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Start with the full warning and your stream protocol
In YouTube Live Control Room, read the complete warning and any stream-health details. Note the named issue—such as stream format or bitrate—before changing the encoder. The general encoder recommendations apply to RTMP/RTMPS; HLS has its own ingestion requirements. YouTube recommends RTMPS in its general encoder guidance, but use the protocol and URL configured for your stream.
- RTMP/RTMPS: Compare the warning with YouTube’s encoder settings guidance.
- HLS: Check the HLS-specific requirements in YouTube’s HLS setup guide; don’t assume the RTMP/RTMPS checklist is sufficient.
The warning’s exact wording matters. YouTube’s Live streaming error guide identifies different possible format problems, including an unsupported container, audio codec, video codec or video codec profile. The title’s wording alone does not establish which one is affecting your stream.
Fix the setting named by the error
If YouTube reports an incorrect stream format
For the specific “Incorrect stream format” error, YouTube’s remedy is H.264 video and AAC audio. Check the encoder’s actual output codec, not just the name of its preset. Also verify the container and video profile, since YouTube lists those among possible format-related problems.
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Context matters: YouTube’s general RTMP/RTMPS settings page lists H.264, H.265 (HEVC) and AV1 as supported video codecs, and AAC or MP3 for audio. That broader list is not a reason to ignore a specific error’s instruction. Match your change to both the protocol and the full warning.
If YouTube reports a bitrate or resolution problem
Check the bitrate for the selected video codec, ingestion resolution and frame rate. YouTube’s figures are recommended ranges, not one mandatory bitrate for every stream. These examples show how the recommendation varies:
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| Ingestion resolution and frame rate | AV1 or H.265 recommended bitrate | H.264 recommended bitrate |
|---|---|---|
| 1080p at 60 fps | 12 Mbps | 17 Mbps |
| 1080p at 30 fps | 10 Mbps | 14 Mbps |
| 720p at 60 fps | 6 Mbps | 8 Mbps |
| 720p at 30 fps | 6 Mbps | 8 Mbps |
These are YouTube Help recommendations; consult its current bitrate table for your exact codec, resolution and frame rate, including other modes. If your available upload bandwidth cannot sustain the selected resolution, YouTube advises lowering the resolution. If you are not using a variable-resolution entrypoint, the bitrate must match the exact rate selected on Live Control Room’s Ingestion Settings page.
If the stream is otherwise configured but still rejected
For RTMP/RTMPS, check the keyframe interval and encoding mode. YouTube recommends a two-second keyframe interval, says not to exceed four seconds, and specifies constant bitrate (CBR). Confirm the encoder is outputting the setting you selected rather than relying on a preset label.
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Check the rest of the RTMP/RTMPS output
When the error points to format or the stream still fails after the named issue is corrected, compare the outgoing signal with YouTube’s general settings. Its guidance lists up to 60 fps, square pixels, progressive scan, two B-frames, one reference frame, CABAC, Rec. 709 for SDR, 8-bit SDR and 10-bit HDR as recommended settings.
| Signal component | YouTube guidance to verify |
|---|---|
| Video codec | H.264, H.265 (HEVC) or AV1 for RTMP/RTMPS; check the specific error if one is shown. |
| Frame rate | Up to 60 fps; pair the chosen rate with the corresponding bitrate recommendation. |
| Keyframes and bitrate mode | Two-second keyframe interval recommended, no more than four seconds; CBR. |
| Audio codec | AAC or MP3 in the general RTMP/RTMPS guidance. 5.1 surround over RTMP/RTMPS is supported only for AAC. |
| Stereo audio | 44.1 kHz and 128 Kbps. |
| 5.1 surround audio | 48 kHz and 384 Kbps. |
| SDR/HDR color | Rec. 709 and 8-bit for SDR; HDR requires its own compatible setup, including 10-bit video. |
For full-resolution, codec-specific bitrate recommendations and additional encoder details, use YouTube’s live encoder settings page. Don’t infer a bitrate for an unlisted combination from the examples above.
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Handle HLS and HDR as separate workflows
HLS
For HLS, create a stream key with HLS selected and use the HTTPS ingestion URL shown in Live Control Room. YouTube requires TS segments lasting 1–4 seconds, a rolling playlist with no more than five outstanding segments, and HTTPS POST/PUT. Byte range and encryption other than HTTPS are not supported. Ultra-low latency is off for HLS, which has higher latency than RTMP because video is sent in segments. See the complete HLS setup requirements.
HDR
HDR needs compatible color characteristics, HEVC and 10-bit video; ordinary SDR settings are not a substitute. YouTube’s OBS instructions specify OBS version 30.1 or later and additional setup. For the HDR/HLS workflow, YouTube says to select HLS and leave manual resolution off. Follow the instructions for your encoder and protocol in YouTube’s HDR streaming guide rather than applying a generic SDR fix.
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Retest after each change
- Change the setting implicated by the warning first. If the message names format, correct the relevant codec, container or profile; if it names bitrate, match the codec, resolution and frame rate.
- Start a preflight test using representative audio and movement, not just a static or silent signal.
- Watch Live Control Room’s stream health and messages while the encoder is running. If the warning remains, use the newest full error details to choose the next check.
YouTube recommends testing before the event and monitoring stream health during it. A warning that persists after one adjustment calls for further diagnosis; it does not prove that the encoder itself must be replaced.
Troubleshooting by symptom
| Symptom or message | What to check | Next action |
|---|---|---|
| “Incorrect stream format” | Container, video codec, video profile and audio codec. | For this specific error, use H.264 video and AAC audio, then retest. |
| Bitrate warning or unstable stream health | Codec, ingestion resolution, frame rate, configured bitrate and available upload bandwidth. | Use the matching YouTube recommendation; lower resolution if upload bandwidth cannot sustain it. Check the Ingestion Settings rate if not using a variable-resolution entrypoint. |
| RTMP/RTMPS stream rejected despite matching codec | CBR mode and keyframe interval. | Set CBR and a two-second interval, without exceeding four seconds. |
| HLS stream rejected | HLS-selected stream key, HTTPS URL, TS segment duration, rolling playlist and HTTPS methods. | Compare every HLS-specific setting with YouTube’s HLS guide; RTMP/RTMPS settings alone do not cover this workflow. |
| HDR signal fails or looks wrong | HEVC, 10-bit video, compatible color characteristics and protocol-specific HDR setup. | Use YouTube’s HDR instructions for the encoder in use; for HDR/HLS, select HLS and leave manual resolution off. |
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