To delete a Xzero Media video, go to the Video Studio then click on the Trash icon and confirm that you want to delete the video.

To change the thumbnail for your Xzero Media video, go to the Video Studio and click on the Edit icon (pencil) next to the video you want to modify. From there, you can select a new thumbnail from the available options or upload a custom thumbnail from your computer.

To upload a video to Xzero Media, first sign in to your Xzero Media account. Then, click on the 'Upload' button in the top right corner of the page. From there, you can choose a video file from your computer to upload.