Select (or Photos on iOS), choose the downloaded video, and hit send. Method 2: Using Mobile Apps (Android & iOS)
To share a YouTube video on WhatsApp, you can either send it as a direct link or convert and send it as a media file. Method 1: Share as a Direct Link (Easiest)
Navigate to the video you want to share and tap , then select Copy Link . Open WhatsApp and open the chat of the recipient.