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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchYou can loop a prerecorded video on YouTube Live by sending it from FFmpeg on Linux to the stream URL and stream key shown in YouTube Studio, then configuring FFmpeg to repeat the input. The YouTube-side setup and encoder settings are documented; the exact loop-option syntax can vary with FFmpeg version, so verify it in the manual installed on your machine before using a command. This guide covers the workflow without presenting unverified loop syntax as copy-ready.
What you need before starting
- A Linux computer that can remain on and connected to the internet for as long as the stream should run.
- A prerecorded video file and an FFmpeg build with an encoder and output muxer compatible with the settings you choose.
- A YouTube channel and a stream created or selected in YouTube Studio’s Live Control Room.
- A stable upload connection capable of sustaining the selected video and audio bitrates.
This method sends a file-based video feed; it is not a camera stream. The local computer must keep running FFmpeg and uploading for the broadcast to continue.
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Get the YouTube ingest details
- Open YouTube Studio and go to the Live Control Room. Create a stream or select the stream you intend to use.
- Copy the displayed server URL and stream key into FFmpeg’s output configuration. YouTube describes the key as the information that tells the encoder where to send the feed and allows YouTube to accept it: YouTube Help: Go live with an encoder.
- Keep the key private. YouTube treats it like a password and address for the stream. If it is exposed, reset it in Live Control Room and replace it in the encoder configuration: YouTube Help: Create a live stream with an encoder.
- Check the selected stream’s settings, including auto-start, DVR, and latency, rather than assuming a default. YouTube explains that latency affects the delay from encoding to playback; lower latency can increase buffering. For a prerecorded loop without live interaction, minimum delay is often less important than steady playback.
Configure FFmpeg for a repeating file
FFmpeg must reopen or repeat the input file, then send the resulting stream to YouTube’s ingest endpoint. The loop behavior is configured on the FFmpeg side, not by a YouTube Live switch.
There is no verified, version-independent loop-option command to copy here. Confirm the exact option and its placement in the documentation installed with your FFmpeg version, and check the output muxer and encoder availability on your Linux system. Options and support can differ between FFmpeg releases and builds. Do not assume a flag found in an old post or historical patch is valid for your installed version.
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- Check your installed FFmpeg version and available encoders and muxers using the local FFmpeg documentation or help output.
- Find the current input-looping option for that version and confirm whether it repeats indefinitely or requires a repeat count.
- Configure the input file to repeat, then select an encoder and output format supported by your build and YouTube’s current ingest guidance.
- Set the destination using the YouTube server URL and stream key. Avoid putting a real key in a public script, screenshot, or shell-history example.
- Start with a private or otherwise appropriate test, and watch the Live Control Room preview and stream health before relying on the loop.
Choose protocol, codec, and stream settings
YouTube recommends RTMPS and documents RTMP/RTMPS encoder settings. Its guidance lists H.264, H.265, and AV1 video; AAC or MP3 audio; constant bitrate (CBR); frame rates up to 60 fps; and a two-second keyframe interval, with a maximum of four seconds. Use only codecs and muxing options supported by your installed FFmpeg build. See YouTube Help: Live encoder settings, bitrates, and resolutions for the current platform recommendations.
| Setting | YouTube guidance | How to apply it |
|---|---|---|
| Protocol | RTMPS recommended; RTMP/RTMPS settings documented | Use the protocol and server URL displayed for your stream, and confirm your FFmpeg build supports the chosen output. |
| Video codec | H.264, H.265, or AV1 listed | Select an encoder actually available in your local FFmpeg build. |
| Rate control | CBR recommended | Configure constant bitrate and choose a value suitable for the codec, resolution, frame rate, and connection. |
| Frame rate | Up to 60 fps | Match the source and select a supported rate; do not force a higher rate than the content requires. |
| Keyframe interval | 2 seconds recommended; do not exceed 4 seconds | Set the encoder’s keyframe interval accordingly. |
| Audio | AAC or MP3; 128 kbps stereo recommendation | Use a supported audio encoder and set stereo audio to the recommended bitrate where appropriate. |
Set bitrate to fit the video and connection
Choose the bitrate from YouTube’s guidance row matching your codec, resolution, and frame rate, and make sure the Linux machine’s upload connection can sustain it reliably. For H.264 at 1080p30, YouTube lists 5 Mbps as the minimum and 14 Mbps as the recommended bitrate. These are YouTube-published encoder recommendations, not a guarantee of quality or a measured test result. Other combinations have different recommendations; consult the matching row rather than applying the 1080p30 figures to every stream.
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Test before the intended broadcast. In Live Control Room, check the preview, audio and video, stream health, and any warnings. A nominally sufficient speed test does not guarantee an uninterrupted upload if the connection fluctuates or is shared with other traffic.
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Start, monitor, and stop the loop
- Start FFmpeg on the Linux machine after confirming the input is set to repeat and the output contains the correct YouTube ingest URL and key.
- Wait for the incoming stream preview in Live Control Room. Depending on the stream’s settings, you may also need to select “Go live” there.
- Monitor stream health and check that both picture and sound are present. Respond to warnings rather than assuming that a running FFmpeg process means viewers are receiving a healthy stream.
- To end the broadcast, stop FFmpeg’s transmission and use the Live Control Room end action where applicable.
Common problems and fixes
| Symptom | Likely area to check | What to do |
|---|---|---|
| YouTube does not receive a feed | Server URL, stream key, protocol, or FFmpeg output support | Copy the current URL and key from the selected stream, verify the output protocol and muxer are supported by your FFmpeg build, and check whether the key has been reset. |
| FFmpeg rejects the loop option | Option syntax differs from the installed version | Consult the documentation shipped with that FFmpeg build and use its currently documented input-repeat syntax; do not rely on an unverified command copied from another version. |
| Stream health shows warnings or playback stutters | Bitrate, upload stability, or encoder settings | Check the codec/resolution/frame-rate recommendation, lower the bitrate if the connection cannot sustain it, verify CBR and keyframe interval, and test again. |
| Picture arrives but audio is missing or unsuitable | Audio stream mapping or unsupported audio encoder | Confirm the input contains audio, that FFmpeg maps it to the output, and that the chosen AAC or MP3 encoder is supported and configured appropriately. |
| Preview appears but viewers cannot see the broadcast | Live Control Room action or stream settings | Check whether the stream requires a manual “Go live” action and review its auto-start configuration. |
| The stream stops when the computer or network stops | Local host dependency | FFmpeg depends on the running Linux host and its connection. Keep both available, or use a cloud service designed to continue streaming without a home computer. |
Copyright and YouTube channel considerations
A looping video still contains the same music, footage, or other material as the source recording; repeating it does not grant permission to use it. Confirm that you own the necessary rights or have permission, and review YouTube’s policies before broadcasting or monetizing the content. YouTube’s copyright and reused-content rules are separate from whether FFmpeg can technically send the stream. Review the copyright safety checklist as a practical preflight aid.
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For a prerecorded stream, consider whether the content is sufficiently useful and original for your channel and audience. Technical availability of a continuous live feed is not a promise of monetization eligibility or policy approval.
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