Yes, you can publish a square (1:1 aspect ratio) video on YouTube, but there are some things to consider:
✅ Pros of Square Videos on YouTube
- Works well on mobile – Since many viewers watch YouTube on their phones, a square video can take up more screen space in portrait mode.
- Can stand out – Most YouTube videos are 16:9, so a square format might grab attention.
- Good for repurposed content – If you’re cross-posting from Instagram or Facebook, square videos save time.
❌ Cons of Square Videos on YouTube
- Black bars on the sides – On desktop and widescreen devices, YouTube will add black bars to fit the video inside the 16:9 player.
- Less optimal for widescreen viewing – Most YouTube content is optimized for landscape mode, so square videos may not look as immersive.
- Not ideal for long-form content – If you’re making long videos, 16:9 is better for storytelling and a natural viewing experience.
🔥 Best Use Cases for Square Videos on YouTube
- YouTube Shorts – While Shorts are usually vertical (9:16), square videos can still work well in this format.
- Social media-style content – Quick, engaging clips or repurposed videos from Instagram/TikTok.
- Experimental content – Trying new formats for engagement and analytics testing.
📌 Alternative: Consider 4:5 Aspect Ratio
If your goal is mobile optimization, the 4:5 aspect ratio (1080×1350 pixels) is a good middle ground. It takes up more space on mobile feeds without getting black bars on YouTube’s player.