Compressed video gets jagged horizontal lines at DVinfo.net

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Canon VIXIA Series AVCHD and HDV Camcorders
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Old December 31st, 2007, 03:41 PM   #1
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Compressed video gets jagged horizontal lines

Hello,

I bought Canon HV10 and must say that it's the best camcorder I've owned yet!
One problem though, when I try to render my video to MPEG-2 in Sony Vegas, after conversion I get these jagged horizontal lines whenever something fast happens in the video (car is driving by, person is running). Why is that? What am I doing wrong?

thanks,
Alex
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Old December 31st, 2007, 03:50 PM   #2
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And the horizontal lines look exactly like this: http://docs.info.apple.com/article.html?artnum=25318

I am not sure about the "Movie Mode" because connecting camera straight to TV does not have these lines.

Alex
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Old December 31st, 2007, 06:09 PM   #3
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that's just interlacing, you're not doing anything wrong, and when you view it on a tv, like that apple doc says, you won't see it. i'm assuming you're exporting to mpeg2 to make dvds? if so you don't have to worry about it, as it won't show up on the tv, and if you play it back on the computer most players have an option to deinterlace.

you're other option is to deinterlace before you export it, that way regardless of what you export to it will have clean images.

you'll have to get one of the guys here with more vegas experience to help you out with the deinterlacing process
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Old December 31st, 2007, 08:05 PM   #4
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You need to deinterlace before scaling. Vegas can do it for you.

Last edited by Michael Jouravlev; January 1st, 2008 at 02:33 PM.
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Old January 1st, 2008, 03:26 AM   #5
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Are you rendering out to the same resolution or scaling? If scaling, in the project properties you need to set deinterlace to either Blend or Interpolate. And make sure Vegas is reading your source video correctly (it probably is) - ie it's top field first for HDV. Having said that, I'm not particularly happy with Vegas's downscaling as moving diagonal lines have jagged edges (more than you'd normally expect from interlaced NTSC). So I'm considering purchasing Procoder as it does a brilliant job of scaling interlaced video.
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Old January 2nd, 2008, 09:34 AM   #6
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Thanks for the help guys!

I believe I was deinterlacing my footage correctly, but may be it's the properties I am setting when it's time to rendered, at least according to this: http://www.dvinfo.net/conf/archive/i...p/t-14408.html

I'll try to play with this some more.
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Old January 5th, 2008, 06:32 PM   #7
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If your footage has those lines, then you are definitely not deinterlacing correctly.
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