I couldn't find a tutorial online, or at least easily, so once I pieced it together myself I decided to make this.
Step 1: Upload Your Video to Google Drive.
In the top left, under the Drive triangle, click New>File Upload and choose your video. Depending on the length and file size, this could take a few minutes.
Step 2: Let It "Download".
Even after it says that it's done uploading in the bottom right, the video still needs to download from the server. This will take another few minutes.
Step 3: The Code.
It's a very simple code you copy and paste into Wordpress. Here's the format:
[googleapps domain="drive" dir="file/d/we will get this in the next step/preview" query="" width="640" height="480" /]
Include the brackets and all quotations.
Step 4: Get the 'dir'.
The only part you need to add is the 'dir' location. Once your video has finished downloading to Google Drive, click on it, then click the three dots in the top right and click "share". There will be a link to copy and paste. For example:
The only part we want is the part after ?id=. In this case, it's 1kFcofP03VrxSPBaiQVDpSJn8B1SNlVUP. Paste that into the code I had in the step before.
Step 5: Insert the 'dir'.
You're done! Your code should work.
Here's an example of a working code.
[googleapps domain="drive" dir="file/d/1kFcofP03VrxSPBaiQVDpSJn8B1SNlVUP/preview" query="" width="640" height="480" /]