Calculator inputs
Example data table
| Use Case | Resolution | FPS | Codec | Preset | Duration | Estimated Total Bitrate | Estimated File Size |
|---|---|---|---|---|---|---|---|
| Webinar archive | 1280 × 720 | 30 | H.264 / AVC | Standard | 15 min | 3.69 Mbps | 0.41 GB |
| YouTube delivery | 1920 × 1080 | 30 | H.264 / AVC | Standard | 10 min | 8.19 Mbps | 0.61 GB |
| Sports edit master | 2560 × 1440 | 60 | H.265 / HEVC | High | 20 min | 22.36 Mbps | 3.35 GB |
| 4K streaming copy | 3840 × 2160 | 30 | AV1 | Standard | 30 min | 15.96 Mbps | 3.59 GB |
Formula used
This tool estimates a practical target bitrate using a scaled reference model. The baseline assumes 1080p, 30 fps, medium motion, standard quality, 8-bit, 4:2:0 video at 8 Mbps.
Video Bitrate (Mbps) = 8 × Resolution Factor × FPS Factor × Codec Multiplier × Quality Multiplier × Motion Multiplier × Bit Depth Multiplier × Chroma Multiplier Resolution Factor = (Width × Height) ÷ (1920 × 1080) FPS Factor = Frame Rate ÷ 30 Total Bitrate (Mbps) = Video Bitrate + (Audio Bitrate × Audio Tracks ÷ 1000) Estimated File Size (MB) = Total Bitrate × Duration Seconds ÷ 8 Raw Bitrate (Mbps) = Width × Height × FPS × Bit Depth × Raw Sampling Factor ÷ 1,000,000 Compression Ratio = Raw Bitrate ÷ Video BitrateThese values are planning estimates. Actual encoder behavior, scene changes, grain, subtitles, GOP structure, variable bitrate limits, and platform recommendations can shift final outputs.
How to use this calculator
- Select a resolution preset or choose custom.
- Enter frame rate and video duration in minutes.
- Pick the codec that matches your workflow.
- Choose quality, motion level, bit depth, and chroma format.
- Add audio bitrate, number of audio tracks, and available upload speed.
- Press Calculate bitrate to show the result above the form.
- Review bitrate, file size, compression ratio, and bandwidth headroom.
- Use the chart and scenario table to compare quality presets.
- Download the report as CSV or PDF for documentation.
Frequently asked questions
1) What does video bitrate mean?
Video bitrate is the amount of data used each second to encode video. Higher bitrates often improve quality, but they also increase file size, storage needs, and upload bandwidth requirements.
2) Why does codec choice matter?
Different codecs compress video with different efficiency. Newer codecs like AV1 and H.265 usually reach similar visual quality at lower bitrates than H.264, while editing codecs may require much higher data rates.
3) Does frame rate affect bitrate?
Yes. More frames per second means more image information must be stored or transmitted. A jump from 30 fps to 60 fps often needs a noticeable bitrate increase to maintain similar visual quality.
4) What is chroma sampling?
Chroma sampling controls how much color detail is preserved. 4:2:0 is common for delivery, 4:2:2 is stronger for production, and 4:4:4 retains the most color information at much higher data rates.
5) Why estimate raw bitrate too?
Raw bitrate shows how much data uncompressed video would require. Comparing raw and compressed values helps you understand encoder efficiency, storage savings, and how aggressive the chosen compression settings really are.
6) Can this tool predict exact final export size?
Not exactly. It is a strong planning tool, but final size can change with variable bitrate behavior, content complexity, encoder tuning, audio format, and platform-specific export constraints.
7) What is stable upload needed?
Stable upload needed adds a safety margin above total bitrate. This helps avoid congestion, dropped frames, or stalled transfers during streaming, remote delivery, or cloud uploads.
8) Which preset should I choose?
Use low for drafts, standard for common delivery, high for premium output, and archive for near-master copies. The best choice depends on audience, platform rules, storage limits, and edit flexibility.