Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to use youtube offline [title] Get a youtube music key subscription. [step] This is required in order to be able to download music videos from youtube for offline viewing. These are the only types of videos you can save for offline viewing using this method.

Ending1: [substeps] Music videos can only be played on a paid subscription platform. If you pay for your own music streaming service, you won't be able to download videos on this platform. Ending2: [substeps] Host a live video one time by selecting " video " from the options on the screen. During a live video keep the video focused from the center; if possible, refocus the video if it's paused, so the video gives you the full picture. Ending3: [substeps] There are a number of video key keywords available for offline viewing, but none offer significant results. Anything that you type in will be grouped and added to the key word file automatically. Ending4: If you want to save a different type of youtube video, use one of the following methods. [substeps] You'll get a youtube music key with a google play music all access subscriptions, which costs $10 usd per month.

Answer format: ending1/ending2/ending3/ending4