Calculator Inputs
Single column page flow is used, while the calculator form becomes 3 columns on large screens, 2 on smaller screens, and 1 on mobile.
Formula Used
1) Uncompressed video bitrate
Uncompressed bitrate = Width × Height × Frame rate × Bit depth × Chroma component factor
Component factors used here are 3.0 for 4:4:4, 2.0 for 4:2:2, 1.5 for 4:2:0, and 1.0 for 4:0:0.
2) Compressed video bitrate
Compressed video bitrate = Uncompressed bitrate ÷ Compression ratio
3) Transport and capacity estimate
Per stream rate = (Video bitrate + Audio bitrate) × (1 + Overhead)
Aggregate bitrate = Per stream rate × Concurrent streams × Redundancy factor
Recommended capacity = Aggregate bitrate × (1 + Safety margin)
4) Session transfer size
Session size = Recommended capacity × Duration ÷ 8 because eight bits equal one byte.
How to Use This Calculator
- Choose compressed mode for normal delivery planning or uncompressed mode for raw contribution and internal transport checks.
- Select a codec preset and keep the suggested compression ratio, or replace it with your own measured encoder ratio.
- Pick a preset resolution or enter custom width and height for nonstandard video formats.
- Enter frame rate, bit depth, and chroma sampling to reflect your actual signal quality.
- Add audio bitrate, transport overhead, concurrent streams, redundancy, and a safety margin.
- Set session duration to estimate event transfer size and storage impact.
- Click Estimate bandwidth to show results above the form, review the chart, and export CSV or PDF.
Example Data Table
| Scenario | Resolution | FPS | Bit depth | Chroma | Compression | Streams | Recommended capacity | Session size |
|---|---|---|---|---|---|---|---|---|
| 1080p Webinar | 1920 × 1080 | 30 | 8 | 4:2:0 | 120:1 | 1 | 7.885 Mbps | 3.548 GB |
| 4K Live Event | 3840 × 2160 | 60 | 10 | 4:2:0 | 160:1 | 2 | 151.113 Mbps | 68.001 GB |
| 720p Training | 1280 × 720 | 25 | 8 | 4:2:0 | 90:1 | 5 | 18.818 Mbps | 6.351 GB |
| 1080p Surveillance | 1920 × 1080 | 15 | 8 | 4:2:0 | 200:1 | 8 | 21.487 Mbps | 19.339 GB |
| 8K Contribution Feed | 7680 × 4320 | 30 | 10 | 4:2:0 | 250:1 | 1 | 99.320 Mbps | 22.347 GB |
These examples show how resolution, frame rate, compression, overhead, and concurrency affect final delivery requirements.
Frequently Asked Questions
1) What does this estimator calculate?
It estimates uncompressed bitrate, compressed video bitrate, per stream delivery rate, aggregate bandwidth, recommended capacity, and session transfer size for a chosen setup.
2) Why does chroma sampling matter?
Chroma sampling changes how much color information is carried. Lower chroma options reduce bitrate, while 4:4:4 preserves more color detail for premium quality workflows.
3) When should I use uncompressed mode?
Use uncompressed mode for raw transport, internal production links, lab planning, or any workflow where compression is not applied or should be ignored.
4) How do I choose a compression ratio?
Start with the codec preset, then adjust using real encoder measurements. Content motion, detail level, latency targets, and quality goals can change practical compression results.
5) What is protocol overhead?
Protocol overhead includes extra traffic from packet headers, transport wrappers, retransmissions, and stream packaging. Adding it makes the estimate more realistic for network planning.
6) Why add a safety margin?
A safety margin helps cover bitrate spikes, busy scenes, temporary inefficiencies, and unexpected traffic changes. It reduces the risk of underestimating real capacity needs.
7) Does audio matter much?
Audio is smaller than video in many cases, but it still affects throughput, especially when many streams run together or higher quality audio profiles are used.
8) Can I use this for storage planning too?
Yes. The calculator converts recommended delivery capacity and duration into session size, which helps estimate storage growth, archive space, and transfer budgets.