Thanks Dan. I just ran the sample app in that project, and
unfortunately it uses the same method of selecting the vid source as
all the other ones (e.g. you select the SG settings, and within that
dialog you click the Sources tab). I didn't browse the code to see
if there was a deeper method in use, but it looks to me at first
glance like it has the same problem -- identically named DV devices
are not distinguished.
Of note, on our G5/10.4.11 system with 3 miglia alchemy dvr cards,
miglia provided an additional driver installer to support multiple
cards. It apparently does some magic so that the three identical PCI
cards ID themselves as "card 1", "card 2", and "card 3"...
I wonder if a similar hack could be cooked up for handling multiple
identical DV devices?
On Apr 12, 2008, at 1:16 PM, Dan Winckler wrote:
Hi Michael,
The WhackedTV sample code might be useful.
http://developer.apple.com/samplecode/WhackedTV/listing1.html
Here's the description from the readme:
WhackedTV
WhackedTV is a replacement for the venerable Carbon HackTV. It shows
how to use the Sequence Grabber API's to capture movies from external
video and audio sources, just as HackTV, but adds many important new
features, including simultaneous capture from multiple SGChannel's,
use
of the new SGAudioChannel, video preview using
ICMDecompressionSession's
and OpenGL.
Required: QuickTime 7. WhackedTV uses the SGAudioChannel instead of
the
SoundMediaType SGChannel to record audio. The SGAudioMediaType
channel
became available in QuickTime 7. The app runs a Gestalt check and
will
not run without QuickTime 7. In order to insert Audio Unit FX into
the
audio recording chain, Mac OS X 10.4 (Tiger) is required, though the
app
will run on Mac OS X 10.3.9 (where the "Audio FX" button is disabled).
To capture video, a camera with a vdig is required (such as a DV or
iSight camera). To capture audio, an audio device capable of
receiving
input using the CoreAudio interfaces is required (built-in audio on
most Macintosh computers works fine).
cheers,
dan
On Apr 10, 2008, at 8:17 PM, Michael Diehr wrote:
I'm on a tight deadline, so the plugin idea might be my only
hope. Anyone seen sample code for a QC video input patch? I'd be
happy to fix / compile and tweak in cocoa and make available to
others if it's not too hard...
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