On Mon, 13 Jul 1998 04:22:16 -1000, Morris Osedo wrote:

>Some DV NLE solutions with firewire only in/out sound good and advertise
>rendering transitions only for speed, but there seems to be a MAJOR flaw
>with this. Namely, luminance and chroma correction of the video. To do
>this, every clip that needs correction and sometime the entire project
>needs to be rendered which negates the transition only advantage.
>Rendering an entire 1 hour edited video will take many, many hours not
>to mention possibly inducing digital artifacts into the video.
>
>With analog NLE cards, or DV cards like the DV Master or DVRex with both
>DV and analog in/out, one can make luma and chroma corrections to the
>video using an external proc amp while capturing video to the hard
>disk. And the DVRex advertises capability of luma/chroma correction on
>its analog input.
>
>How are users of firewire only in/out NLE systems coping with this
>problem? Is there something I'm overlooking? Thanks.

Hmmm, you have summed up the difference between analogue (only) and
digital (only) editing... In DV (only), one can make all kinds of to-the-frame-accurate changes, but the cost is time (and the occasional need to redo if an error occurs...). In analogue (only)
editing, overall changes are easily made, but accuracy is another matter... In the combined system, there is the best of both worlds,
but the "price" is high cost. I recently bought a Sony TRV-9
camcorder, which has analogue inputs. This allows me to put an
analogue video EQ between DV camcorders when making a copy, so I
can now make corrections on a tape copy and use this as the original.
Before this, the clips had to be right in the first place, or in need
of corrections only in very short parts, or so bad and so necessary
that it was worth spending the time to rerender long clips. In a
current project it has been useful to have the digital solution,
slow as it is: in a two-camera shoot, one of the cameras needed to
be left running unattended. I used this footage as cut-away material,
but to vary the framing, and to somewhat follow the action, it was useful to apply digital motion and moderate cropping to the clip
(with varying sharpness applied to improve the most-cropped footage).
The 3-hour wait for the three-minute clip was worth it...;-)
(I don't think you overlooked anything - it is amazing to be able
to do what we can do on a home computer, but the process is not
yet what one would call fast...;-)