The UploadVideo method is a static extension method provided by the SandboxToolExtensions class. It allows you to upload a video file to a specified asset in the Sandbox environment. This method is asynchronous and returns a Task<bool> indicating the success or failure of the upload operation.

To use the UploadVideo method, you need to provide the following parameters:

• asset: An instance of Editor.Asset representing the asset to which the video will be uploaded.
• contents: A byte array (byte[]) containing the video data to be uploaded.
• isThumbVideo: A boolean value indicating whether the video is a thumbnail video.
• hidden: A boolean value indicating whether the video should be hidden after upload.
• tag: A string representing a tag to associate with the video.
• progress: A callback of type Sandbox.Utility.DataProgress.Callback to report the progress of the upload.
• token: A CancellationToken to observe while waiting for the task to complete.

Example usage:

var asset = new Editor.Asset();
byte[] videoData = File.ReadAllBytes("path/to/video.mp4");
bool isThumbnail = false;
bool shouldHide = false;
string videoTag = "exampleTag";
var progressCallback = new Sandbox.Utility.DataProgress.Callback((progress) => {
    // Handle progress update
});
var cancellationToken = new CancellationToken();

bool success = await SandboxToolExtensions.UploadVideo(asset, videoData, isThumbnail, shouldHide, videoTag, progressCallback, cancellationToken);
if (success)
{
    // Video uploaded successfully
}
else
{
    // Handle upload failure
}