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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchFor most Twitch streams, start at 6,000 Kbps for 1080p30 or 720p60. On YouTube Live, start at 10,000 Kbps for 1080p30 or 12,000 Kbps for 1080p60. If your upload connection is unstable, use 720p30 at 3,000–4,000 Kbps instead.
The right setting depends on your platform, resolution, frame rate, codec, content motion, encoder and—most importantly—the lowest upload capacity your connection can sustain. A higher number is not automatically better.
Quick bitrate recommendations
These are practical starting points for H.264 video. They assume a stable connection and do not include audio or network overhead.
| Platform and target | Video bitrate | Stable upload target |
|---|---|---|
| Twitch 720p30 | 3,000–4,000 Kbps | About 5–6 Mbps |
| Twitch 720p60 | 4,500–6,000 Kbps | About 7–9 Mbps |
| Twitch 1080p30 | 5,000–6,000 Kbps | About 8–10 Mbps |
| Twitch 1080p60 | 6,000 Kbps where supported and stable | About 9–10 Mbps |
| YouTube Live 720p30 | 4,000 Kbps | About 6 Mbps |
| YouTube Live 720p60 | 6,000 Kbps | About 9 Mbps |
| YouTube Live 1080p30 | 10,000 Kbps | About 14–15 Mbps |
| YouTube Live 1080p60 | 12,000 Kbps | About 17–18 Mbps |
| YouTube Live 1440p60 | 24,000 Kbps | About 34–36 Mbps |
| YouTube Live 4K30 | 30,000 Kbps | About 42–45 Mbps |
| YouTube Live 4K60 | 35,000 Kbps | About 49–52 Mbps |
| Facebook Live 1080p30 | 3,000–6,000 Kbps | About 5–9 Mbps |
Upload figures include room for audio and delivery overhead. Twitch’s FAQ advises allowing approximately 30% more upload capacity than the configured stream bitrate; its example is a 6 Mbps stream requiring at least 8 Mbps upload (Twitch help).
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What bitrate actually measures
Bitrate is the amount of data sent every second, normally shown in Kbps or Mbps. In encoder settings, “video bitrate” applies only to the picture. Audio has its own bitrate, and the complete stream also carries protocol overhead.
- Video bitrate: data allocated to the moving picture.
- Audio bitrate: data allocated to voice, game sound and music.
- Total encoded stream: video plus audio before network overhead.
- Upload speed: the capacity available from your home to the platform.
- Viewer bitrate: the rendition a viewer receives after the platform processes your stream.
For example, 6,000 Kbps video plus 160 Kbps audio is about 6.16 Mbps before overhead. More bitrate can preserve detail, but it cannot repair a poor source, incorrect scaling, an overloaded encoder or an unstable route to the platform.
Choose a bitrate from your upload capacity
Advertised upload speed is a maximum, not a guarantee. Test at the time and location where you stream, then account for packet loss, Wi-Fi variation, other users, cloud backups, video calls and VPNs.
A conservative rule is to keep the complete stream at roughly 70–80% of the lowest stable upload capacity you observe. This is a practical safety margin, not a universal platform requirement.
- Stable 8 Mbps upload: target roughly 5,000–6,000 Kbps total stream bitrate.
- Stable 12 Mbps upload: target roughly 8,000–9,000 Kbps.
- Stable 20 Mbps upload: 12,000 Kbps is comfortable; 15,000 Kbps may work if it remains stable.
- A connection fluctuating between 6 and 10 Mbps: configure for the 6 Mbps floor, not the 10 Mbps peak.
Use a wired Ethernet connection when possible. A speed test such as Speedtest is useful for capacity and latency, but a sustained private stream is a better test of the complete path to a platform ingest server.
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Bitrate by resolution and frame rate
720p
720p is often the most reliable choice for limited upload bandwidth, entry-level hardware and fast games. Start around 2,500–4,000 Kbps at 30 fps or 4,000–6,000 Kbps at 60 fps. At a very low fixed bitrate, 720p30 can look cleaner than 720p60 because each frame receives more data.
1080p
1080p is useful for readable game interfaces, tutorials and facecam detail. A practical range is 6,000–10,000 Kbps at 30 fps and 8,000–12,000 Kbps at 60 fps, depending on platform and codec. Do not assume 1080p60 at 6,000 Kbps is ideal: rapid motion can still become soft or blocky.
1440p and 4K
These targets are generally better suited to YouTube Live or another service with explicit high-resolution support. YouTube’s current H.264 recommendations are 15 Mbps for 1440p30, 24 Mbps for 1440p60, 30 Mbps for 4K30 and 35 Mbps for 4K60 (YouTube encoder guidance).
Higher resolution raises upload, scaling and encoder demands. Viewers may not receive a higher-resolution rendition on every device or connection. YouTube also states that 4K streams are not available with its low-latency optimization, so 4K is a poor choice when interactive delay is more important than image size.
Twitch, YouTube Live and Facebook Live are different
Twitch
For an ordinary Twitch setup, 6,000 Kbps is a useful starting point; use less when your connection or audience devices need more headroom. It is not safe to describe 6,000 Kbps as an immutable platform-wide ceiling. Twitch’s Enhanced Broadcasting documentation describes multiple client-side encodes, dual-format streaming and 2K support in supported configurations. The documented workflow refers to OBS Studio 30.2 or newer, but availability depends on account, region, hardware, drivers, operating system and current Twitch support (Enhanced Broadcasting).
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Do not override a service’s normal settings unless the current Twitch interface confirms that your account and software support the mode.
YouTube Live
YouTube publishes a broad bitrate ladder and transcodes an incoming stream into multiple output formats. Its current guidance supports RTMP or RTMPS, H.264, H.265/HEVC or AV1, up to 60 fps, constant bitrate, two-second keyframes (no more than four seconds), and AAC or MP3 audio. The published stereo audio recommendation is 128 Kbps. Use the recommendation as a target only when your connection and hardware can sustain it.
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Facebook’s published video guidance lists 1080p at 30 fps, 3,000–6,000 Kbps video, a two-second keyframe interval, H.264 Level 4.1 and 128 Kbps stereo audio at 44.1 kHz (Facebook video-format guidance). Its streaming-software workflow uses a server URL and stream key, with RTMPS when supported (Facebook streaming-software setup). Account and regional interfaces can expose different requirements, so verify the values shown in your Live Producer screen.
Audio bitrate
Use 128 Kbps AAC stereo as a simple default. 160 Kbps is sensible for gaming and music-focused streams; 192 Kbps or more is worthwhile only when the platform and content justify it. YouTube lists 128 Kbps for stereo and 384 Kbps for 5.1 surround sound. Audio is small beside video, but it still counts toward upload demand.
OBS settings to pair with your bitrate
- Open OBS Studio and select Settings → Output → Streaming.
- Choose CBR when the platform requires or recommends constant bitrate.
- Enter the video bitrate in Kbps and set audio bitrate separately.
- Open Settings → Video. Set the base canvas to your source or game-capture resolution and the output scaled resolution to the stream target.
- Select 30 or 60 fps according to motion, available bitrate and hardware headroom.
- Set a two-second keyframe interval where the platform specifies it.
- Choose a hardware encoder—NVENC, AMD hardware encoding, Intel Quick Sync or Apple hardware encoding—when it provides acceptable quality while your computer runs a demanding game. Use x264 when CPU headroom is sufficient.
- Run an unlisted or private test and inspect OBS statistics before a public broadcast.
Encoder quality varies by generation, codec, preset, drivers and content. A stable hardware-encoded 720p stream is preferable to a stuttering 1080p stream.
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Content determines how much bitrate you need
High-motion video
First-person shooters, racing games, sports, particle effects, dense foliage and rapid camera movement stress compression. Raise bitrate when headroom exists; otherwise reduce resolution or frame rate.
Low-motion video
Talking heads, podcasts, interviews, presentations and static menus can look clean at lower rates. Thirty fps often gives better detail per bit than 60 fps when movement is limited.
Text and interface detail
Code, spreadsheets and small game HUD elements benefit from 1080p when bandwidth permits. Use a clean source resolution and avoid repeated scaling. If the content is mostly static, 30 fps can preserve text better than 60 fps at the same bitrate.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Diagnose the failure before changing settings
| Symptom | Likely cause | First fix |
|---|---|---|
| Dropped frames | Upload congestion, Wi-Fi, ISP instability or excessive bitrate | Reduce bitrate 10–20%, use Ethernet, stop other uploads and try another ingest server |
| Encoding lag | CPU/GPU overload or an overly demanding preset | Use a hardware encoder, easier preset, lower output resolution or cap the game frame rate |
| Rendering lag | OBS scene or game is consuming GPU time | Reduce game/scene load, close capture and browser sources, and run OBS with appropriate privileges |
| Pixelation | Insufficient bitrate for motion, 60 fps at too little data or a poor preset | Raise bitrate only with upload headroom; otherwise switch 60 to 30 fps or 1080p to 720p |
| Viewer buffering | Viewer connection, device, geography, latency mode or unavailable transcoding | Try a lower source bitrate and do not assume quality options are guaranteed |
In OBS, dropped frames generally indicate the network path; encoding lag indicates the encoder cannot keep up; rendering lag indicates OBS or the GPU cannot render the scene in time. Identify the rising counter before changing bitrate.
Codecs, latency and multistreaming
Codec choices
- H.264: broad compatibility and the safest default.
- HEVC/H.265: can be more efficient, but viewer and platform support is less universal.
- AV1: can improve quality per bit, but requires compatible hardware, software and platform ingestion.
- Hardware encoding: usually lowers CPU load, while quality depends on encoder generation.
- x264: mature and flexible, but CPU-intensive at demanding presets.
YouTube officially accepts H.264, H.265 and AV1. Twitch Enhanced Broadcasting may select among supported configurations automatically; it is not a guarantee that every account or device can use every codec.
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Latency
Higher bitrate does not inherently add latency, but a marginal connection has less room to absorb bursts. Lower-latency modes also leave less time for buffering and processing. Choose reliability first unless real-time audience interaction is central to the stream.
Multistreaming
With a relay such as Restream, your encoder uploads one stream and the service forwards it, minimizing local upload usage but adding a third-party dependency, plan limits and another failure point. Direct multistreaming sends separate outputs and can multiply upload and encoder load.
When combining Twitch and YouTube, do not blindly use YouTube’s 12,000 Kbps 1080p60 recommendation for a Twitch output. Use separate platform outputs when your workflow supports them, or select a compromise accepted by the relay and the weaker platform. Twitch’s multiple-encode features may reduce some separate workflows, subject to current software and hardware support (Twitch multiple encodes).
A practical decision guide
- Under 6 Mbps stable upload: 720p30 at 2,500–3,500 Kbps.
- Stable 8–10 Mbps: 720p60 or 1080p30 at 4,500–6,000 Kbps.
- Stable 15 Mbps: YouTube 1080p60 may be possible; Twitch commonly suits 1080p30 or 720p60.
- Stable 30 Mbps or more: consider YouTube 1440p, provided your encoder, scaling pipeline and viewers justify it.
Test privately, watch network and encoder statistics for several minutes, then adjust one variable at a time. If the stream is unstable, reduce bitrate first; if it is stable but blurry, decide whether resolution, frame rate, encoder quality or content complexity is the real constraint.
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