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For one 720p YouTube live stream, plan for about 8 Mbps of sustained upload bandwidth available to the streaming encoder. If the connection is shared or varies during the day, aim for 10 Mbps or more. These are practical planning targets—not official YouTube minimums or guarantees of uninterrupted streaming.
Why 8 Mbps is a sensible target
YouTube recommends a 6 Mbps video bitrate for 720p at both 30 and 60 frames per second. It also recommends leaving 20% room between the stream bitrate and the upload capacity available to the encoder. Applying that margin gives 7.5 Mbps (6 ÷ 0.8), which rounds up to an approximately 8 Mbps planning floor.
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The relevant figure is available upload bandwidth, not download speed or the headline speed advertised for an internet plan. Other devices and network traffic can reduce what reaches the encoder. On a busy or inconsistent connection, 10 Mbps or more provides additional headroom, but no speed target alone guarantees a stable 24/7 stream.
YouTube’s 6 Mbps recommendation and 20% headroom advice are in its encoder settings guidance and streaming tips.
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Set the stream bitrate and encoder correctly
Use YouTube’s 720p recommendation
Set the video bitrate to 6 Mbps for 720p at either 30 or 60 fps, following YouTube’s current encoder table. The table lists that recommendation across its H.264 and AV1/H.265 columns. The encoder must support the configuration you choose.
Use the recommended transmission settings
- Protocol: RTMP or RTMPS, as supported by your encoder and YouTube setup.
- Rate control: Constant bitrate (CBR), which YouTube recommends.
- Keyframes: Set a two-second interval; do not exceed four seconds.
Consult YouTube’s current live encoder settings, bitrates, and resolutions when configuring the encoder; supported options and interface labels can vary by encoder.
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Measure the connection you will actually stream over
- Connect the streaming computer by Ethernet if practical. YouTube recommends a wired Ethernet connection for streaming from a computer. It can make the path more reliable than Wi-Fi, but it cannot increase the upload capacity supplied by your ISP. See YouTube’s filming tips for live streaming.
- Measure sustained upload at the time and place of the stream. YouTube recommends running a speed test to test upload bitrate. A result from another time, device, or network load may not reflect the bandwidth available to the encoder during the broadcast.
- Test an unlisted stream with representative content. Include the expected audio and cartoon movement rather than testing with a static image or silence. Watch YouTube’s stream-health indicators and confirm the connection remains stable.
- Repeat the test under realistic household or workplace load. Shared networks can limit an individual connection. Check whether the available upload remains comfortably above the stream’s 6 Mbps bitrate while other expected traffic is active.
YouTube notes that network interruptions can disrupt a live stream; testing and monitoring help reveal issues but do not prove that equipment or an ISP will stay online continuously. Its encoder guidance also explains that YouTube transcodes an incoming live stream into multiple output formats for viewers, so the creator does not need to send a separate feed for every playback quality.
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Does 24/7 cartoon streaming need a different speed?
The reviewed YouTube encoder and network guidance specifies no separate bitrate for cartoons or for 24/7 operation. For the upload-capacity question, use the same 720p recommendation and headroom calculation: 6 Mbps ingest bitrate, with about 8 Mbps available upload as a practical floor.
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Continuous operation adds a separate uptime challenge. A speed test cannot establish that the computer, router, power, or internet service will remain available around the clock. Validate the full setup over time and check the ISP’s terms and reliability for your location. YouTube’s advice to target upload speed 1.5 to 2 times the combined bitrate applies to simulstreaming across platforms; it is not a mandatory rule for a single YouTube stream. See YouTube’s guidance on streaming across platforms.
Troubleshoot a stream that buffers or loses health
- Measured upload is close to 6 Mbps: There is little room for normal variation or competing traffic. Test again under actual load; if sustained upload remains low, reduce competing network use or compare local internet plans with more upload capacity.
- Speed test looks adequate, but stream health is poor: The test may not reflect conditions during the broadcast. Repeat it on the streaming computer and same network path at the relevant time, then test with the real audio and moving video.
- Wi-Fi performance varies: Try Ethernet between the streaming computer and router. This can improve the local connection path but does not change the ISP’s available bandwidth.
- Stream drops during a network interruption: Check the router, internet connection, and encoder’s reconnect behavior, then run another unlisted test. Network disruption can break a live stream; a bandwidth figure is not a continuity guarantee.
- Viewers report different playback quality: YouTube transcodes the incoming live stream into multiple output formats. That does not remove the need to send a stable source stream at the chosen bitrate.
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