#My Favorite X-MAS Movie
5 messages in this thread
I think anything going to video needs field rendering. It's rare that it
fails to deliver a better image.
One primary reason is that field rendering eliminantes frame flicker. Frame
flicker is not an alias problem, it's video's. You can easily see frame
flicker in video if you bump up the camera's shutter speed (many home video
cameras offer this feature now). When you increase the single frame
clarity (and resolution), you add frame/edge flicker.
If you must record non-field rendered images, then you should use VBLUR to
help soften the hard edges. I did a number of tests where I used VBLUR at a
number of settings to find the ideal value. It would seem the best results
it are found between .of
4 and .6.
Also, right now my tests shows that rendering to the lower NTSC resolution,
512 x 486, produces a cleaner animated image. In fact, of the Autodesk
supplied segments of the Release 2 video, 95% are 512 x 486 with fields.
Jamie
The problem I have seen is not just limited to video, I've seen it on flics
too. It's usually caused by having thin vertical geometry in front of other
geometry when both share similar hue, but different luminance and the
camera is approaching or receding from the objects. For example, I had a
hi-rise building that was a light tan marble colour, the horizontal and
vertical score lines in the building were created by the modeller as
geometry and placed just in front of the wall. As the camera approached the
building from a distance (playing back the flic) the score-lines flickered
on and off as if the renderer wasn't sure if they should be invisible or
not from a distance and kept changing it's mind. I know that if the
scorelines had been created by a texture map the problem would not have
occurred but that was not the case in this instance.
I can't be convinced that this is just a NTSC problem since I've seen the
same situation causing havoc in renderings to flics, video with fields and
without. I'll try and get an example of this.
Martin, as usual, if you've got an example .prj file that you're interested
in having me take a look at, send it on over.
– G
I'm working on that for you.
I'd like to see it as soon as possible, please. Thanks,
– G