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Rendered video - thin diagonal lines in green screened area


Bax Burgess

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Hi all. User of the paid 11.18, using Mac OS 11.6.3

Everything looks good when editing, the black background 100% black, surrounding an isolated figure. In the rendered video, several thin diagonal lines cross the background area, the area edited out with green screen.

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  • borate changed the title to Rendered video - thin diagonal lines in green screened area
  • 2 weeks later...

I have the same problem since the update recently.  Renders with a diagonal green line from top left to bottom right.  Sometimes extra lines of white and pink flash on and off too.  I'm not using a green screen effect, but some of my pictures are vertical, and the black in the background on the left and right has these lines.

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Is this the MAC version or Windows?  What release?  Look at the bottom-left of the window.

Share your project.  Someone will take a look and come up with a fix.  The process is easy, quick and can be done privately.  Just follow these steps...

  •     Back up --- With your project on the timeline, click on MENU at the top-left.  Click FILE|BACK UP PROJECT FILES TO FOLDER.  Choose a folder and SELECT FOLDER.
  •     Upload ---  Use a free server - Google Drive, MS OneDrive, etc.* - to upload the saved, numbered FOLDER.    Do NOT upload the individual VPJ or export file. 
  •     Get link --- Get a public link.  If using Google Drive click GET SHAREABLE LINK. If necessary change "restricted" to "anyone with the link can view" 
  •     Share ---     Click COPY LINK | DONE.  Paste that link here, or click the folder at the top-right of this forum to message it privately to me.  It won't be shared.

          *    Before uploading, right-click the folder, click PROPERTIES.  Look at the File Size to confirm that it's not too big for the free space on the server.

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I made a quickie project with the same issues.  Yes it is a Mac.  Videopad Professional version 11.18.  Here is the link to the folder.

https://drive.google.com/drive/folders/1f1cUURIJOUuHnUgejLIQO1h2LI6kkjeF?usp=sharing

Again, it looks great in the preview section, but once I export it, mp4 mov and avi all show the same issue.

I did try messing with the green screen settings, and I continue to have the same trouble.  Still messing with it (kind of like an animal bashing buttons not knowing which one does what 🙂 ) ha

Thank you for watching the forum and extending some aid, it is very much appreciated.

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Clean as a banana in Windows, whether exported mp4 or AVI over no background or a blank on a lower track.

Considering this thread, a possible MAC issue.  Be sure that the video driver is up to date...

AMD / ATI users: http://support.amd.com/us/gpudownload/Pages/index.aspx
Intel users: https://downloadcenter.intel.com/default.aspx
nVidia users: http://www.nvidia.com/Download/index.aspx?lang=en-us

Try this release.  If the issue goes away, then the 11.18 version is at fault.

In any case, report your findings to NCH...    https://www.nch.com.au/software/bug.html?software=VideoPad

The cupcake doesn't have a transparent background.  The GIF doesn't animate in VP - some, like this one, do...4EAw.gif

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I appreciate your help.  The Mac says it is up to date with the software. I'm running catalina 10.15.7. I downloaded the previous version of videoPad to see if it is the latest update that is doing it.  Same problem.  This is what it looks like.

https://www.youtube.com/watch?v=Hkd7uLk9nnY

I'm sorry you guys don't have MAC to check with.  Seems I'm not the only one with this issue.  I think I was running a version 10 before this.  Kept crashing so I found an update and that is when the problem started.  I guess if thats the best we can do at this point, I have no further questions.  Just frustration.  I'll post where you told me to.  Thanks for the info.

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3 hours ago, borate said:

Try adding a blank, black background on a lower track.

Thank you again for trying to help.  I don't understand how to add a blank background.  I have to add SOME form of image in order to create a video on the Video 1 area.  I did consider taking a screenshot of a black screen and fitting it perfectly to the background as a band aid.  I think this is what you suggest yes?

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