DV Rendering Problems.

jjyoung wrote on 4/30/2001, 9:59 PM
I have a project where I'm editing DV from 2 cameras. I am
using Pan/Cropping to enlarge some of the scenes by about
200% (the guy that shot the scenes had it zoom way out so
the people looked too small). When I render to DV I get
horizontal striping on any fast moving object (by which I
mean someone walking fairly close to the camera. I've
tried many different settings (progressive, lower, upper)
with no success.

Comments

jjyoung wrote on 4/30/2001, 11:37 PM
I've found out a little more about the problem. It appears
that the problem occurs during video capture. The miniDV
camera (Cam 1) that I'm using to capture the video is
different than the camera (Cam 2) that was used to record
the tape. Cam 1 is progressive. I don't know about Cam 2,
but I suspect it is interlaced. I did an analog to digital
conversion by taking the analog output of Cam 1 and running
it through a Sony Digital8 camera that I have and capturing
the output of the Sony Digital8 using VideoCapture. The
horizontal jitter seems to be reduced, but still there.

Does anyone know of any solutions to this?
Rockaway17 wrote on 5/1/2001, 6:50 AM
My best guess would be to turn on the resample switch.
SonyEPM wrote on 5/1/2001, 8:45 AM
You can selectively change footage to progressive (just the
camera 2stuff), in either the media pool or at the event
level.

You might also be seeing some scaling artifacts- maybe try
a little motion blur or a short section and see if that
cleans things up.

As stated in an earlier post, there is seldom a need to
resample all video, and it adds greatly to render times.
jjyoung wrote on 5/1/2001, 10:38 AM
If a tape was recorder in a camera that does interlacing
and is capture out the firewire port from a camera that is
progressive, what format will the media file be in? I've
tried a number of settings and it doesn't seem to make a
difference.
SonyEPM wrote on 5/1/2001, 11:01 AM
If footage was recorded as progressive, it will get passed
from any DV camera, through 1394, as progressive. The
opposite is also true in all 1394 cameras I am aware of-
jjyoung wrote on 5/1/2001, 11:19 AM
So, if i'm capturing lower field interlaced video from a
progressive camera, the media file should be set to lower
field?

Then, when I render with the intention of printing to tape
to the same progressive camera, I should have the render
set to progressive?