The best resolution and aspect ratio for YouTube Shorts videos are 9:16 and 1920 x 1080 pixels, Because YouTube Shorts are designed to be viewed on mobile devices. So, this is the best aspect ratio for YouTube Shorts but you can try other aspect ratio with higher resolutions such as 4K.

If you upload a video with a different resolution or aspect ratio, YouTube will automatically resize it to 9:16 aspect ratio. However, this may result in your video being cropped or zoomed.

What is the best resolution for YouTube Shorts videos?

• 720 wide x 1280 tall
• 1080 wide x 1920 tall
• Create Shorts with a 1:1 aspect ratio and dimensions of 1080 pixels by 1080 pixels. Those videos will look like perfect squares

How to create high-quality YouTube Shorts videos?

• Camera: Use a high quality camera, if not then you can use your mobile phone camera.
• Lighting: Natural light is good to shoot high quality picture, That makes your video perfect and attract viewers.
• Editing: Use a video editing software to make your video length 60 seconds or less, add any other changes you want.
• Hashtags: Adding the hashtag such as #shorts to your title and description. This will help to boosts your audience.

What i do best to grow my channel?

• Promote: Share your Shorts videos on social media and other platforms such as Facebook, Twitter. Also you can use there paid promotion services.
• Engage viewer: Make your videos quality more better like add text and graphics to make your videos more engaging.