Flickering Video

Invisible wrote on 1/10/2003, 11:10 PM

I rendered a 30-min AVI file, and printed it to tape. The video is just flickering so bad it gives me a headache. I tried "Reduce interlace" without any improvement. "Resample" doesn't help much either.
I have P4, 1.9Ghz, 512MB RAM, 40GB HD.

Why does it happen? How can I fix it? Could it be the firewire I'm using? The captured video is fine, so it may not be the wire. The flickering video only happen after it's rendered.

Please someone help me on this. Thanks in advance!

Comments

Grazie wrote on 1/11/2003, 2:59 AM

Need a wee bit more detail on your settings - yes? I think others will ask you the same.

However, two question I've got for you are:
1- The PTT did it include any changes - ie dissolves, cuts, splices or any fxs?

2 - If so, have you tried to PTT straight back to your cammy a piece of unadulterated dv, without any edits of any kind?

Cheers

Grazie

Invisible wrote on 1/11/2003, 3:16 PM

Hi Grazie,

To answer your question:
1. I did add some dissolves, trimming, eveloping (Audio, and video) and some Video effects.
2. I did not try PTT that way. Maybe I should. Thanks

I used "NTSC DV" template to render.

I appreciate any help! Thank you!

ByronIV wrote on 1/11/2003, 5:39 PM

Perhaps the fields are out of order? That would cause a jittery flickering playback on a TV or dv cam as well.

sonicboom wrote on 1/12/2003, 1:46 AM

try rendering to BEST quality

Grazie wrote on 1/12/2003, 2:12 AM

Invisible - Have you tried to do the "straight" render back yet? Or the other options Byron or Sonicboom? I'd be interested how you get on. This could assist me in the future too. I run PAL here in the UK - but some issues are global - yes?

Grazie

frak wrote on 1/12/2003, 5:09 AM

your field order is wrong. Try swapping field orders (it's most likely set to lower
which is DV).

frak

mikkie wrote on 1/12/2003, 8:38 AM

For what it's worth...

If you try outputting any footage as suggested earlier, you should be able to tell if the problem is in the hardware you use to output the signal.

VV will interlace stills for you. Might want to try checking to make sure you're not telling VV to interlace video that's already interlaced.

If you try rendering a small portion of your clip progressive rather then interlaced, that should tell you if field order etc. is a problem. Also, a lot of hardware will automatically handle the interlacing for you when you output the video signal -- if you've got say a driver problem for example screwing up the field rendering, this might be a solution.

As far as fields go, you need to know the field order of your original video -> right click on the video in the time line, select properties, & on the second tab make sure it's listed correctly -> then go to your project properties, making sure that all of the video settings match your clip(s). You can set something different in your render settings.

What format was the clip(s) in originally? If you're going out to tape, you can use pretty much anything for your rendered clip format, from winmedia to real to picvideo etc., & one of these might work better for you as a format to render to. Of course, if you stick to the original format VV will have less rendering to do, & you'll get less generational loss.

Finally, are the frame rates all the same from start to finish? Just a guess, but I've had some strange behavior once or twice changing it around.