You can post videos with a maximum resolution of 1920 pixels to Instagram. It’s entirely worthless to try to upload 4k videos with a high bitrate to the platform. Since Instagram does not support 4K videos, the result of uploading one is a pixelated, cropped video with distorted sound. A minute of 4K at 60 frames per second will occupy around 400MB. If you create a 60-minute high FPS 4K video with your smartphone, you’ll end up with more than 20 Gigabytes, which is way more than what the platform can support. To conclude, your 4K videos will suffer a significant quality loss due to Instagram’s compression algorithm.