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Rendering for PAL DVD Flickering lines problem
Hi,
I’ve rendered some projects and uploaded them to You Tube and am very happy with the quality of my work however I have a problem.When I convert and render these same projects to DVD to play on Australian PAL television the quality is poor and flickering of (usually) white horizontal lines in the pictures is terrible. This flickering extends to trees and the foliage.
I am using Sony Vegas Movie Studio 9.0b.
I render to the PAL DVD format when burning DVD’s.
I am using photos to create my slideshows and add slight movement or zooming in Vegas to lead the viewers eye to what I want them to see.
Can anyone please tell me how to get rid of this flickering.
Any help would be much appreciated I am making tourism virtual tours and would like to be able to author a quality DVD version as well as the internet vids for You Tube. I have no problem with the You Tube quality just the PAL DVD.
Cheers
Gary -
7 Replies
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I’ve tried rendering in most of the DVD PAL formats but still end up with a vid that has the flicker in it.
There is an error message in DVD Arch that says there is more than the 99 frames allowed would that be what is doing this. I am designing slide shows and usually end up with in excess of 100 photos.
The Photos are sized to 1280×720 so Ideally suit the wide screen format but even when burnt in widescreen PAL the flicker is still apparent.
Many of the images I have sharpened in Photoshop would that have anything to do with the flicker? I use the sharpen mask but only when I’m ready to save the photo.
Is there anything I’ve just said that would cause the flickering?
Cheers
Gary -
Many of the images I have sharpened in Photoshop would that have anything to do with the flicker? I use the sharpen mask but only when I’m ready to save the photo. Is there anything I’ve just said that would cause the flickering?
Yes, so let’s understand what’s causing this. As you may know, PAL TV is interlaced. This means that the full 576 scan lines are separated into two sets of fields, odd and even. First 288 fields from 2 – 576 are shown and then 288 fields from 1 – 575 are shown 25x a second. If your image has detail that is only one filed high, it will only show up half of the time and appear to flicker on and off. This is why horizontal lines how it more pronounced. Details are the enemy when converting images to video and you are sharpening the details making this worse. What you actually want to do is add a slight vertical blur to make these thin details smear to the adjacent scan lines so that the interlacing isn’t so pronounced.
The Photos are sized to 1280×720 so Ideally suit the wide screen format but even when burnt in widescreen PAL the flicker is still apparent.
PAL Widesceeen TV is 1029×576. This is what you should be resizing the photos to. You are making the problem worse by using 1280×720 photos because they are being resized again by DVD Architect which is introducing more jaggies and lines. Resize them correctly in Photoshop to begin with and add a slight blur and the flickering should stop or at least be minimized.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for that info John it will help immensely. It’s a little weird that the same vids look perfect on You Tube but I guess it is a different file format for You Tube than for DVD.
Just so you know I have bought the 9 Vegas training DVD’s from Vaast and had them shipped to Australia so I do subscribe to Vaast. Some of the training in those vids is for the full blown Vegas software.
I was wondering if you could tell me what the advantage is for the full blown Vegas program over the Movie Studio version. When I bought Movie Studio (6 months ago)I didn’t realise there was another version. Are you able to just an upgrade for an extra cost or must I buy the full blown program?
Also I was a bit disappointed that Sony dropped Cinescore before I could get the bulk of the themes. I got some and thought I would just buy as I could afford it but I can’t get them anywhere now so am at a loss for the music I need to have my own copyright music.
I talked an ex band member into buying Vegas and the themes at the same time I did so we could collaborate (he teaches music and was the bands keyboard maestro like yourself) old muso’s must get into production when they stop playing live eh?).
Thanks again for your time. Much appreciated and if you have a suggestion about the themes I would be greatful.
Kindest Regards
Gary Crockett
Australiahttps://www.ozmagic.homestead.com
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Hi Gary,
I was having the same problems needing royalty free music for video production. I found where Bill Myers recommended this site and said this is where he gets his music. I went there and ordered and there is over 3000 high quality songs on the DVDs they send (or you can download the MP3’s) with no “strings” attached. For $80 you won’t be disappointed. I just finished my first DVD and will make it public soon. This link expires when the auction ends but it re-directs to the new auction when you go there. Hope this helps. Good luck!
David Steffy
https://www.PaintingTheWorld.com -
“There is an error message in DVD Arch that says there is more than the 99 frames allowed would that be what is doing this”
That message is somewhat confusing.
You are rendering a single DVD-ready file (MPEG-2 & AC-3 streams) out of Vegas, aren’t you?
If not, what are you giving to DVD Architect? -
Hi I did not see that last post last time I was here.
I have been advised by the production manager at the local tv station photos should be 1024 x 576 and the render should be MPEGII at 720×576. Audio should be 1 sec shorter than the visuals. This is in PAL.
I’ve tried this to render to DVD and it does come out in widescreen but definately not good quality, the tv display does not come close to what I have acheived on You Tube using the same pictures. You Tube seems to appreciate sharpened images while DVD and tv does not.
Here is an example of the sort of slideshows/vids I’ve been doing some amazing Humpback Whale pics here so you shouldn’t mind watching some. As a result of this sort of slideshow I have produced I’m now being asked to produce DVD and TV ads.
I cannot afford a camcorder at the present time and still studying my photography. Most video shot by others that I’m seeing is overexposed, too bright, solar flaring and when I take pics of the whales I underexpose by one stop to avoid solar flaring in the photos. After seeing others camcorder efforts it would seem that a camcorder would have to be able to underexpose to acheive the better quality as well.
Basically I have to make these vids frame by frame using the best pics I have or that the operators give me. I usually have to go get them myself.
Anaconda III
https://www.youtube.com/watch?v=o6YZNrEitWIBlue Dolphin
https://www.youtube.com/watch?v=qxBwpWldVQIWhalesong
https://www.youtube.com/watch?v=V4dCz1lRiJA
https://www.youtube.com/watch?v=Gz566-uK48k
https://www.youtube.com/watch?v=t0qtWcj8cv0
https://www.youtube.com/watch?v=t0qtWcj8cv0I realise that you guys are way beyond my humble skills and novices are a pain to you so thanks for replying at all.
https://www.ozmagic.homestead.com
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I have been advised by the production manager at the local tv station photos should be 1024 x 576
Yea, but he’s not taking into account that you are zooming into the images. You want the image to be at least 1048×576 when fully zoomed which means that you need to start out with a larger picture to maintain quality.
Also, PAL has a PAR of 1.4568 and 1.4568 x 720 = 1048.896 rounded to the nearest pixel is 1049 so a fully zoomed picture needs 1049×576 resolution. This is why we usually say to make the pictures 2x your output resolution or in your case 2098×1152 which will give you plenty of resolution to zoom 50% of the way into the picture and still have full resolution quality.
~jr
http://www.johnrofrano.com
http://www.vasst.com
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