Video Bitrate Calculator
Video encoding & compression tool
Calculation Mode
Video Settings
Quality Assessment
Bitrate Distribution
File Composition
Recommended Bitrates by Resolution
Recommended video bitrates for different resolutions and codecs (SDR, 30fps)
| Resolution | H.264 | H.265 | VP9 | AV1 | Quality |
|---|---|---|---|---|---|
| 480p | 1.5 Mbps | 1.0 Mbps | 0.9 Mbps | 0.8 Mbps | Standard |
| 720p | 3.0 Mbps | 2.0 Mbps | 1.8 Mbps | 1.5 Mbps | HD |
| 1080p | 6.0 Mbps | 4.0 Mbps | 3.5 Mbps | 3.0 Mbps | Full HD |
| 1440p | 12.0 Mbps | 8.0 Mbps | 7.0 Mbps | 6.0 Mbps | 2K QHD |
| 2160p (4K) | 35.0 Mbps | 20.0 Mbps | 18.0 Mbps | 15.0 Mbps | 4K UHD |
| 4320p (8K) | 100.0 Mbps | 60.0 Mbps | 50.0 Mbps | 40.0 Mbps | 8K UHD |
Bitrate Tips
Higher Bitrate
Higher bitrate = better quality but larger file size. Use for archival or professional work
Lower Bitrate
Lower bitrate = smaller file but lower quality. Good for web streaming and mobile
Codec Efficiency
H.265/HEVC is ~50% more efficient than H.264. AV1 is ~30% better than H.265
Frame Rate
Higher frame rates (60fps) need ~50% more bitrate than 30fps for same quality
Video Codec Comparison
H.264 (AVC)
The most widely used video codec. Excellent compatibility with all devices and platforms.
- Pros: Universal compatibility, good quality, hardware acceleration everywhere
- Cons: Larger files than newer codecs, licensing fees
- Best for: General purpose, maximum compatibility
H.265 (HEVC)
Successor to H.264 with ~50% better compression at same quality.
- Pros: 50% smaller files than H.264, better quality at same bitrate
- Cons: Licensing issues, slower encoding, limited compatibility on older devices
- Best for: 4K video, high-quality streaming, archiving
VP9
Open-source codec developed by Google. Similar efficiency to H.265.
- Pros: Free and open-source, good compression, widely supported on web
- Cons: Slower encoding, limited hardware acceleration
- Best for: Web video (YouTube uses VP9), open-source projects
AV1
Newest open-source codec with ~30% better compression than H.265.
- Pros: Best compression, free and open-source, future-proof
- Cons: Very slow encoding, limited hardware support (improving)
- Best for: Future-proof archiving, high-quality streaming when hardware supports it
Codec Selection Guide
- Maximum compatibility: H.264
- Best quality/size ratio: AV1 (if hardware supports) or H.265
- Web streaming: VP9 or AV1
- Fast encoding: H.264 with fast preset
- Future-proof: AV1
Encoding Tips
2-Pass Encoding
Use 2-pass encoding for better quality at target bitrate. Takes longer but worth it
CRF Mode
Use CRF (Constant Rate Factor) instead of bitrate for consistent quality. CRF 18-23 is good
Hardware Encoding
Use NVENC (NVIDIA), QSV (Intel), or AMF (AMD) for faster encoding with good quality
Quality vs Size
Test different settings on short clips before encoding full video to find optimal balance
Understanding Video Bitrate
Video bitrate determines the amount of data used per second of video. Higher bitrate means better quality but larger file size. The right bitrate depends on your resolution, codec, and intended use case.
Bitrate Calculation Formula
The basic formulas for video calculations:
- Bitrate (Mbps) = (File Size in MB × 8) / (Duration in seconds) / 1000
- File Size (MB) = (Bitrate in Mbps × Duration in seconds × 1000) / 8
- Duration (seconds) = (File Size in MB × 8) / (Bitrate in Mbps × 1000)
Recommended Bitrates
General guidelines for video bitrates (H.264, 30fps):
- 480p (SD): 1.5 Mbps - Standard quality for mobile
- 720p (HD): 3.0 Mbps - Good for web streaming
- 1080p (Full HD): 6.0 Mbps - High quality for most uses
- 1440p (2K): 12.0 Mbps - Excellent quality
- 2160p (4K): 35.0 Mbps - Ultra HD quality
Codec Efficiency
Different codecs have different compression efficiency:
- H.264: Baseline - Most compatible
- H.265 (HEVC): ~50% more efficient than H.264
- VP9: Similar to H.265, open-source
- AV1: ~30% better than H.265, newest codec
Using This Calculator
Follow these steps:
- Step 1: Select calculation mode (Bitrate, File Size, or Duration)
- Step 2: Choose your video codec (H.264, H.265, VP9, or AV1)
- Step 3: Enter the known values (file size, duration, or bitrate)
- Step 4: Enter audio bitrate (typically 128-320 kbps)
- Step 5: Click "Calculate" to see the results
- Step 6: View quality assessment and recommendations
- Step 7: Check the Recommended tab for bitrate guidelines
- Step 8: Learn about codecs in the Codecs tab
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