get audio track layout of QuickTime movie

Posted by rainerstandke on Stack Overflow See other posts from Stack Overflow or by rainerstandke
Published on 2010-06-03T04:44:42Z Indexed on 2010/06/03 4:54 UTC
Read the original article Hit count: 150

Filed under:

objective-c

|

quicktime

I need to determine how many channels a sound track has in a QuickTime movie. I can get to the track, then I am stuck. I wonder if the answer would be in a QTFormatDescription, but I can't figure out how to get one for the track. I am using Objective-C on Mac OS 10.6.

© Stack Overflow or respective owner

Related posts about objective-c

Blocking access to websites with objective-C / root privileges in objective-C

as seen on Stack Overflow - Search for 'Stack Overflow'
I am writing a program in Objective-C (XCode 3.2, on Snow Leopard) that is capable of either selectively blocking certain sites for a duration or only allow certain sites (and thus block all others) for a duration. The reasoning behind this program is rather simple. I tend to get distracted when I… >>> More
Objective-C with some Objective-C++, calling a normal c++ method "referenced from" problem

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I made an Objective-C project for the iPhone. I had only one cpp class, the soundEngine taken from some Apple demo. Now I'm trying to merge OpenFeint which is coded in Objective-C++. As soon as I drop in the code without even referring to it from my code, when I hit Build, my Objective-C code… >>> More
Add an objective @property attribute in objective-c

as seen on Stack Overflow - Search for 'Stack Overflow'
Does anyone know of a way to add additional attribute types to the @property keyword without modifying the compiler? Or can anyone think of another way to genericize getter/setter creation? Basically, I have a lot of cases in a recent project where it's handy for objects to lazily instantiate their… >>> More
ObjectiveC builtin template system ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I am developing an iPhone application and I use HTML to display formatted text. I often display the same webpage, but with a different content. I would like to use a template HTML file, and then fill it with my diffent values. I wonder if ObjectiveC has a template system similar to ERB in Ruby. That… >>> More
ObjectiveC Syntax for Specifying Protocol Name in Method Argument

as seen on Stack Overflow - Search for 'Stack Overflow'
What's the ObjectiveC syntax for specifying a protocol as an argument in a method? Say I have 2 protocols, MyProtocol and MyProtocolCB: @protocol MyProtocolCB <NSObject> - (void) func; @end @protocol MyProtocol <NSObject> - (void) register:(MyProtocolCB*) cb; @end I'm receiving this… >>> More

Related posts about quicktime

Why is my Quicktime plugin transport bar black?

as seen on Super User - Search for 'Super User'
For some reason when watching quicktime moves in firefox the transport bar is completely black. I can still use it to fast forward and rewind but I can't actually see any of the buttons. Any clue how to fix this? I've updated to the latest version of quicktime but it didn't help. I've also verified… >>> More
How to save QuickTime movie trailer files?

as seen on Super User - Search for 'Super User'
Is it true that a few months ago, QuickTime allows users to save the movie trailers without using the Pro version? Right now, it seems like we need to pay $29.99 to save the movie trailer clip onto the hard drive... Several months ago, I also tried using Ubuntu and there was a plugin to view the… >>> More
How to show quicktime videos in succession

as seen on Stack Overflow - Search for 'Stack Overflow'
How do I have two or more quicktime videos to play one after the other, with no action taken by the user? I've seen an example of the technique here: http://untitled.wiredrive.com//l/p/?presentation=7c79bedbb8b02d2b1da45b033cc20345 I can't seem to boil down their code to the good stuff. Thanks! >>> More
Applescript save command for QuickTime Player

as seen on Super User - Search for 'Super User'
I've installed the Perian addon for Quicktime so it can open .flv files, and then I can save them as .m4v or .mov. I'm trying to make an Applescript to convert from .flv to .m4v automatically by using this tutorial and butchering their example applescript file, which normally converts ChemDraw files… >>> More
Windows 7 File Associations .mov

as seen on Super User - Search for 'Super User'
I created a new windows 7 SP1 base image. Everything is all fine and dandy with that. So i am now installing standard applications I would like Quicktime to manage .mov files. The only problem is WMP (Windows Media Player) won't give up the association to .mov files. It's driving me crazy..… >>> More