What is Video Bitrate?
Video Bitrate refers to the amount of video data processed per second, typically measured in Megabits per second (Mbps) or Kilobits per second (kbps). Bitrate is the single most important factor determining output image quality.
The Relationship Between Resolution and Bitrate
A common misconception is that higher resolution (e.g., 4K vs 1080p) automatically means better quality. However, a 1080p video encoded at a high 15 Mbps bitrate will look significantly sharper and cleaner than a heavily compressed 4K video choked at 2 Mbps bitrate!
Recommended Video Bitrates for Web Uploads (H.264)
- 1080p at 30fps: 8 Mbps to 10 Mbps
- 1080p at 60fps: 12 Mbps to 15 Mbps
- 4K at 30fps: 35 Mbps to 45 Mbps
- 4K at 60fps: 55 Mbps to 65 Mbps
CBR vs VBR Bitrate Modes
CBR (Constant Bitrate) maintains fixed data throughput throughout the entire file, ideal for live streaming. VBR (Variable Bitrate) intelligently shifts bandwidth to complex action scenes while saving data during simple frames, perfect for web video files!
