Aja and CS2 Video Preview

[Jeremy Garchow]

I think CS2 only previews through firewire (regular dv) not through the io or any other capture card for that matter. Until someone writes drivers, you have to use a firewire deck.

Jeremy

[Jonathan Lê]

That’s too bad. I was hoping that because the IO uses FireWire it might be possible. Thanks for the reply.
Jon

[Jeremy Garchow]

While to io uses the firewire bus to transfer data between itself and the computer, it does not use a dv signal. The video going over the io is uncompressed. Photoshop is looking for a plain ole dv signal. Hopefully someone will figure out how to tap into this resource.

Jeremy

[Michael Lazar]

OK I have to ask (understanding that the Io *doesn’t* do what I’m about to describe):

Won’t the image be subsampled into 4:1:1 for preview via DV? If so, why would someone want to preview that way – unless DV was going to be the final output media?

Or am I missing something entirely here?

Michael

[Jeremy Garchow]

[Michael Lazar] “If so, why would someone want to preview that way – unless DV was going to be the final output media?”

I think the DV preview is just that, a preview. You can check for line twitter and a general look & feel, but not for final judgement.

[Vincent Tsu]

I use Echo Fire to route the Photoshop canvas out through the IO. The only bummer is it doesn’t live update; you have to select File\Export\Echo Fire every time you want to see changes to your canvas.

https://www.synthetic-ap.com/products/echofire/macindex.html

[Jonathan Lê]

It isn’t hyper critical to my work-flow but it would be a nice bonus. I enjoy the monitor out capability when working in After Effects but it would be nice to check colours and jitters right from Photoshop. Is this a hardware limitation or could someone at AJA write a software update. Just curious as I don’t really understand all the mechanics of the IO.

Jon

[Tom Matthies]

I found a kind of a way around the issue. I go out from PhotoShop CS2 via Firewire to my camcorder. I have the S-video out from the camcorder going to my Io. Usually there will be a conflict between the two and the Firewire bus, but I found that if you open the Io control panel, set it to S-video input to shot what’s coming out of the camera and then quit out of the Io control panel application, CS2 can then send the Firewire preview to the camcorder. With the Io still powered up (and the control panel closed down) it will still pass a signal in whatever configuration it was in when the Control Panel app. was closed down. In other words it will allow CS2 to send the video preview to the camera and then the camera to send it thu the Io to my production monitor. It’s a bit confusing, but it works great. The preview from CS2 isn’t really high quality, but I gives you an idea what a graphic is going to look like when it goes to video.
Tom

[Jonathan Lê]

That does sound a little complicated, I also don’t have a camcorder that I could easily use. Could you not just go from CS2 to your camcorder to the S-Video of your production monitor? It’s interesting that they couldn’t just use a preview similar to the one in After Effects. I hear CS3 is just around the corner so who knows what imporvments will be made. I really like what CS2 has done in regards to working with video so this preview issue is really a minor one.

Thanks
Jon

[Tom Matthies]

Yes, you could just use the camcorder as a DV bridge and output that to a monitor. I just happen to have an Aja Io in my setyp and it feeds my production monitor. I just feed the output of my camcorder into the Io simply to avoid having to get back behind my equipment rack and move the cables around. You could just feed your camcorder, or any other device-like a Canopus ADVC100, into your monitor and it should work fine. I assumed that you had an Io in your system somewhere since this was posted in the Io forum.
Tom