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View Full Version : USB capture boxes -- which, how?


pdx
6th April 2003, 16:52
hiya all,

i'm seriously thinking about buying an external video input unit for my computer, and preferrably one that is USB-connected (2.0 or 1.1 or 1.0, doesn't matter). which one do you recommend?

what is an absolute must for me:
- no audio sync problems -- the audio input should reside on the capture box (or have a tight sync anyhow);
- should work most reliably on win xp (or at least win98se);
- good picture quality;
- resolutions above 352x288 for 25fps PAL captures should be possible.

what would be good:
- accessible by other applications not just by the ones it's shipping with (like presenting a vfw or wdm capture device);
- full DVD resolution realtime mpeg2 capture by hardware;
- included TV-tuner, perhaps.

does anyone have experience with such cards? i found ads instant dvd (i'm holding my breath for the usb2.0 version which should ship soon), but i found mixed reviews for it and i don't know if it offers a WDM source. or is there such a thing as a firewire-connected standalone analog-to-DV converter box?

(btw, the whole point is that i won't be able to insert a PCI card into my new computer -- the available slots are already occupied by different hardware --, and i've heard that in USB-land some good products are starting to appear.)

thanks in advance,
-pdx

pdx
6th April 2003, 23:24
not trying to look schizophreniac by replying to my own :) , i just noticed i wrote 'does anyone have experience with such cards', which of course, given the context, should read as 'does anyone have experience with such boxes'. oh my! :)

pdx
8th April 2003, 09:26
done a bit of investigating. it looks like the main contenders in the championship of external capture boxes are:

ADS InstantDVD USB
cca. $139, interface: USB/1.1

pros:
- cheap
- has updated drivers
- rather good picture quality
- de-macrovision
- new updated software correct audio-sync problems
- instant hardware compression to MPEG2/MPEG1/SVCD
- new USB2.0 version will feature even better quality CBR streams and perfect audio sync (but how much will it cost?)
- video loopback to TV

cons:
- USB1.1 version only goes up to 5mbps MPEG2 stream
- tends to overheat (there are funny installation instructions for a fan...) and thus introduce noise and pixelation
- requires a fast computer for previewing and 5mbps stream

DataVideo DAC-100
cca. $179, interface: Firewire

pros:
- all-hardware audio and video capture to DV format
- de-macrovision
- perfect image and sound quality
- perfect a/v sync

cons:
- only one format, DV
- no direct input to virtualdub
- more expensive

do you guys know of anything else worthy of attention?

cweb
12th April 2003, 11:39
I saw one online (no such things in the local stores) but the specification was horrible (low resolution!).

I went for the Geforce4 instead with video in.