H.264 File Size Calculator
Here’s a table summarizing the key aspects of H.264 file size, including factors that influence it, average sizes for different resolutions, and encoding settings.
| Aspect | Description |
|---|---|
| What is H.264? | H.264, also known as AVC (Advanced Video Coding), is a video compression standard widely used for video streaming, Blu-ray discs, and online video platforms. |
| File Size Factors | – Resolution: Higher resolutions result in larger file sizes. – Bitrate: Higher bitrates increase quality but also file size. – Frame Rate: Higher frame rates lead to larger files. – Duration: Longer videos result in larger file sizes. – Compression Settings: Settings like constant bitrate (CBR) vs. variable bitrate (VBR) affect size. – Content Complexity: More detail and motion in the video increase file size. |
| Average File Sizes | – 480p (SD): ~300 MB for 1 hour – 720p (HD): ~1.5 GB for 1 hour – 1080p (Full HD): ~3 GB for 1 hour – 1440p (2K): ~6 GB for 1 hour – 2160p (4K): ~12 GB for 1 hour |
| Typical Bitrates | – 480p: 500 kbps – 2 Mbps – 720p: 1.5 – 5 Mbps – 1080p: 5 – 12 Mbps – 1440p: 10 – 25 Mbps – 2160p: 25 – 50 Mbps |
| Encoding Settings | – Constant Bitrate (CBR): Maintains the same bitrate throughout the video; easier for streaming but less efficient. – Variable Bitrate (VBR): Adjusts the bitrate based on content complexity; more efficient for storage. – Profile Levels: Various profiles (e.g., Baseline, Main, High) offer different compression efficiencies and capabilities. |
| Usage Scenarios | – Streaming: Optimized for web delivery with lower bitrates. – Blu-ray: High-quality video with larger files. – Surveillance: Often uses lower resolutions and bitrates for storage efficiency. |
| Tools for Encoding | – FFmpeg: Open-source tool for video encoding and conversion. – HandBrake: User-friendly interface for encoding videos. – Adobe Media Encoder: Professional-grade video encoding software. |
This table provides a comprehensive overview of H.264 file size considerations, helping you understand how to manage and optimize video files effectively.