TV/Monitor bars removal?

ric-kemp wrote on 9/21/2018, 7:48 PM

Hi,

Ongoing nube so very basic.

Am trying to remove strobe-like bars moving up a video (mpeg4) I made of my own photograph on my video monitor. So I have videoed the still image off a flat-screen. I have tried many Vegas filters on the resulting strobe-like video, and none seem to do anything - anything at all.

Guidance please.

Thanks :)

 

Comments

Musicvid wrote on 9/21/2018, 9:00 PM

You cannot shoot a 60Hz screen on NTSC without phase mismatch. Why did you want to shoot a tv screen?

ric-kemp wrote on 9/21/2018, 9:55 PM

It's an experimental video.

What Vegas filter can remove those bars please - & is there a filter to remove 'moire' please? - which you also get videoing a pc monitor. Thanks.

Musicvid wrote on 9/22/2018, 10:23 AM

Record at EXACTLY 30.000 or 60.000 fps, which are exact multiples of your tv screen refresh rate! Not NTSC.

This will slow it down, but not eliminate completely.

ric-kemp wrote on 9/22/2018, 1:26 PM

Thank you - I don't want to eliminate the effect entirely, it is an experimental video. What Vegas filter can reduce or soften those bars - ditto 'moire' please? - which you also get videoing a pc monitor. Thanks again.

Kinvermark wrote on 9/22/2018, 2:01 PM

It's typically called "flicker" or "strobing", so google those terms and you will gets lots of advice.

You are very likely going to need a plug-in like this:

https://digitalanarchy.com/Flicker/main.html

Which, of course, isn't free.

ric-kemp wrote on 9/22/2018, 3:59 PM

 

Thanks Kinvermark :)

In fact I applied a Boris BCC DeFlicker filter & it sorted it. But it took ages, Vegas Pro seemed to take a long time to get into it, crashing several times in the process. But eventually I worked out how to open the FX Browser & see the filter in progress, what a great moment that was! :]

Now all I have is screen 'moire' to soften, the above Boris filter helps but I just wondered if there was a dedicated anti-moire filter that can work with Vegas Pro please?

Need to experiment with Vegas more - I do a project then don't look at Vegas for a while, so I forget the various stages - but it's getting better :)

Kinvermark wrote on 9/22/2018, 5:25 PM

Can't remember ever seeing a generic "anti-moire" filter. Except gaussian blur. Buts that's not really a very subtle way to fix it. :)

 

Robbie wrote on 9/22/2018, 7:04 PM

You might be able to get some improvement with an intelligent noise reduction filter (eg Neat Video) - emphasis on might. May also be able to reduce it if you can re shoot at smaller aperture or zoomed in for a tighter shot which may not be an option in your case. Cheers, Robbie

ric-kemp wrote on 9/22/2018, 10:30 PM

Thanks Guys, the BCC DeFlicker helps a lot because it sees the moire as fluctuating lines of light and dark.