Phil Spitler

Hi, I want to create a simple setup that waits for a key and then records video and audio from the webcam.

Note, this is my first go a using Max :-)

I have the camera working and it starts when the user presses "a" on the keyboard.

However, the jit.vcr doesn't seem to record.

I was using jit.qt.record and that also didn't work.

Oddly enough at one point my patcher did prompt me for a filename and did record.

I have attached a screenshot of my patcher, I'm sure it's something dumb.

I'm excited to start using Max in my projects.

I was using jit.qt.record and that also didn't work. 

jit-vcr-recording-video

Go to edit. Copy compressed. Paste that in the forum.

Pictures aren't so helpful.
Select your whole patch. Ctrl + a.
Go to edit. Copy compressed. Paste that in the forum.


eh, the picture is enough to tell what's going on. you're gonna want to turn on your audio input/output. connect a [ezadc~] to the first two inlets of [jit.vcr] (remove the [jit.pwindow] from going into there). You can have any noises going into the first two inlets, just make sure the audio is on (check the vcr helpfile).

Also you should have your [jit.grab] going into the right side, but i guess the pwindow also spits out a matrix, even though the patch cord doesn't indicate that.

you connected the selection of the key to the metro driving the grab (and the recorder). That is not necessary. Also it doesn't end the recording: you use the message 'stop' for that.

With [sel 1] you can make the key press binary: on or off (0 or 1) and with that start and stop.

I didn't test audio. And connected to matrix out of the grab directly to the VCR.

you connected the selection of the key to the metro driving the grab (and the recorder). That is not necessary. Also it doesn't end the recording: you use the message 'stop' for that.
With [sel 1] you can make the key press binary: on or off (0 or 1) and with that start and stop.

I didn't test audio. And connected to matrix out of the grab directly to the VCR. 

@Mr Maarten, I tried your patch and it doesn't seem to save a QT file anywhere.

Have I specified the filename in the correct place?

@Mr Maarten,  I tried your patch and it doesn't seem to save a QT file anywhere.

if you first save the patch, it saves it in the patch location (otherwise use search in the OS to find the file). You can also specify a path

here is an example patch that shows the principles:

Thanks that helps and will certainly help down the road when I want to create random file names.

Having said that, my patch still isn't recoding video.

It seems odd that I'm putting the filename into the "audio in"

As you can tell, I'm a total noob here and your help is great.

Looking at the console I see a ton of these messages.

jit.vcr: DSP must be enabled before writing

To be honest, I've never used the jit.vcr. I always use jit.record. I am not so well versed in the audio aspects of max/msp/jitter.

So I can't help you too much with audio stuff. But I think that "DSP must be enabled before writing" means that you have to activate the audio DAC...

To be honest, I've never used the jit.vcr. I always use jit.record. I am not so well versed in the audio aspects of max/msp/jitter. 

I enabled audio and it worked great. Thanks.

One issue is that audio isn't coming through.

I wonder if jit.qt.grab isn't seeing my audio device.

One issue is that audio  isn't coming through.

I wonder if jit.qt.grab isn't seeing my audio device.


The issue now is that the audio is out of sync with the video significantly.

jit.vcr - Recording video