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YouTube Live Stream Bitrate for 4K 30fps Prerecorded Videos

For 4K 30fps YouTube Live, use 42 Mbps for H.264 or 30 Mbps for HEVC/AV1. Learn the key encoder settings and how much upload headroom to plan.
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For a prerecorded video sent through a live encoder to YouTube at 4K/2160p and 30 fps, YouTube recommends 42 Mbps for H.264 or 30 Mbps for H.265/HEVC or AV1. The listed minimums are 11 Mbps for H.264 and 8 Mbps for HEVC or AV1. These are live-ingest recommendations; a normal video upload uses a different bitrate guideline.

Choose the bitrate for your live encoder codec

The right target depends on the codec your live encoder sends to YouTube—not just the codec used in the original video file. YouTube Help’s live encoder settings, accessed in 2026, list these figures for 4K/2160p at 30 fps:

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Live ingest codec Recommended bitrate Listed minimum
H.264 42 Mbps 11 Mbps
H.265/HEVC 30 Mbps 8 Mbps
AV1 30 Mbps 8 Mbps

For the broadly supported H.264 workflow, set video bitrate to 42 Mbps if your connection can sustain it. If your encoder and YouTube ingest route support HEVC or AV1, YouTube’s table recommends 30 Mbps for either. The table does not establish that one codec will look better in every setup. Use the row that matches the codec actually being ingested.

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These are YouTube’s platform recommendations, not universal encoding laws or guarantees of identical picture quality. The live encoder settings page does not state a publication year.

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Do not confuse live ingest with a regular upload

If you upload a finished 4K video as a regular YouTube video, rather than sending it through a live encoder, YouTube’s separate recommended upload settings specify 35–45 Mbps for 2160p at 24, 25, or 30 fps. That is an upload recommendation, not the live-ingest target. Identify the workflow before choosing a bitrate.

Set the other encoder options

  • Rate control: Use constant bitrate (CBR), as YouTube recommends for live streaming.
  • Keyframes: Set a 2-second interval. YouTube says not to exceed 4 seconds.
  • Protocol: YouTube lists RTMP and RTMPS; it recommends RTMPS, the secure extension to RTMP.
  • Frame rate: The listed guidance supports up to 60 fps. This recommendation is specifically for 30 fps.
  • Color and bit depth: For SDR, YouTube lists Rec. 709 and 8-bit. Its described HDR settings use H.265/HEVC and 10-bit; AV1 is not supported for HDR in those settings.

For HDR, verify that the chosen encoder, codec and ingest configuration match YouTube’s HDR requirements. Do not infer the live codec from the source file: the relevant bitrate is for the codec sent to YouTube.

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Allow enough upload bandwidth

Your internet plan’s advertised download speed does not establish whether you can sustain a live stream. You need reliable outbound upload capacity, with room for variation and other network activity. YouTube recommends 20% headroom above the total stream bitrate and warns that the total stream bitrate cannot exceed available upload bandwidth.

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For example, 20% above a 42 Mbps video setting is approximately 50.4 Mbps. That is arithmetic based on YouTube’s headroom recommendation, not a separate YouTube-published speed threshold; it also excludes audio, other network use and connection fluctuations. Treat it as a planning baseline, not proof that a connection will be stable.

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Test before going live

  1. Run an upload speed test on the connection you will use for the stream.
  2. Configure the encoder for the intended codec, 4K/2160p, 30 fps, CBR and a 2-second keyframe interval.
  3. Test before the event with audio and movement similar to the actual video. A static test image may not reveal the same encoding or network behavior.
  4. Check YouTube’s stream health while testing and during the event. If the connection cannot sustain the target, address network capacity or choose a supported lower setting rather than assuming advertised speed is sufficient.

Know the 4K latency limitation

Under YouTube’s documented settings, 4K/2160 streams use normal latency: the option to optimize for low latency is unavailable. If low latency is essential, account for this limitation before choosing a 4K live workflow.

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