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YouTube’s “under 12 hours” rule is about automatic archiving, not a documented 12-hour maximum broadcast or automatic disconnect. If your 24/7 stream stops when an RTMP output timer expires, first check whether that timer belongs to your encoder, a relay, or a scheduled event; then verify the YouTube destination, stream key, connection protocol, and stream-health status.
Does YouTube disconnect a 24/7 stream after 12 hours?
The reviewed YouTube documentation does not establish a general RTMP session-duration cap that automatically disconnects a continuous stream. YouTube Help says, “All streams under 12 hours will be automatically archived.” That is an archive rule, not a stated maximum broadcast duration or a promise that streams end at 12 hours. YouTube’s encoder setup guide is the relevant reference.
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So, if an encoder says its RTMP output has reached a time limit, do not assume YouTube imposed that limit. The message may refer to a setting or session limit in the encoder, a third-party relay, a scheduled event, or another part of the setup. Without the product name, exact error, and logs, the specific cause cannot be identified.
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Trace which part of the setup stopped the stream
Use the elapsed time and the messages from both ends to locate the failure point. YouTube’s Live API exposes stream status and health information, but its examples are not a universal error-to-fix guide. YouTube LiveStreams API reference
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- 【Hardware H.265/H.264 Encoding at 1080P60】Dedicated hardware encoder delivers broadcast-quality 1080P60 streams with H.265/H.264 compression. Reduces bandwidth usage by up to 50% compared to legacy H.264-only solutions, while maintaining crisp, crystal-clear video output.
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- Record the elapsed time. Note when the stream started and when output stopped. If it repeatedly ends at the same elapsed time, record that pattern; it helps distinguish a configured timer from a less predictable connection issue.
- Save the encoder log and exact error. Keep the full message, not just “time limit,” and note the encoder or relay name and version. Check whether the timer is configured on the encoder’s output, a relay, or the scheduled event.
- Check YouTube Live Control Room. Note the stream status and stream-health message at the time of the failure. Examples in the API documentation include low video bitrate, frame-rate mismatch, and missing audio. These are worth investigating, but the documentation does not say they explain every timer-triggered disconnection.
- Compare both timelines. If the encoder reports that it stopped sending before YouTube reports the stream ending, investigate the encoder or connection first. If the encoder continues outputting but YouTube’s status changes, preserve both records and check the destination configuration and health details.
Verify the YouTube destination and stream key
YouTube’s standard encoder setup uses a YouTube Live server URL and a stream key entered in the encoder. Confirm that the encoder is sending to the intended server URL and that the selected key belongs to the intended stream. Do not swap the URL and key fields; they serve different purposes. See YouTube’s encoder setup instructions.
- Check that the correct YouTube stream or event is selected in the encoder.
- Check the server URL and stream key for that stream, including whether either was changed after the encoder was configured.
- If a relay sits between the encoder and YouTube, verify its YouTube destination settings as well as the source connection. A relay adds another place where a configured duration or disconnect policy may apply.
Check RTMPS settings if the encoder uses RTMPS
If you use RTMPS, check the protocol and the full connection details against YouTube’s documented requirements: an rtmps URL, a valid YouTube ingestion server and path, port 443, TLS, and the SNI hostname. The protocol matters. Google notes that an RTMP library may time out without a sensible response if it makes a cleartext RTMP connection to a YouTube server expecting RTMPS. See Google’s RTMPS guide, updated 2026-09-14 UTC.
Rank #2
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Do not change connection fields at random. Compare the actual URL, port, TLS configuration, and SNI information in your encoder or relay with the guide, then test again while watching both the encoder log and YouTube’s stream status.
Inspect stream health without mistaking it for a timer diagnosis
Review YouTube’s reported health and status around the moment output ends. The documented examples include low video bitrate, frame-rate mismatch, and missing audio. These can affect delivery or quality, so address any warning that applies to your stream. However, those examples do not establish that a health warning caused a particular RTMP output time-limit message. Preserve the exact warning and timestamps when seeking support.
Rank #3
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If a relay or disconnect-protection feature is involved
Check the relay’s own output duration, session settings, and reconnect behavior. A relay may help maintain continuity during a source interruption, but it does not necessarily remove the cause of the interruption or a duration limit configured elsewhere.
For example, Restream’s disconnect-protection documentation describes fallback windows of 5, 15, or 30 minutes, eligibility on paid plans, and termination of destination streams if the source does not reconnect within the selected window. That is a bounded fallback feature, not evidence of a fix for a YouTube RTMP duration cap.
Rank #4
![J-Tech Digital HDMI Encoder, 4K 60Hz Input 1080P 60Hz Output H.264 H.265 IPTV Network Video Encoder, Supports UDP, HTTP, RTSP, RTMP, RTMPS, SRT, HLS, FLV, ONVIF Protocols [JTECH-ENCH4]](https://m.media-amazon.com/images/I/41RYme6n5QL._SL160_.jpg)
- ✅ UItra-HD HDMI Video Input: This HDMI H.264 H.265 IPTV encoder supports up to 4K@60Hz HDMI input and 1080P@60Hz output. Allows for 1 main stream and 3 substreams to be ran simultaneously. Please note that the substreams will feature a lower resolution than the main stream.
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- SDI NDI Encoder Decoder: Encode SDI signals to NDI or decode NDI signals to SDI. It supports NDI|HX3, NDI|HX2, and NDI|HX (Certified), but not full NDI (NDI|HB). Streamlines workflows with high-efficiency NDI|HX formats, ensuring seamless integration between different production systems. Note: ZowieBox cannot be used as an encoder and decoder at the same time. It can only switch between the two working modes, not use both modes at the same time
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