Get the right video + audio bitrate and file size per hour for OBS, Twitch, Kick, and YouTube — streaming or upload. Pick your resolution and frame rate. Free, no sign-up.
Dialing in your OBS bitrate gets a clean stream — but the growth is in the highlights. ClipSpeedAI turns your Twitch and Kick VODs into scored, captioned 9:16 shorts, then can post them to TikTok, Reels, Shorts, and X automatically. No manual editing.
Turn VODs Into Clips FreeTarget video bitrates for a finished upload. Higher survives YouTube's re-encode.
| Resolution | 30 fps | 60 fps | Recommended audio |
|---|---|---|---|
| 720p | 5 Mbps | 7.5 Mbps | 128–384 kbps |
| 1080p | 8 Mbps | 12 Mbps | 128–384 kbps |
| 1440p (2K) | 16 Mbps | 24 Mbps | 128–512 kbps |
| 2160p (4K) | 35–45 Mbps | 53–68 Mbps | 128–512 kbps |
Live streaming targets. Twitch non-partner ingest tops out around 6,000 kbps.
| Resolution / FPS | Twitch (non-partner) | Kick | Notes |
|---|---|---|---|
| 720p 30 | 3,000–4,000 kbps | 3,500–5,000 kbps | Easiest to sustain |
| 720p 60 | 4,500–6,000 kbps | 5,000–7,000 kbps | Great for gaming on limited upload |
| 1080p 30 | 4,500–6,000 kbps | 5,000–8,000 kbps | Good for IRL / talking |
| 1080p 60 | ~6,000 kbps (cap) | 6,000–8,000 kbps | Twitch practical ceiling |
| 1440p / 4K | Not recommended | Possible, high upload | Twitch won't transcode; viewers may buffer |
The ~6,000 kbps Twitch cap applies to non-partners. Use CBR, a 2-second keyframe interval, and keep total bitrate under ~70% of your tested upload speed.
Bitrate is how many bits per second your video uses to describe the picture and sound. More bits means more detail preserved — but it also means bigger files, more upload strain, and, for live streaming, a hard ceiling set by the platform. This calculator takes your resolution, frame rate, use case, and motion level and returns a recommended video bitrate, an audio bitrate, the total, and the estimated file size per hour of recording. It uses published platform guidance — YouTube's recommended upload bitrates and Twitch's ingest limits — rather than guesswork.
These are two different jobs and the numbers are very different. A stream bitrate has to travel live over your internet connection in real time, so it is limited by your upload speed and by the platform's ingest cap — about 6,000 kbps on Twitch for non-partners. An upload bitrate is the bitrate of a finished file you upload after recording, and there is no live cap. YouTube recommends much higher upload bitrates (around 12 Mbps for 1080p60, up to 68 Mbps for 4K60) precisely because the platform re-encodes everything you upload, and a richer source file survives that compression with more detail intact. The rule of thumb: stream conservatively so you stay stable, but record and export at a higher bitrate for the best archived quality.
Doubling your frame rate from 30 to 60 roughly doubles how much new information the encoder has to store each second, so 60fps needs meaningfully more bitrate than 30fps at the same resolution. Motion works the same way. A static talking-head or slideshow barely changes frame to frame, so the encoder can be efficient and lower bitrate looks fine. Fast-motion content — competitive gaming, sports, particle effects, camera pans — changes almost every pixel every frame, and starving it of bitrate produces blocky, smeary artifacts exactly when the action is most important. That is why this tool adds roughly 25% for high-motion content, and why gaming streamers push to the top of every range.
Twitch limits non-partner ingest to around 6,000 kbps to keep streams stable and cheap to distribute. Crucially, transcoding — the feature that serves lower-quality options to viewers on slow connections — is only reliably available to partners and some affiliates. So pushing a very high bitrate from a regular account can actually hurt: viewers who cannot download your full stream get buffering instead of a lower-quality fallback. For most Twitch streamers, 1080p60 at 6,000 kbps (or 720p60 at ~4,500-6,000 kbps on a weaker connection) is the sweet spot. Kick and YouTube Live are more lenient and accept higher bitrates, which is why the same stream can look better there.
Audio is a small slice of the total but it still counts. Live platforms usually cap audio around 128-160 kbps; for a finished upload you can go higher (256-320 kbps) for cleaner music and voice. File size follows directly from total bitrate: size per hour equals total bitrate multiplied by 3,600 seconds, divided by 8 to convert bits to bytes. At 1080p60 upload quality you are looking at several gigabytes per hour, which matters if you record long sessions or have limited disk space. This calculator shows that number so you can plan storage before you hit record.
For streaming to Twitch or Kick at 1080p 60fps, aim for around 6,000 kbps video — that is the practical ceiling for non-partner Twitch ingest and a solid target for fast-motion gaming. For a YouTube upload at 1080p 60fps, YouTube recommends roughly 12,000 kbps (12 Mbps) video, because uploads are re-encoded and a higher source bitrate survives that compression. Add 128-256 kbps of audio on top. High-motion content like gaming benefits from the top of these ranges; talking-head or IRL content can go lower.
For most streamers, 1080p 60fps at 6,000 kbps is the best OBS bitrate for Twitch — it is the highest bitrate Twitch reliably accepts for non-partners and gives clean quality for gaming. If your upload connection is unstable, drop to 720p 60fps at roughly 4,500-6,000 kbps, which holds sharpness on fast action while staying easier to sustain. Keep keyframe interval at 2 seconds and use a CBR (constant bitrate) rate control, which Twitch requires.
Up to a point. Higher bitrate stores more detail per frame, so fast-motion and high-resolution content looks noticeably better with more bits. But returns diminish, and past a certain point extra bitrate adds file size and upload strain without visible improvement — especially for low-motion content like a webcam or slideshow. Bitrate also has to fit your upload speed and the platform's cap: a stream at 9,000 kbps looks worse than one at 6,000 if it constantly drops frames. Match the bitrate to your resolution, frame rate, motion, and connection, not just the biggest number.
Twitch limits non-partner ingest to roughly 6,000 kbps to keep streams stable and affordable to distribute. Only Twitch partners and some affiliates reliably get transcoding (the feature that serves lower-quality options to viewers on slow connections), so higher bitrates from a regular account can actually hurt viewers who cannot download the full stream. Kick and YouTube Live are more lenient and accept higher bitrates, which is why the same 1080p 60fps stream can use more bits there.
Stream bitrate is what you send live to a platform in real time, so it is limited by your upload speed and the platform's ingest cap (about 6,000 kbps on Twitch). Upload bitrate is the bitrate of a finished video file you upload after recording — there is no live cap, so YouTube recommends much higher values (for example ~12 Mbps at 1080p60) because the platform re-encodes your file and a richer source preserves quality through that compression. In short: stream low enough to be stable live, but record and upload at a higher bitrate for the best archived quality.
Every hour you stream is a goldmine of clip-worthy moments. ClipSpeedAI scans your Twitch and Kick VODs, scores the best moments, adds captions, reframes to 9:16, and schedules them across platforms — so the highlights work for you while you sleep. No editing, no signup to try.
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