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john o flaherty
rolling lines on footage
on Aug 28, 2015 at 10:40:15 am

Hi Guys,
I shot some footage of a powerpoint presentation the other day, but viewing it now it has rolling lines on it! before I render it is there anything I can do to hide these rolling lines, also any other tips to make a boring powerpoint presentation look any better? (it visually looks dull) many thanks john.


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John Rofrano
Re: rolling lines on footage
on Aug 28, 2015 at 1:09:21 pm

What caused the lines? Did you video a computer screen? I would get a copy of the source presentation and export it as a series of images and create a slide show from it in Vegas Pro. This will give you the best quality.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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john o flaherty
Re: rolling lines on footage
on Aug 28, 2015 at 1:24:43 pm

Hi john,
do you how sometimes a TV camera would have a shot of a room, and in the room is a tv and the picture on the TV is never clear it is always rolling up and down, well like that! I was just wondering was there a filter available that might tone down the rolling? over 200 powerpoint slides so I would rather no go down that road. many thanks for your help on this John


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John Rofrano
Re: rolling lines on footage
on Aug 28, 2015 at 4:59:25 pm

Yes, I know what you are talking about. It's caused by the refresh sync of the computer monitor not being the same as that of the camera's electronic shutter. Unfortunately, I don't know of any plug-ins that can fix this.

You might want to try Boris FX BCC Flicker Fixer but this will just fix the light flicker. It won't erase the sync line that rolls down the screen.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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john o flaherty
Re: rolling lines on footage
on Aug 28, 2015 at 9:48:32 pm

OK, as always many thanks for the help john, appricate it.


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Graham Bernard
Re: rolling lines on footage
on Aug 29, 2015 at 4:15:48 am
Last Edited By Graham Bernard on Aug 29, 2015 at 4:57:44 am

I'll have a go at why. When shooting interlace on my DV Canon I had a CLEAR SCAN setting just for countering this issue. Can you reshoot? Have you got a clear scan option on your camera? Cure? I'm almost sure there isn't one. However, how much of this footage do you need to correct? If it is a moderate amount (?) then you can, I have, mask out the offending footage on the monitor, and replace with either a still of anything or maybe a time-stretched piece of the offending scan lines. How relevant is the monitor footage to the narrative?

I've just re-read my XF300 User Manual and there is a CLEAR SCAN option too.

How to make PP interesting? This is an oxymoron! But I like a challenge. However, is this what is wanted by the client?

Grazie

Video Content Creator and Potter
PC 7 64-bit 16gb * Intel® Core™i7-2600k Quad Core 3.40GHz * 2GB NVIDIA GEFORCE GTX 560 Ti
Cameras: Canon XF300 + PowerShot SX50HS Bridge


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Steve Rhoden
Re: rolling lines on footage
on Aug 29, 2015 at 7:57:57 am

I indeed understand your dilemma flaherty, and unfortunately there is
no on click solution or plugin to fix that, your best option is by masking
as how Graham explained it, hopefully you had the camera on a tripod to
make the masking process easier!

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
http://www.facebook.com/FilmexCreativeMedia


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John Rofrano
Re: rolling lines on footage
on Aug 29, 2015 at 12:47:58 pm

All that masking and stretching sounds like a lot more work than just making a slide show from the original presentation.

One solution is to watch the video and drop a marker at each slide change. Then buy my VASST Still Motion plug-in ($9.95 USD) and use the Place Events at Markers options and it will place a new slide at each marker for the duration of the next marker. This shouldn't take long at all at all and will be very high quality.



~jr

http://www.johnrofrano.com
http://www.vasst.com



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Bob Peterson
Re: rolling lines on footage
on Aug 29, 2015 at 3:55:11 pm

I agree the plug-in is a good way to go as long as the only thing in the video image is the PP. Otherwise, the only obvious solution is to display the screen capture over the video. I don't think a mask is needed. You can simply superimpose screen captures from the PP.


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john o flaherty
Re: rolling lines on footage
on Aug 31, 2015 at 6:38:27 am

Guys thanks so for much for the help and advice, I am going to insert the original PP slides over the footage (jpegs) simplest way forward for me, although probally not the quickest.
Regards
John


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