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Post #601162

Author
AntcuFaalb
Parent topic
Wanted: Technidisc (a.k.a., Smear-free '93) Trilogy: I now own it!!!
Link to post in topic
https://originaltrilogy.com/post/id/601162/action/topic#601162
Date created
11-Oct-2012, 1:23 PM

You_Too said:

AntcuFaalb said:

Plus, doing a median-of-five requires five captures from each LD side.

Didn't you say the median of five reduced the vertical resolution to half? That wouldn't be wise when trying to preserve a Laserdisc.

Oh, no, it doesn't at all. (For example, LeeThorogood's PAL THX preservation used a median-of-five and was full-resolution.)

I chose to average the even and odd fields in PS78 (thereby halving the vertical resolution) because it resulted in a cleaner picture and restored the original aspect ratio. That, however, was a PS78-specific choice made by me and had nothing to do with the median-of-five process.

Using a median-of-three or median-of-five is common practice in capturing from laserdiscs because the averaging lessens (and, often, eliminates) drop-outs in luma and rainbows in chroma.