General discussion

Locked

vga to video

By krut ·
Hi,
I am attempting to video moving image sequences generated by some of the visualisation plugin?s on Winamp.
which I would like to capture with close to the same crispness and with as little colour distortion as possible.

My objective would be to capture some of these video sequences, to edit a number of clips and apply effects in Premiere,
then I would then archive the edited sequence back to a mini DV tape on my camcorder.
My ultimate intention would be to present the sequences to mystudents to get them, enthused and motivated to paint to music.
I attempted shooting the monitor?s real-time display using my camcorder. I have tried capturing direct to AVI using a software package called CAMTASIA but the resultant motion is too slow and jumpy.
I am toying with the idea of borrowing another PC or laptop and playing the visualisation sequence from the borrowed machine and either passing the visualisation signal out through a TV card or SVHS out and into the capture card onthe second PC but I don?t know if I will get sufficiently good capture resolution.
My own Ge force 2MX card is for dual monitors and it also has a TV out socket which I am reliably informed wont give me a satisfactory capture either
My reading andweb searching leads me to think that maybe I should be considering some kind of encoder or scan converter to give my captures the quality I see on my monitor.
The array of confusing possibilities includes scan converters and encoders. Given the above context and my obvious lay capability are you able to advise me of the best solution for my needs?
Alternatively are you aware of any people doing this kind of thing and whom I could approach for assistance.
I would be most appreciative of any advice you can offer on this subject.
Keith Rutherford.

This conversation is currently closed to new comments.

7 total posts (Page 1 of 1)  
| Thread display: Collapse - | Expand +

All Comments

Collapse -

vga to video

by richard_barsby In reply to vga to video

Hi I am not totally sure as to what you are trying to do but if the video sequence is on a pc you could use a digital camcorder and send the information to it by firewire (IEEE1394) to record from which you can play it on and ordinary tv/av monitor.I hope this is what you want.

Rich

Collapse -

vga to video

by krut In reply to vga to video

OK how do I get full motion vga from PC to Firewire OUT to my digital camcorder? I know how to get motion video (i.e. avi's mpeg's etc), out from my video card via firewire but not the direct vga signal via firewire?

Collapse -

vga to video

by GuruOfDos In reply to vga to video

OK....firstly, your major problem is resolution. At minimum 640x480, you can just about scan convert the VGA output to video but the results are pretty shabby! At 800x600 or higher, forget it!!

The frame rates are all wrong too! You can get a professional encoder box which effectively does the same as 'TV out' only with much better quality, but TV pictures rely on persistence of vision and the ability of the brain to compensate for missing information in the signal, and there is too much data in a VGA picture which will simply be lost in the downshift of bandwidth. A colour TV picture recorded to tape has a signal bandwidth of around 20MHz, whereas Low-res VGA is around 32MHz....for bandwidth you can substitute the term detail!

Converting to S-Video (YC) will give better bandwidth, and to component (YUV,RGsB) will give better results but then you are into the realms of studio/broadcast quality recording equipment and then you lose the quality down-converting to VHS.

To be honest with you, scan conversion, format conversion, video and AV is my field of expertise...I do this sort of thing professionally, but in this case, I really think you are on a hiding to nothing. Sorry!

Collapse -

vga to video

by krut In reply to vga to video

Poster rated this answer

Collapse -

vga to video

by richard_barsby In reply to vga to video

Hi sorry for the above answer not ever using winamp I did not know that the visualisation was a kind of sound to graphics converter.

I think that anything that will convert vga to video will cause you problems as the best consumer video tape recorders only have about 230 lines resolution compared to the lowest Windows resolution being 480, the video bandwidth of a tv is 5.5 Mhz PAL system "I" but even the worst 14" VGA monitor would have at least 25Mhz video bandwidth so even with a video standards converter the results on a tv monitor will be sub standard to your original material so although this does not answer your question I hope it gives you more to go on.

Rich

Collapse -

vga to video

by krut In reply to vga to video

Poster rated this answer

Collapse -

vga to video

by krut In reply to vga to video

This question was closed by the author

Back to Hardware Forum
7 total posts (Page 1 of 1)  

Related Discussions

Related Forums