't install on
it because of an installer bug, but we released a minor version,
called RubyCocoa-0.11.1p1, that you can get from the usual location:

http://sourceforge.net/project/showfiles.php?group_id=44114

> So unless I figure out how to get around that I'm up a creek.
>
> Also what is cat a.rb. I don't find cat in Ruby, and man cat, tell me
> it's concatenate and pring; but that doesn't make sense to me in this
> context. Much to learn.

cat is an UNIX command-line tool that has nothing to do with Ruby
here. Just look at the 3 lines of Ruby code :-)

Laurent