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Some notes on capturing.



 
 
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  #1  
Old January 3rd 04, 06:30 AM
Bill Davis
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Default Some notes on capturing.


I have been attempting to build a editing shop for over a year with the
below hardware and software and others but am still unsatisfied. A few
observations.

XP was totally unsatisfactory due to lockups and program aborts. Moving
between hardware boxes didn't make much difference (I have a dozen or so
available.) Changing to Win2000 fixed a lot of that stuff, but not all.
Linux is much more stable but so far there is very little quality video
editing available - certainly nothing polished like Studio 8 - so I am
sticking with Windows till and if that situation changes. Yes, I know
that all the pro rendering shops use Linux, but the software is homegrown
by teams of programmers and I have no access to it.

The AIW 9000 captures much better than the AIW 7500, a couple of Avery
cards I have tried and a USB capture box that I can't remember the name
of. I have a new Adaptec USB Videoh USB2 which seems to work very well
but I have not used it enough yet to say.

The major problem with the AIW series is the built in Macrovision
detection which is a MAJOR headache. The reason for it is obviously to
try to prevent the capture from DVDs and pre-recorded tapes (it doesn't)
but it will also detect any less-than-perfect VHS data streams, decide
that you are a pirate, and trash the input. I had to use a SIMA sync
inserter to fix that problem. The Adaptec apparently doesn't have that
problem - I hope.

Studio 8 is the best software that I have found from a usage standpoint.
Has a great and easy to use interface, but will unexplainably drop the
sound at random intervals - maybe once per movie, maybe 5 times. It will
also more than occasionally render an MPG that in which the sound will
gradually fall behind the video. And occasionally, at the interface of an
edit, insert a VERY loud metallic screech which will make you jump when it
hits. Again, I have multiple hardware to try it on and it does the same
thing on all of them.

The Sonic MyDVD fixes most of the problems with Studio 8 but is nowhere as
easy to use and Ulead is a disaster. MyDVD also will build a DVD/VCD with
the sound out of sync quite often.

So far I have had little luck unless I capture at the exact bit rate,
resolution, etc that I want to render at and almost none at producing
media of consistant quality.

So far, the best results have been to save the captured and and rendered
data as a MPG data file and just play it back through the TV card.

Anybody having any luck with the above?

Bill

  #2  
Old January 3rd 04, 09:23 AM
Kev
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Posts: n/a
Default

The AIW 9000 captures much better than the AIW 7500

well it does have the theatre 200 chip. the aiw ve which uses the 7500
also has it.
  #3  
Old January 3rd 04, 12:01 PM
Fred
external usenet poster
 
Posts: n/a
Default


"Bill Davis" wrote in message
news

I have been attempting to build a editing shop for over a year with the
below hardware and software and others but am still unsatisfied. A few
observations.

XP was totally unsatisfactory due to lockups and program aborts. Moving
between hardware boxes didn't make much difference (I have a dozen or so
available.) Changing to Win2000 fixed a lot of that stuff, but not all.
Linux is much more stable but so far there is very little quality video
editing available - certainly nothing polished like Studio 8 - so I am
sticking with Windows till and if that situation changes. Yes, I know
that all the pro rendering shops use Linux, but the software is homegrown
by teams of programmers and I have no access to it.

The AIW 9000 captures much better than the AIW 7500, a couple of Avery
cards I have tried and a USB capture box that I can't remember the name
of. I have a new Adaptec USB Videoh USB2 which seems to work very well
but I have not used it enough yet to say.

The major problem with the AIW series is the built in Macrovision
detection which is a MAJOR headache. The reason for it is obviously to
try to prevent the capture from DVDs and pre-recorded tapes (it doesn't)
but it will also detect any less-than-perfect VHS data streams, decide
that you are a pirate, and trash the input. I had to use a SIMA sync
inserter to fix that problem. The Adaptec apparently doesn't have that
problem - I hope.

Studio 8 is the best software that I have found from a usage standpoint.
Has a great and easy to use interface, but will unexplainably drop the
sound at random intervals - maybe once per movie, maybe 5 times. It will
also more than occasionally render an MPG that in which the sound will
gradually fall behind the video. And occasionally, at the interface of an
edit, insert a VERY loud metallic screech which will make you jump when it
hits. Again, I have multiple hardware to try it on and it does the same
thing on all of them.

The Sonic MyDVD fixes most of the problems with Studio 8 but is nowhere as
easy to use and Ulead is a disaster. MyDVD also will build a DVD/VCD with
the sound out of sync quite often.

So far I have had little luck unless I capture at the exact bit rate,
resolution, etc that I want to render at and almost none at producing
media of consistant quality.

So far, the best results have been to save the captured and and rendered
data as a MPG data file and just play it back through the TV card.

Anybody having any luck with the above?

Bill



As someone who has tried many methods of capturing video over the last three
years with inconsistent results I empathise with your problems. Six months
ago after a few weeks of research on the Net I tried a new method that works
really well and it works really well all the time.

I now feed the video and audio analogue signals to a DV camera that has a
VCR mode. In this mode the camera converts incoming analogue signals to DV
format and sends them out via it's IEEE1394 (Firewire) port to your
computer. All the encoding is done in real-time within the digicam. The
output via IEEE1394 is an easy 3.6Mb/sec (13Gb/hour) that any half-decent
system can handle. The DV stream is buffered so well that I can go about
using the PC for other tasks while capturing without dropping a single
frame. The audio is always in synch, the quality is sensational and editing
is easy.
After editing the DV file the final step is to convert it to MPEG2 and then
author the DVD files and burn the DVD. The transcoding to MPEG2 can take a
while. Using TMPGenc takes several hours for one hour of DV but CCE is a lot
faster as it can transcode in nearly realtime, depending on the settings
used.

Cheers,
Fred


 




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