Perhaps you can help me - I'm trying to load two internet streams and compare them merely to see if they are identical (aka sound quality more or less irrelevant).
To compensate for timeshifts/delays I want to let one (or both) through a buffer in order to play them back with a delay or ahead (max 2000ms, I believe). For that I've made this first sketch, that kind of draws it out visually in order to eventually make these adjustments. Preliminary sketch code here

For now I'm using the same stream twice for testing purposes, but eventually they will be different.I will have to figure out some smart (FFT?) way to match them up time wise and run them both at a quality-wise lowest common denominator - sufficient enough to tell if they're identical. Perhaps that can be done by subtracting their FFT signatures?
Maybe you have som best practice tips.. I'm merely beginning here.

.. any and all help is much appreciated.

Hi there

I have a video capture device via USB for mac, that i want to use in Processing.
The device shows up in the USB Prober and I have additional info from the IORegistryExplorer if needed.
In Processing, the available devices array lists as follows:

0 DV Video
1 ECVComponent
2 Google Camera Adapter 0
3 Google Camera Adapter 1
4 IIDC FireWire Video
5 USB Video Class Video
6 VideoGlide

While 4 and 5 launch the capture.settings window as well as iSight (internal webcam), the others merely turn on the light next to the camera but with no apparent signal/ grey window.

In the capture.settings() window, however, all sources in the list are greyed out except for number 5, which lists as 'Built-in iSight', even with number 4 chosen as device in the code.

The console on the other devices read something like

quicktime.std.StdQTException[QTJava:7.7.1g],-9408=deviceCantMeetRequest,QT.vers:7718000
    at quicktime.std.StdQTException.checkError(StdQTException.java:40)
    at quicktime.std.sg.SGChannel.setDevice(SGChannel.java:330)
    at processing.video.Capture.init(Capture.java:203)
    at processing.video.Capture.<init>(Capture.java:154)
    at sketch_nov30a.setup(sketch_nov30a.java:36)
    at processing.core.PApplet.handleDraw(PApplet.java:1608)
    at processing.core.PApplet.run(PApplet.java:1530)
    at java.lang.Thread.run(Thread.java:680)
Exception in thread "Animation Thread" java.lang.RuntimeException: Error while setting up Capture
    at processing.core.PApplet.die(PApplet.java:2571)
    at processing.core.PApplet.die(PApplet.java:2580)
    at processing.video.Capture.init(Capture.java:244)
    at processing.video.Capture.<init>(Capture.java:154)
    at sketch_nov30a.setup(sketch_nov30a.java:36)
    at processing.core.PApplet.handleDraw(PApplet.java:1608)
    at processing.core.PApplet.run(PApplet.java:1530)
    at java.lang.Thread.run(Thread.java:680)

............exiting with


DVFreeThread - CFMachPortCreateWithPort hack = 0x11ed170, fPowerNotifyPort= 0x11ec3b0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f4a60, fPowerNotifyPort= 0x11ea230
DVFreeThread - CFMachPortCreateWithPort hack = 0x1183420, fPowerNotifyPort= 0x11e6b60
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f7890, fPowerNotifyPort= 0x11f7870
DVFreeThread - CFMachPortCreateWithPort hack = 0x1fb7b0, fPowerNotifyPort= 0x1f47f0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f7a90, fPowerNotifyPort= 0x11f76e0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f6cf0, fPowerNotifyPort= 0x11ea040
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f8420, fPowerNotifyPort= 0x11f7ff0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f6cf0, fPowerNotifyPort= 0x1183510
DVFreeThread - CFMachPortCreateWithPort hack = 0x148300, fPowerNotifyPort= 0x145720
DVFreeThread - CFMachPortCreateWithPort hack = 0x144ec0, fPowerNotifyPort= 0x149b40
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f1a20, fPowerNotifyPort= 0x11f5f80
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f1a20, fPowerNotifyPort= 0x11ebd80
DVFreeThread - CFMachPortCreateWithPort hack = 0x142ac0, fPowerNotifyPort= 0x1a6190
DVFreeThread - CFMachPortCreateWithPort hack = 0x158ec0, fPowerNotifyPort= 0x15d000
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f3870, fPowerNotifyPort= 0x1187360
DVFreeThread - CFMachPortCreateWithPort hack = 0x14e490, fPowerNotifyPort= 0x19b260
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f6a70, fPowerNotifyPort= 0x11f6dd0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f3550, fPowerNotifyPort= 0x118f400
DVFreeThread - CFMachPortCreateWithPort hack = 0x11f5d70, fPowerNotifyPort= 0x11f3560
DVFreeThread - CFMachPortCreateWithPort hack = 0x11e3950, fPowerNotifyPort= 0x11f43f0
DVFreeThread - CFMachPortCreateWithPort hack = 0x11ea000, fPowerNotifyPort= 0x118ef60


Now, is there maybe a driver for osx, that I'm missing?
The software that came with the capture device shows the received image nicely, - does it matter if the software is running at the same time?

Any help as to what I'm missing and best capture practices i.r.t. Processing is greatly appreciated as well as any (open source) video capturing info.

All the best,
Themapplz