Aeg Black lines in Quicktime movies and Ref's

Matt Sconce

Matt Sconce

Veteran
Hello everyone! Whenever I export a movie in Quicktime that has motion in it, I get black lines in teh movement. Why is this and how can I fix it? Here is a sample of the footage. Watch the hand with the leaves and some of the leaves themselves. They have black lines appear in them. Which codec and settings am I supposed to use to get beautiful clips from AVID? What do you use?

Sorry for the large file size...I wanted you to see this in all of it's black lined glory:

http://www.eagleasda.com/Test_Black_Lines.mov

by the way...the Sony VX2100 was used for this shot, in case it makes a difference.
 
krestofre said:
That looks to be interlacing. Since you shot with a VX2100 I'm assuming that this came from a 30i timeline in Avid? Interlacing is a normal part of 30i video. You see it very well con computer monitors, but if you take that QT clip and author it to DVD I bet you woudln't see it on a TV. If you do see it one a TV then there's an issue with your field order, but we can cross that bridge when we come to it ... if we come to it.

Chris
Click to expand...
I authored it to DVD, and am now checking it on a computer monitor. .......Okay the lines do not show up on the DVD....let me check my 52 inch LCD T.V.............Okay no lines there either. So the picture does not have issues when burned to a DVD, but what about if I transfer files to clients? If you want to export to Quicktime format, what would be the steps you would take? Any specidfic setup of codecs or anything? I have After Effects 6.5 pro, and Sony Vegas, as Well as Avid Xpress Pro, if we need to export to one of them to fix the problem. Thank you for your time.
 
That looks to be interlacing. Since you shot with a VX2100 I'm assuming that this came from a 30i timeline in Avid? Interlacing is a normal part of 30i video. You see it very well con computer monitors, but if you take that QT clip and author it to DVD I bet you woudln't see it on a TV. If you do see it one a TV then there's an issue with your field order, but we can cross that bridge when we come to it ... if we come to it.

Chris
 
what about if I transfer files to clients?
Click to expand...

It depends on your intention. Do you just want them to watch it on their monitor, or are you sending them files to work with?
 
krestofre said:
It depends on your intention. Do you just want them to watch it on their monitor, or are you sending them files to work with?
Click to expand...

I would be giving them the files on backup file storing DVD's. They would watch them on their computer. Would de-interlacing help?
 
Let me try to answer you like this:

If the video is going to be watched on a TV, then it needs to be interlaced since that's how all NTSC televisions work. If it's going to be watched on both a PC and a TV, then you're going to have to compromise somewhere.

If you're making a Quicktime file or a Windows media or something, then yes, deinterlacing will help.

If you're storing the video clips with the potential or reloading them into your NLE for future editing, then you want to keep them intact, and therefore keep the interlacing.

Clear as mud?
 
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