Interlaced Look

[g_shocker182]

Now I don't know exactly what video interlacing is but I got a 5-minute lesson from 100fps.com. Later that week I purchased Pinnacle Moviebox USB. When I captured footage using this, the product on my computer seems like it's interlaced (the video has a "liney" look). But when I output to my TV using Moviebox, the video is flawless with no "interlaced" feel to it. I'm wondering whether this is something to do with computer and televsion characteristic differences or what, but I need some help. Maybe if I "finsh" the video with Studio 8 will help? Thanks!

Eric

[Marco33]

I believe it's because your PC monitor is progressive and the TV is interlaced. So playing an interlaced clip on your PC will show those weird lines.

[g_shocker182]

from thread author:
Is there anyway that I can fix this problem? I know that most of my finished video will go out to the tv via moviebox or dvd w/ mydvd+rw drive but I would still like to see some videos on my computer. Is there any way to "deinterlace it"?

[Marco33]

I believe you can. But first... I would burn the clip to dvd and try it on your PC. It might play fine.

[txpharoah]

A computer can also playback interlaced video. It runs in OVERLAY mode of DirectShow in Windows and your monitor must be set to 60hz. PowerDVD, WinDVD and several other programs use this feature. Most capturing software does it too (though not necessarily on the post-capture playback).

Drag-n-drop your MPEG files into a DVD software player, and it should be fine if your monitor is at 60hz.

Computers play back DVDs all the time, and many DVDs are interlaced. It's not magic. It's simply using the correct settings.

[ap9]

Hi, I had the moviebox USB and now the moviebox DV. I also got 'liney' look on the screen via studio8. But when you create a DVD (I use DVD Complete) - the TV does not show the lines. I did not set/reset anything. You may want to give it a shot. BTW- keep watching your video when it is captured. My moviebox DV stops after 30-35 min and captures stuck pixels. You just ahve to stop/restart the VCR/Camcorder - and you are ready to go... Cheers. AP

[Vejita-sama]

You need to do some searchs on interlace, telecide, and 2:3 pulldown to really understand what's going on. Take a look at:

http://www.doom9.org/synch.htm

It'll answer most of your questions.

[Claire]

I think that you will have interlace if you view on PC files recorded/captured from TV or most cameras without progressive mode. This is because many cameras do not record 25 frames per second, with resolution 720 to 576 pixels - but 50 frames per second, with resolution 720 to 288 pixels: first the even lines are recorded, then the odd ones. Hence, each frame you observe on your monitor is actually comprised of two half-frames, recorded with a 1/50 seconds interval and connected with each other line by line - that is, the first line of the first half-frame - the first line of the second half-frame; the second line of the first half-frame - the second line of the second half-frame; etc. As a result, if the frame contains fast enough movement, then on the second half-frame the moving object has already moved to slightly different position compared to the first half-frame, and at the connection points the "stripes" effect occurs.

To view on PC video inputted from TV-tuner or from TV-in of video card you can first deinterlace it.

I suggest you AlparySoft Deinterlace Filter for VirtualDub
http://www.alparysoft.com/prod/deinterlace-for-vd.phtml

or Alparysoft Video Quality Controller - plug-in for media players, works realtime
http://www.alparysoft.com/prod/quality-controller.phtml

Alparysoft Cleaner for Amateur Video - removes interlace at the final stage of video editing.
http://www.alparysoft.com/prod/video-cleaner.phtml

[Craig Tucker]

This site is very informative, there is a section on interlacing.

http://www.lukesvideo.com