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Posted by William Davis on 09/15/06 22:46
In article <450AEA9D.733E901D@thelogconnection.com>,
Gary Hasler <garyhasler@thelogconnection.com> wrote:
> William Davis wrote:
> > ...Figuring out what KIND of AVI file (codec/variant) that you need for
> > output. That will depend on what you realistically need to do with them.
>
> I am basically updating a video about our business; we had one done in
> 2000 by a guy who has since closed down and sold all his equipment, but
> he gave us the raw footage tapes. I will be using Premiere to create an
> approx 10 minute video combined with computer animation. This video
> will be a bonus feature on a DVD of log homes we sell. I typically use
> uncompressed avi source files, but uncompressed 30min x 30 fps x
> 27MB/sec = 24 GB per tape! 10 tapes MAY just fit on a 250GB hard
> drive...
>
> If the only way to do it is with an analog capture setup, I guess they
> would use some codec anyway.
Gary,
OK, that's a bit clearer.
You say you work with "uncompressed AVI source files" but if if you have
any video sources other than the D9 stuff you'll be using, chances are
they ARE compressed.
Unless something very weird is going on, whatever camera they're being
shot on is compressing them to tape during origination. If they're
shooting a DV variant, it's a 5:1 compression at the camera to create
the DV datastream.
The D-9 guy was recording at higher data rates, but if you have ANY
other footage originated on something other than DVCPro50 or Digibeta,
you're already dealing with 25Mbps video.
If that's the case, don't sweat the D9 downconversion. Just do what Mike
suggested and do a cable transcode to DV25.
Sounds like its deck rent/borrow/beg time. But if you can get a firewire
transfer out of whatever you end up using, you can literally just hook
it up to any firewire capable camcorder and the bits will transfer just
fine.
I see a LOT of people struggling to build and maintain an "uncompressed
data flow" in editing, not realizing that they're working with
compressed originals. A lot of expense and effort to maintain something
that wasn't there in the beginning.
The reality of the industry today, is that well shot 25Mbps DV data
rates are more than fine - particularly if your eventual target is MPEG2
compression onto DVD-Video.
Let us know how it goes.
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