When you’re designing cover photos, graphics, and other social media assets, sometimes knowing the bare bones image dimensions isn’t enough. Here is everything you’ll need to know when creting images for your Youtube Channel.
Original Source: https://makeawebsitehub.com/social-media-image-sizes-cheat-sheet/
YouTube Image Sizes
Video uploads: 1280 px wide by 760 px tall
Channel cover photo: 2560 px wide by 1440 px tall