Use a 2-second keyframe interval for a YouTube 24/7 stream. YouTube recommends a keyframe frequency of 2 seconds and says not to exceed 4 seconds. Its encoder guidance does not set a separate interval for continuous streams, so the same recommendation applies. YouTube’s live encoder settings
Set the interval to 2 seconds
If your encoder asks for an interval in seconds, enter 2. YouTube’s published guidance says, “Keyframe frequency: Recommended 2 seconds Do not exceed 4 seconds.” The 4-second figure is an upper limit, not the recommended target. YouTube’s page does not show a publication or revision date.
If your encoder asks for frames instead
Convert the two-second interval into frames by multiplying the frame rate by 2:
- At 30 fps, enter 60 frames.
- At 60 fps, enter 120 frames.
This is a unit conversion of YouTube’s two-second recommendation. It is not a separate YouTube setting. YouTube supports live frame rates up to 60 fps.
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Keep keyframes distinct from bitrate and other encoder settings
The keyframe interval controls how often the encoder inserts keyframes; it is not the video bitrate. YouTube’s guidance separately calls for constant bitrate (CBR) encoding and provides bitrate recommendations that depend on codec, resolution, and frame rate. It also lists RTMP or RTMPS as protocols and H.264, H.265/HEVC, and AV1 as supported codecs. Choose bitrate for your particular codec, resolution, and frame rate rather than deriving it from the keyframe interval. See YouTube’s encoder settings and bitrate guidance
Why consistency matters
Keep the interval consistent with the platform’s recommendation. OBS says a consistent keyframe interval within the recommended range helps viewers switch smoothly between quality options. That OBS guidance is dated June 9, 2021. OBS: Transcodes / Transcoding
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Test the stream and watch its health
Before relying on the setup for a continuous broadcast, test a stream that resembles the one you intend to run. YouTube says, “Make sure to test before you start your live stream.” During the event, monitor stream health and review any messages shown by YouTube; investigate warnings rather than assuming the keyframe interval is the only possible cause of a problem. YouTube encoder setup guidance
Do not substitute another platform’s interval guidance
Cloudflare’s troubleshooting documentation discusses a 2-to-8-second interval range for Cloudflare Stream, including trade-offs between broadcast-side bandwidth and latency. That is guidance for Cloudflare’s product, not YouTube, and should not override YouTube’s 2-second recommendation. Cloudflare says its page was last updated July 30, 2026. Cloudflare Stream troubleshooting
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