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Yes. YouTube recommends a 2-second keyframe interval for live streams and says not to exceed 4 seconds. Set your encoder’s keyframe interval to 2 seconds—or use the equivalent number of frames for your frame rate.
What YouTube recommends
YouTube Help’s live encoder settings list a keyframe frequency of “Recommended 2 seconds Do not exceed 4 seconds.” This is the general setup recommendation; the page presents it alongside the supported encoder settings without limiting it to a particular codec.
The same guidance lists RTMP or RTMPS, H.264, H.265 (HEVC) or AV1 video, frame rates up to 60 fps, and constant bitrate (CBR) encoding. Its recommended advanced settings include progressive scan, 2 B-frames and 1 reference frame.
Convert two seconds to frames
If your encoder asks for a GOP size or keyframe interval in frames rather than seconds, multiply the frame rate by two:
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| Frame rate | Two-second interval |
|---|---|
| 30 fps | 60 frames |
| 60 fps | 120 frames |
For another frame rate, use the same calculation: frames per second × 2. YouTube’s keyframe-frequency troubleshooting guidance gives the 30 fps example as 60 frames.
Why a YouTube troubleshooting page also mentions four seconds
The troubleshooting page includes a four-second recommendation in a specific diagnostic about a GOP that is too small. That line is not a replacement for the general encoder-settings recommendation: use 2 seconds for setup, and do not exceed the stated 4-second maximum.
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YouTube also notes that ingestion errors can result in incorrect GOP sizes and that a closed GOP is required for optimal transcoding. If YouTube’s stream-health diagnostics report a GOP interval that differs from your encoder setting, check what the encoder is actually sending and review its GOP behavior; the value shown in the settings UI alone does not establish what reached YouTube.
Do you need a hardware encoder?
No. YouTube says encoder-based streams can use software applications or standalone hardware devices. The keyframe recommendation does not require buying hardware; an encoder capable of the setting can apply it. A dedicated hardware video encoder may be relevant to a more involved live-production setup, but it is optional for this setting.
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