Write to multiple files with one Sequence Grabber?

Hi all,

 

            I am new to quicktime api and programming on the Mac, and after getting advice from the mailing list (Big thanks to Klaus!!! J for his advice), I decided to use Cocoa together with Objective C for my task. My task is to capture different views of a viewer using two iSight. I looked through the references and mailing list, seems like a lot of people would recommend looking at WhackedTV and SGDataProc as a base to building such application upon. I tried running WhackedTV with 2 iSight and recording the movie produces a single movie file with a picture in picture effect (i.e. camera 1 view is embedded at the top left corner of the movie file for camera 2).

 

I would like the program to produce two separate file instead. Is it at all possible to do it with 1 sequence grabber or must I have 2 sequence grabbers to output to two different files? Hope someone can give some advice on this.

 

Also, it seems to me the different between the WhackedTV and SGDataProc example is that WhackedTV has some sort of wrapper around the Quicktime API whereas SGDataProc seems to be directly using them. Is my understanding correct? If so, is there any advantage of doing it the way WhackedTV does it if all I want is the video? I just want something simple that works.

 

Sorry for the long post. Thanks in advance.

 

 

Thuan Seah, Tan