What could be causing my background video to only appear as a line in my column after uploading it on Webflow?

If your background video is only appearing as a line in your column after uploading it to Webflow, there are several potential reasons for this issue. Here are a few things you can consider checking to troubleshoot the problem:

1. Video Format and File Size: Ensure that your video is in a compatible format supported by Webflow, such as MP4, WebM, or Ogg. Additionally, check that the file size of your video is within the recommended limits (under 4GB).

2. Video Dimensions: Confirm that the dimensions of your video are suitable for the column where you're placing it. If the video is too wide or tall, it may get distorted or cut off, resulting in it appearing as a line instead of the full video.

3. Column Width and Padding: Check the width and padding settings of the column container. If the width of the column is too narrow or the padding is too large, it could be causing the video to be compressed and display as a line instead.

4. Z-index or Layering: Verify that the z-index or layering settings of the video element and its container are not conflicting with other elements on the page. Adjusting the z-index or layering order might help the video display correctly.

5. Browser Compatibility: Test the page in different browsers to see if the issue persists across all of them. Sometimes, browser-specific quirks or lack of support for certain video codecs can cause display problems.

6. Cache and Refresh: Clear your browser cache and refresh the page to ensure you're viewing the most recent version of your website. Cached versions might not display the updated video correctly.

7. File Upload and Linking: Double-check that you've correctly uploaded the video file to your Webflow project and linked it to the video element. Make sure the file path is accurate, and there are no typos or broken links.

8. Internet Connection: If you're previewing your site with a slow or unstable internet connection, it might affect how the video loads and displays. Ensure you have a stable connection to rule out any network-related issues.

By thoroughly investigating these factors, you should be able to identify and resolve the problem causing your background video to only appear as a line in your column on Webflow.