Capturing at XXX x576 PAL resolutions

[Waylander076]

Question folks....If I capture at 352x576 or 720x576 resolution the
576 vertical should capture both fields of an interlaced picture correct?
On that assumption there should be NO interlace artifacts on my
capture because i'm capturing both vertical fields.

So why is it that if i capture at any XXX x 576 resoultion I still see
the interlace artifacts (the horizontal lines when someone or something moves)?
Surley there should be no interlacing if I'm capturing the full vertical
resolution of a PAL TV?

The movie in question is a PAL video of Dirty Harry in the Dead Pool
being captured on a WIN TV PCI card, AMD Athlon 850Mhz at 720x576
(for later conversion to SVCD) with the MJPEG codec, 25fps with 44khz audio, overlay and preview off and no dropped frames!

Any answers greatfully recieved....

Regards
Waylander

[Dave B]

You've got it the wrong way round.

By capturing both fields you will see interlacing artifacts. If you only capture a single field (XXX x 288) you will not see artifacts.

Interlace artifacts are only present when you watch an interlaced source on a progressive display. For example, artifacts can be seen when watching an interlaced source on a computer monitor or on a VCD (VCDs are progressive)

If the final destination of your video is SVCD or DVD then you don't need to do anything, just author and burn. If the video is destined to be a VCD (or a DivX..) then you must deinterlace before authoring. Either way you will not see the artifacts when you watch it on TV.

[Waylander076]

So i can capture at 720x576 and burn as SVCD and the interlace
artifacts won't be present?

Waylander

[epo]

Only one more thing: You should encode with A or B field order (not full frame). Movies (progressive!) OTOH as full frame.