Video Editing Forums: Digital Director - View Single Post

Mark W · #2 (**permalink**) 02-13-2008, 01:21 PM

Your camera shoots in interlaced.

History

Early television screens relied on a scanning electron beam hitting a layer of 'phosphur' on the screen to create light. The beam scanned the scree and the phosphur glowed, but it didnt glow for long enough.

With the electron bean scanning top to bottom of the screen every 25th of a second the phosphur at the top stopped giving off light to soon.

The fix was interlacing.

Instead of scanning line 1 to 625 one after the other the beam scans even then odd lines. First 50th the even lines, second 50th odd lines.

This also means that motion is presented with much less jerkiness - incidentally this why i dont like 25p - rubbish for anythng moving.

To keep best picture quality stay in interlace all the time. For webcasting render a progressive version (monitors are progressive).

If you use slomo / speed up or track motion you may need to dinterlaceaffected clips to avoid weird effects as the fields are disrupted.