Cannot remove green background of added clip to the existing video when the final video is exported.

[tim2017]

On my video timeline I posted an animation of a "Subscribe" clip that I found online. This animation by itself is on a green background but when I place this animation over my video, it blends with the existing video background and it's fine (green background disappears). However, when I go to Export and Save this video at 4K, the final video shows the little animation on the green background over my existing video. Is there a way to have this green background for my animation not show when I save the video? See attached screenshot. Please help. Thank you.

[Peru Bob]

[tim2017]

I posted the screenshot below like you requested.

[Peru Bob]

What are the export settings?

[tim2017]

Here are the export settings:

[tim2017]

[tim2017]

This is what happens with the final saved video.

[Peru Bob]

Please use the free MediaInfo and post a screenshot the properties of the "Subscribe" clip in tree view:
https://mediaarea.net/en/MediaInfo