obs bitrate calculator

Use this tool to estimate a safe, high-quality OBS bitrate for your stream based on platform limits, resolution, FPS, encoder, and upload speed.

Streaming Platform

Rate Control

Output Resolution

Frames Per Second

Encoder Efficiency

Keyframe Interval (seconds)

Upload Speed (Mbps)

Audio Bitrate (Kbps)

Upload Safety Margin (%)

Tip: 70% safety margin helps avoid dropped frames during upload speed fluctuations.

How to Choose the Best OBS Bitrate

Bitrate controls how much data your stream sends every second. Too low and your video looks blocky during motion. Too high and viewers buffer, or OBS drops frames if your internet cannot keep up. This OBS bitrate calculator gives you a practical target for real-world streaming conditions.

What “Bitrate” Means in OBS

Video Bitrate

Video bitrate (Kbps) is the largest quality lever in OBS. Fast-paced games need higher bitrate than a static webcam scene. Resolution and FPS dramatically change the amount of data required.

Audio Bitrate

Audio bitrate is usually smaller (128–192 Kbps for most streams), but it still uses part of your upload bandwidth. This calculator subtracts audio from your safe upload budget so your recommended video bitrate is realistic.

Recommended Starting Ranges

720p30: 2,500–4,000 Kbps
720p60: 3,500–5,000 Kbps
1080p30: 4,500–6,000 Kbps
1080p60: 6,000–9,000 Kbps
1440p30: 9,000–18,000 Kbps
1440p60: 16,000–24,000 Kbps
4K30: 20,000–40,000 Kbps
4K60: 35,000–51,000 Kbps

Platform limits still apply. For example, Twitch commonly limits regular ingest around 6,000 Kbps video, so 1080p60 may need compromise settings.

Platform Notes (Twitch, YouTube, Facebook, Kick)

Twitch Bitrate

Twitch is generally strict on bitrate and expects CBR with a 2-second keyframe interval. If your target quality exceeds the cap, try 936p/900p style settings, lower FPS, or improve encoder efficiency.

YouTube Bitrate

YouTube Live supports much higher bitrates, making 1440p and 4K streams more practical. Just ensure your upload speed is consistently high enough.

Facebook and Kick

These platforms can have tighter ingest constraints depending on account and region. Staying a little below the max usually improves stream stability.

CBR vs VBR in OBS

CBR keeps bitrate consistent and is the most compatible option for live streaming. VBR can improve quality efficiency but may be less predictable for bandwidth and compatibility. If you are unsure, use CBR and keep keyframe interval at 2 seconds.

Step-by-Step: Apply Results in OBS

Open Settings → Output.
Set Output Mode to Advanced (optional but useful).
Choose your encoder (x264, NVENC, AV1, etc.).
Set Rate Control (usually CBR).
Enter the calculated video bitrate.
Set audio bitrate from the calculator result.
Set keyframe interval to platform recommendation (usually 2).
Test with an unlisted/private stream and monitor dropped frames.

Troubleshooting Stream Quality

Pixelation During Motion

Increase bitrate if platform/upload allow it.
Drop FPS from 60 to 30 for more bits per frame.
Use a more efficient encoder preset where possible.

Dropped Frames in OBS

Lower bitrate by 10–20%.
Raise safety margin (for example from 70% to 65% usable budget equivalent).
Use wired Ethernet instead of Wi-Fi.

Blurry Text / UI

Try higher output resolution at lower FPS.
Use sharper scaling filters and avoid unnecessary rescaling.
Check that base canvas and output resolution are configured intentionally.

Final Tip

The best OBS bitrate is the highest value that stays stable for your platform and internet connection. Use the calculator as a starting point, then run short test broadcasts and adjust in small steps until quality and stability are both strong.