[st93]

I am recording software demonstrations and need to record directly from a video port on a pc. I am told a video signal from a computer might be able to be recorded by hdtv vcrs, is that correct & can it record most pc settings (800x600, 1024x768, 1280x1024)?


Thanks for an help,

Steve

 

[balazer]

Have you tried the screen recorder feature in Windows Media Encoder?


The only way to capture baseband video from a PC at greater than SD resolutions would be with a WVHS analog HD recorder, and that would only support 1080i.

 

[st93]

Quote:

Originally posted by balazer Have you tried the screen recorder feature in Windows Media Encoder? The only way to capture baseband video from a PC at greater than SD resolutions would be with a WVHS analog HD recorder, and that would only support 1080i.

I can't use the WinMediaEncoder because I am recording for more than just windows os. But you brought up an important point that I missed, video out on a pc is analog.


Since you brought up the analog angle, I been looking into rgb. Do you see any problem with using a Scan Converter to go from RGB->IEEE1394? I have a mac which will read that in in hidef... so I think that should work.


I haven't seen one that has both RGB In & IEEE1394 out, but I am sure I can find one if I keep looking.... but technically there is nothing wrong with that approach, meaning I won't lose any resolution/detail, is that correct?


Thanks for your help,

Steve

 

[HDHTPC]

The typical way to do this is with a scan converter, and down convert to NTSC resolution. You can then MPEG2 encode and burn to a DVD or just play from a S-VHS tape.

 

[st93]

Quote:

Originally posted by HDHTPC The typical way to do this is with a scan converter, and down convert to NTSC resolution. You can then MPEG2 encode and burn to a DVD or just play from a S-VHS tape.

That seems to be the problem I am running into ... every converter seems to do what you are suggesting... make me down-convert, like reduced resolution is good.


I wanted to keep it at the high resolution & import it into something like Apple Final Cut Pro, which can handle DV input of 1080i. That way I can edit & zoom what I want, not what some converter has already done for me.


Has anyone seen on which will go from analog rgb to dv/ieee1394 ? (without down-converting)


Thanks.

 

[HDTV4ever]

Untested workaround (that probably sucks). use the twinview feature of most graphics cards /nvidia/ati) and use an extra widescreen of say 1600x600, or 2 dual output for a quad screen output of 4x800x600=1600*1200. You can record each screen at MPEG2 DVD resolution and fuse the 4 screens together later on if you are handy with the video editing apps...


Also, try this: http://www.fraps.com

 

[balazer]

If you want a box with analog HD video in and 1394 out, it must have a real-time HD MPEG-2 encoder in it. I don't think such a thing exists in stand-alone form (i.e., not attached to an HD camcorder).


There are real-time HD over SDI capture solutions for the Mac. You'd need an RGB to SDI transcoder. Even then, I'm not sure if the SDI HD capture device would support resolutions other than 720p and 1080i. All of this stuff is pretty expensive.


What are you trying to capture?

 

[HDHTPC]

BTW: "DV" is only NTSC resolution - so even if you were able to get DV IEEE1394 output, it would only be about ~700x480 resolution.


The JVC GR-HD1 HD-camcorder can record 720p digitally (1280x720p), but

I don't think it can input anything other than what it sees from its' own

camera. I suppose you could point a GR-HD1 at a CRT or LCD screen and

film the screen. Actually, if you set up the shutter right, and get pro

equipment with genlock, shooting video of the screen can work well.

 

[st93]

Quote:

Originally posted by balazer There are real-time HD over SDI capture solutions for the Mac. You'd need an RGB to SDI transcoder. Even then, I'm not sure if the SDI HD capture device would support resolutions other than 720p and 1080i. All of this stuff is pretty expensive. What are you trying to capture?

Looks like there is no way to get SDI-HD into a mac (just SDI).


I am trying to record running video from PC/Linux/Sun machines. I want full resolution so I can edit, zoom in & crop during edit time & still get good resolution; downscanning at record time will ruin a lot of text on the screen and not allow me to have good clean images of just part of the screen.


So far, it looks like my best option is

Analog VGA -> DVI

DVI -> IEEE 1394, so it can be recorded by some device.


Except I can't find a DVI -> IEEE 1394 converter, but I am sure there is one out there.


Anyone see a flaw in that logic? Thanks.

 

[balazer]

I'm almost sure there isn't a DVI -> 1394 converter out there.


There are HD SDI input products for the Mac. Look at the Pinnacle CineWave.

 

[George Thompson]

I don't know what your budget is, but entry level Avid DNS-Adrenaline will work for you.
http://www.avid.com/products/dna/adrenaline/index.asp

We use them with HP pc's in news, but they work with Mac's too.

Just completed the Unity Networking Administration and Maintenance course. Now I get to play on 3 Nitris DS's in training class. OH Yeahhh

GT

 

[dt_dc]

Quote:

Originally posted by st93 Anyone see a flaw in that logic?

Just price ...


There's products that will do what you want ... but it's gonna cost ...


Doremi Labs:
http://www.doremilabs.com/


JVC Pro:
http://pro.jvc.com/prof/Attributes/f...l_id=MDL101391


Lots of others that will do what you want if you have the $$$.


But ... I gotta think a software solution is going to be much more economical ...


For the Mac:
http://www.ambrosiasw.com/utilities/snapzprox/
http://www.bensoftware.com/btvpro.html


For PC:
http://www.techsmith.com/
http://www.supercapture.com/en/scree...der/index.html


Heck ... even Linux:
http://wincam.net/main.html


I'm sure there's more ...


Most of these products allow you to just capture a specific region of the screen (getting to your zoom / edit / crop issue) ... most offer some sort of lossless capture format ... or a near lossless format where quality is only dependent on your PC harware ...