CHANNEL ARTIST IMAGE
A profile picture must be a minimum of 1000 x 1000 (maximum 5000 x 5000) pixels.
This must be a press photo of the artist of high resolution with no text.
Artist(s) should be centred in the picture to be within the safe area on mobile devicesand the background should not be pure white.
CHANNEL ART / YOUTUBE OAC BANNER
A banner image must be 2560 x 1440 pixels in order to fit all screen types, such as tablets, computers and TV's. If you wish to include text or a logo on the banner image, it must be in the centre and can only be a maximum size of 1546 x 423 pixels.
The video thumbnail should be a frame from your video, must be 1920 x 1080 pixels and cannot include any social media links, including logos.