Flickering images in my final dvd

Hi, recently used compressor and then dvdsp to get a final sd dvd. *all was recorded in sd.
when I played back the final video in a home dvd player (LG dvd player connected to a sony trinitron tv)
the video image in some parts seems to have flickering.
specially when there is movement and /or when you see a logo moving across the screen.
*if I use another home dvd player (other brand) it looks with a better image quality, with less flickering
but whe the logo appears moving across the screen the flickering appears.
*notice that when I connect my G5 directly via a canopus device to the tv, I see no flickering
ANY IDEA?
THANKS!!

You won't see it on a computer as FCP generally is showing you only one field of the frame. You need to be monitoring the material on an interlaced monitor to see it while editing.
The following is a way to address the issue in Final Cut Pro before you export it to build and burn a DVD.
The flickering is an artifact of the interlaced nature of video. It is a result of very thin (often horizontal) elements that exist on one scanline as is common in text or titling. This can also be the case in images with great deal of detail with high contrast as well as when when you are engaged in pan/zoom moves on stills.
As the alternate fields play, the flashing element is essentially being turned on/off. The basic strategy is to get the element to exist over two scanlines so it is refreshed every time the field plays or to reduce the amount of contrast so the difference between ON and OFF is not noticeable.
Before you start any of these steps listed below, make sure you are viewing your material on an appropriate monitor. If you are working in an NTSC/PAL interlaced format (eg DV) you need an external TV monitor - not a computer screen. Without the appropriate device, you are playing blind.
Things to try (In increasing order of image degradation)
• (in FCP) field order>none
• (in FCP or Photoshop) reduce whites by 10% - reduces overly bright areas
• (in FCP) flicker filter - minimum
• (in Photoshop) motion blur>vertical> .2 - .5 pixels - blurs vertically only
• (In FCP or Photoshop) Gaussian blur> .2 - .5 pixels -blurs both horizontally as well as vertically
• (in FCP or Photoshop) deinterlace - throws away half the image and is generally not appropriate on scanned images
Remember: Unless you are viewing your work in the appropriate external NTSC/PAL monitor, you are playing blind. The computer monitor only shows you a proxy image.
One final thought, if you have slowed your material significantly, and have not used some sort of frame blending/optical flow processing, you may be simply duplicating frames to create the additional material to pad the playback. The flashing you see is the result of this.
good luck.
x

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