Mailing Lists: Apple Mailing Lists
Image of Mac OS face in stamp
 
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: trouble opening sequence grabber

I'm not sure if I properly sent this email out the first time, so I
apologize if you all receive this for the second time.

-------------------------------------

I'm trying to write an application that simply captures video to an
output file (it will eventually do more than this, but I'm just trying
to get a feel for the QuickTime libraries, etc.). Using HackTV as an
example, I wrote my small program, however I can't seem to properly open
the sequence grabber. I first declare:

SeqGrabComponent gSeqGrabber;


Then, in a function similar to HackTV's InitializeSequenceGrabber, I
say:

gSeqGrabber = OpenDefaultComponent(SeqGrabChannelType, 0);

This always returns null, as does OpenComponent (which takes in the
result of a FindNextComponent call (which seems to be working
properly)).

I can't seem to figure out why this possibly would not be working and
unfortunately, I can't debug the rest of my code (namely the actual
polling of the video device, etc.) without getting this sequence
grabber. Has anyone seen this behavior before, and if so, are there any
suggestions for a remedy? Thanks in advance!

-Rick
_______________________________________________
quicktime-api mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/quicktime-api
Do not post admin requests to the list. They will be ignored.


Visit the Apple Store online or at retail locations.
1-800-MY-APPLE

Contact Apple | Terms of Use | Privacy Policy

Copyright © 2007 Apple Inc. All rights reserved.