ADVC-100 and iuVCR

[ZenZen]

I have always used Scenalyzer with my Canopus ADVC-100 for capturing and have been pretty happy with the results. However last night I downloaded iuVCR and tried a test capture with No Compression. The resultant AVI was much cleaner than the same file captured with Scenalyzer (especially in the fades). But this comes at a price, namely HD space. You need an 80gb drive to capture just over 1 hour of uncompressed DV to AVI. Still, I think the end result was worth it, and HD prices now so low. Interestly, iuVCR allows Uncompressed capture, but Scenalyzer does not.

Comments, suggestions, etc, most welcome

[FulciLives]

This doesn't make any sense. The Canopus ADVC-100 converts an analog A/V source into DV video. What you then copy to your computer's HDD is the DV signal. This is a pure digital copy. You can't get better than that.

However ... there are different DV codecs and some are better than others SO depending on what DV codec is on your computer it could make a difference.

I'm no DV expert so maybe someone else can explain it better or offer a suggestion on some of the better DV codecs.

- John "FulciLives" Coleman

[ZenZen]

That's what I thought, but iuVCR is definately capturing Uncompressed, you can tell by the file size. Huge!!!! Scenalyzer offers DV 1 or DV 2 but not uncompressed. I have compared the two side by side, frame by frame, and the uncompressed is definately cleaner. Visually cleaner.
(As you would expect). Yet I am not setting up or selecting any codecs. Simply turning the ADVC-100 on, selecting either iuVCR or Scenalyzer for the comparison capture test, and clicking on capture.

[holistic]

Since the signal from the ADVC-100 is entering the computer as a DV (*.avi) stream it dosen't seem logical to even bother capturing uncompressed as you say. Even as iuVCR is converting the DV to another codec it is inducing losses. I find it hard to believe that the file from iuVCR is of better quality when you consider the source.

UNLESS ........ are you using the analog output of the ADVC-100 ??

][

[FOO]

It might be good to run Gspot or Vdub
or something to determine exactly what this
huge file is. Uncompressed RGB at 720 x 480
is bigger than 100G/hr. 4:2:2 or 4:2:0 might fit.

The Canopus says it outputs DV. Maybe iuVCR
is decompressing it

[vhelp]

.
.
No, I think that what is "actually" happening is this.. the final DV output that
iuVCR is capturing (dv) is being converted to (or, uncompressed from) its
DV format.

The end result is possibly an RGB / YUV of DV, yet in another format, like
Huffy or MJPEG or 411, or divX or whatever other number of CODECs is
on this persons pc, it's unconverting the DV, and re-converting into another
one of these formats, which CODEC is on this persons PC.

Heck, its not bad at all. So, please don't take affence to our analigy of the
situation (its what we all do, when we have nothing else better to do) anyways..

What I was on about, was that for those that DO the DV route, and then
convert to another format in a later step, using iuVCR could save an even
greater step, AND, time !!

w/ respect to the above, I'm guessing
-vhelp