How to upload a video with incorrect video resolution?

If you are trying to upload a video which is not 16:9 or 4:3 ratio you will get the below error:

Use this online tool to convert your video to 16:9 or 4:3. For videos that are 16:9 use width = 1280 and height = 720. For videos that are 4:3 use width = 1280 and height = 960.

For a video you wish to resize to 4:3 using the following settings:

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