You can run a prerecorded YouTube channel continuously by looping a local video with FFmpeg and having systemd supervise the foreground FFmpeg process. Create a live stream in YouTube Studio, use the ingest URL and key shown for that stream, and verify the incoming preview and live state in Live Control Room. A running Linux service proves only that FFmpeg is running—not that YouTube is receiving a healthy broadcast.
What you need before starting
- A Linux host that can remain powered on and connected to the internet. It may be a server or a home computer; you remain responsible for its power, network, storage and maintenance.
- A compatible prerecorded video file stored at a stable path, such as
/srv/video/channel.mp4. - FFmpeg and systemd installed. Check the actual binary and version on the machine you will use; options, codecs and service directives can vary by build and systemd version. Consult the FFmpeg documentation that matches your installation.
- A YouTube channel enabled for live streaming and access to YouTube Studio’s Live Control Room.
Decide how you will handle long-running sessions and keep a source recording if you need a complete copy independent of YouTube’s archive. YouTube says streams under 12 hours are automatically archived; it does not guarantee a complete archive for a continuous event exceeding that threshold. YouTube’s encoder guide describes the live-stream setup and archive behavior.
Create a YouTube stream and get its ingest details
- In YouTube Studio, open Live Control Room and create or select a stream. If you schedule a broadcast, use that scheduled stream’s settings and watch page.
- Open the stream settings and copy the ingest URL and stream key supplied there. Use the protocol and server URL YouTube provides for this stream; do not assume every stream uses the same endpoint.
- Keep the key secret. Do not paste a real key into a public unit file, public repository, screenshot or support post. If it is exposed, replace or reset it using YouTube Studio’s available controls.
- Configure FFmpeg to send to the selected ingest endpoint. Start the encoder first. For a scheduled stream, YouTube instructs you to wait for the incoming preview and then click Go live in Live Control Room.
- After going live, check the event’s live state and the public, private or unlisted watch page as appropriate. Studio’s preview and live status—not the local process status—show whether YouTube has accepted the incoming stream.
See YouTube’s current encoder instructions for the Studio flow and settings presented for your account.
Loop a local video with FFmpeg
Check the media and FFmpeg build
Before building an unattended service, inspect the input file and confirm that your FFmpeg build can read it and that its audio and video tracks are suitable for YouTube’s selected ingest settings. The required encoding depends on the actual file, installed codecs and protocol. A command that works for one MP4 may not work for a different container or stream.
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RTMP example for a compatible file
This is a command shape to adapt and test, not a universal or tested recipe:
ffmpeg -re -stream_loop -1 -i /srv/video/channel.mp4
-c:v copy -c:a aac -b:a 128k -ar 44100
-f flv 'rtmp://a.rtmp.youtube.com/live2/REPLACE_WITH_STREAM_KEY'-stream_loop -1 tells FFmpeg to repeat the input indefinitely. It belongs before that input’s -i. -re reads a file at its natural playback rate rather than sending it as fast as the machine can process it. The example copies the video stream and encodes audio as AAC, but stream copy is suitable only if the source tracks and output container are compatible. The illustrative URL and placeholder are not a substitute for the ingest URL and key shown in YouTube Studio.
When to transcode or handle audio differently
If stream copy is incompatible, transcode and choose video codec, pixel format, bitrate, frame rate and keyframe interval according to YouTube’s current encoder guidance and the settings Studio displays for your stream. Those values are source- and stream-dependent; do not treat a single set of values as correct for every file or ingest configuration. If the file has no audio, decide on an audio plan and verify it against the platform’s requirements rather than assuming a silent source will be accepted as-is.
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FFmpeg options and supported codecs depend on the installed build. Check its documentation and test the exact input and output locally or with a safe test stream before deploying the service. The FFmpeg documentation is the primary reference.
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For multiple videos, prepare and validate the playlist or combined media input before putting it on air. Combining files into a continuous input can be complicated when clips have different codecs, durations, frame rates or audio layouts. Test transitions and timestamp continuity before streaming publicly; there is no one playlist command guaranteed to handle every mix of source media.
Use the ingest protocol shown in Studio
Do not reuse the RTMP/FLV example unchanged if YouTube Studio gives you an HLS endpoint. YouTube documents different ingest requirements for HLS, including higher latency than RTMP because HLS sends segments. Its HLS guidance specifies a TS segment format, segment durations of 1–4 seconds, a rolling playlist with no more than five outstanding segments, HTTPS POST/PUT, and HLS-specific codec options including HEVC as well as H.264. YouTube’s HLS setup instructions describe these constraints. Follow the current URL and protocol supplied for your selected stream.
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Run FFmpeg under systemd
Keep FFmpeg in the foreground
Use a system service that launches FFmpeg directly in the foreground. This lets systemd track the encoder process, start it at boot and apply a restart policy if that process exits. The following is a structural example, not a drop-in unit: adapt paths, account, environment-file handling and directives to your distribution and systemd version.
[Unit]
Description=YouTube FFmpeg stream
After=network-online.target
Wants=network-online.target
[Service]
Type=simple
User=stream
ExecStart=/usr/bin/ffmpeg -re -stream_loop -1 -i /srv/video/channel.mp4 -c:v copy -c:a aac -b:a 128k -ar 44100 -f flv ${YOUTUBE_INGEST_URL}
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.targetThis sample illustrates foreground supervision only. In particular, do not put a real key in a world-readable unit file or publish it in a command or screenshot. Use a protected configuration mechanism appropriate to your host, restrict access to the secret, and ensure the service account has only the file and device access it needs. Verify that the way you supply the ingest URL and key is supported by your FFmpeg invocation; service managers do not automatically expand arbitrary shell syntax in ExecStart.
Enable and inspect the service
After saving a correctly adapted unit, reload systemd’s unit definitions, enable the service for boot, and start it. Replace youtube-ffmpeg.service below with the unit name you actually created:
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sudo systemctl daemon-reload
sudo systemctl enable --now youtube-ffmpeg.service
sudo systemctl status youtube-ffmpeg.service
sudo journalctl -u youtube-ffmpeg.serviceUse systemctl status for current process state and journalctl for FFmpeg and service diagnostics, including after a restart. The practical systemd guidance here is a starting point; exact directives and behavior can vary with the installed version. Restart settings should include a reasonable delay so a persistent failure does not create a rapid retry loop.
Verify both the process and the broadcast
Process supervision and broadcast health are separate checks:
- On the host: confirm the service is active and inspect recent journal entries for file errors, unsupported codecs, authentication failures, missing executables or network errors.
- In YouTube Studio: confirm that the stream preview appears, the event reaches the intended live state, and the watch page has the intended visibility. A process can remain active while sending an invalid or rejected stream.
- For unattended operation: consider an external check or alert that tests viewer-facing playback. Local service state alone does not establish that viewers can watch.
Test with a deliberately safe stream before relying on the unit for an unattended channel. A restart policy can recover from an FFmpeg process exit; it cannot fix a bad key, missing media, unsupported codec, repeated authentication rejection, full disk, unavailable network or an event that is not live in YouTube’s system.
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Plan session boundaries and archives for a 24/7 channel
A loop can keep sending media, but a nominally continuous 24/7 event runs past YouTube’s stated under-12-hour automatic-archive threshold. Do not assume one uninterrupted event will produce one complete replay. Decide whether to schedule and restart separate sessions, how to minimize gaps at boundaries, and where to retain a full source recording if the archive needs to be complete. Verify the current event and archive behavior in Studio; the cited YouTube guidance does not promise a complete replay of a stream exceeding the threshold.
Troubleshoot common failures
| Symptom | Likely area to check | Next action |
|---|---|---|
| systemd reports the service failed or repeatedly restarts | Executable path, unit syntax, media path, permissions or FFmpeg exit diagnostics | Run systemctl status and inspect journalctl -u youtube-ffmpeg.service. Confirm the configured binary and source file exist and are readable by the service account. |
| Service is active but no preview appears in Studio | Ingest URL or key, selected protocol, network access or unsupported output | Compare the configured endpoint with the current stream settings in Studio, check the journal, and verify the matching RTMP or HLS requirements. Confirm the key has not been changed or exposed. |
| FFmpeg exits at startup with a media or codec error | Input format, missing decoder/encoder, incompatible stream copy or incorrect options | Check the actual file and FFmpeg build. Try an appropriate transcode rather than assuming the source can be copied into the selected output format. |
| Stream runs, but the event is not publicly viewable | Live Control Room state or event visibility | Check the preview and event status in Studio, complete the scheduled-stream Go live step if required, and verify the watch page’s visibility setting. |
| Stream drops and systemd keeps retrying | Network, host resources, authentication or YouTube-side event state | Use journal timestamps to find the failure, verify network and key, and allow a sensible restart delay. Confirm the stream recovers in Studio; an active process after restart is not proof of a healthy broadcast. |
| Continuous event has no complete single archive | Session exceeded the under-12-hour automatic-archive threshold | Plan event boundaries or preserve a separate complete source recording; do not rely on a single archive for an event longer than the stated threshold. |
Costs and operating trade-offs
Self-hosting avoids a managed looping service, but the host’s power, network, storage, administration and recovery are your responsibility. A small Linux computer may be an option for a light stream-copy workload, but compatibility and sustained operation depend on the actual source and encode workload; this guide does not establish a particular device configuration. A rented VPS is another way to keep a Linux host available, with hosting cost and administration to evaluate for your situation. No provider pricing or reliability comparison is established here.
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