a couple of newbie questions

fonque · Post by **fonque** » Mon Aug 18, 2003 1:34 pm

oh so the new sol biance, and im sure there are more, are actually animated in 59.94 fields a sec in the first place?

thats where the confusion was at.

ok now i just got about 10 more questions from answering that

fonque · Post by **fonque** » Mon Aug 18, 2003 1:42 pm

i know im askin alot of questions, but this is alot to digest especially since i dont have comp yet to practice on, i will soon though

When i capture a clip, how can i tell if its interlaced or progressive? also how can i tell what frame rate its supposed to run at?

Also how does the codec i use to capture (HUFFYUV for me) affect frame rate and it being interlaced or progressive?

Shun · Post by **Shun** » Mon Aug 18, 2003 1:46 pm

Well i think i can grab one of those, from my experience if the video is interlaced you will be able to tell fairly easy. Every movement made will leave kind of little lines behind it and such, or atleast it did for me. However there are some much much more expierienced editors that can clarify this

Eek-1 · Post by **Eek-1** » Mon Aug 18, 2003 7:32 pm

http://www.animemusicvideos.org/guides/ ... video2.htm has an example pic of an interlaced clip.

klinky · Post by **klinky** » Tue Aug 19, 2003 1:31 am

fonque wrote:oh so the new sol biance, and im sure there are more, are actually animated in 59.94 fields a sec in the first place?

No.

Only certain sections are animated at that speed. Usually pan shots. It would be incredibly hard to do interlacing by hand. Usually a machine is used in these processes.

The idea to break away from frames/fields. Is to stop thinking of a field as a _JUST_ a half-frame. It is it's own entity. It captures the even and or odd lines of an images action. Each one is different from the last. It's capturing the even lines at one moment, then the odd lines at the next. Used in conjunction with a interlaced device that plays these back @ their required 59.94fields per second you will get the illusion of 60 whole-frames per second. But at half the bandwidth cost.

When you view interlaced material on a non-interlace device(progessive), then it needs an entire image. So usually the odd and even fields are paired together to make an whole image. But since they are not exactly alike, the image will look a bit offset. How noticable this is depends on the image. Also when you display interlaced material on a progressive display, since you're showing two fields at once, you only need to have a playback rate of half of the interlaced device. So it's displaying two fields as a single frame at 29.97fields per second.

With anime and movies interlacing is not that much of a problem because alot of anime is still done by hand and digital processing has not taken a entire hold over anime. Also film movies are usually shot at a progressive 24 frames per second. The interlacing in these is induced from by telecining. Usually this can be reversed. Also you may not notice interlacing as badly on a progressive display with anime or movies because since they were progressive to begin with the two fields that are being meshed into one belong to the same instance in time, so they merge perfectly(since they were never actually separate). The only time you notice a problem is when the telecining kicks in and meshes two fields from different frames. You'll really notice it if it kicks in on a scene change.

Ugh, ok wrote too much.

:\

klinky · Post by **klinky** » Tue Aug 19, 2003 1:33 am

29.97fields per second.

should be FRAMES PER SECOND.

Shun · Post by **Shun** » Tue Aug 19, 2003 4:05 pm

ek1 wrote:http://www.animemusicvideos.org/guides/ ... video2.htm has an example pic of an interlaced clip.

Yah those are the fugly lines i was talking about.

If you use AVS script than you can get rid of that in like 2 easy lines. The guide is very helpful if you do it step by step.