From: Mick McQuaid (mcquaid_at_u.arizona.edu)
Date: Mon Dec 02 2002 - 15:10:27 EST
I did encounter *some* dropped frames, even at
160x120 resolution, using the IBM Enhanced Video
Adapter on the 770X running Win98SE, although far
fewer than at 320x240 ~30fps, which was the
minimum acceptable for my test. I can not
remember the name of the capture software that
came with the IBM adapter, but I did find a
difference in dropped frames between it and
Premiere. (Premiere seemed somewhat better,
although I didn't test enough to determine whether
it was just fortuitous default settings.)
... regarding a message from Andrew Beals on Dec 02:
>
> mcquaid_at_u.arizona.edu said:
> > The adapter also purports to allow you to use another plug on the same
> > adapter to input video to your thinkpad. Unfortunately, it drops as
> > many frames as it captures, at least with the original slowpoke hard
> > drive.
>
> Well, yes and no.
>
> From my testing, the 8.<sumpin> gig drive that came with the 770ED is able to
> handle a 7MB/sec transfer rate if you left it as it came with a giant C:
> partition under W98. This is just enough for a video stream if the computer
> were able to encode everything at the full frame-rate. However, windoze has
> its share of hiccoughs which then cause dropped frames. The dropped frames
> end up giving the encoder fits which cause even more dropped frames. It seems
> to me that the video encoder works just fine at smaller (teleconferencing over
> V.32 modems) resolutions, ditto the sound card. But if you want to record
> VHS-quality (320*240) or better video, you're going to have to defer the sound
> recording for later and sync it up with the vid at that point.
>
>
>
--
Mick McQuaid, mcquaid_at_u.arizona.edu
520-621-4074 office / voice mail
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