You can run a prerecorded radio program or playlist as a YouTube Live broadcast by running FFmpeg in a Docker container. FFmpeg supplies the audio and a video track—often a still image, visualizer, or looping video—while Docker packages the encoder and can restart its container after an exit. YouTube must have live streaming enabled for your channel, and the host needs reliable upload capacity for the stream’s total bitrate.
What you need before you start
- A YouTube channel eligible for live streaming. YouTube says channels need verification and no live-streaming restriction in the preceding 90 days; its current guidance also says streamers must be at least 16. Check the channel’s eligibility and enablement before troubleshooting the encoder. YouTube: Get started with live streaming.
- A prerecorded audio program or playlist, plus a video source for a conventional audiovisual live stream. A still image, visualizer, or looping video can accompany the audio; the right FFmpeg setup depends on which assets you have.
- A host with Docker, an FFmpeg image or build that includes the codecs and protocols you need, and sufficient sustained outbound bandwidth.
- The stream URL and key for the YouTube event. Treat the key like a password: YouTube describes stream keys as “your YouTube stream’s password and address.” YouTube: Manage live stream settings.
Enable the YouTube stream and protect its key
- In YouTube Studio, open Live Control Room and create or select the stream you plan to use.
- Open the stream settings and copy the server URL and the matching stream key. Use the details for the selected event; do not mix a URL or key from a different stream. YouTube’s encoder setup guide explains the workflow.
- Prefer RTMPS where available. YouTube recommends the encrypted protocol and explains how to reveal and copy its RTMPS URL in its RTMPS instructions.
- Store the key as a secret, not in a public repository, screenshots, or logs. If you expose it, reset it in stream settings. Docker supports secret mechanisms, but how the secret is delivered to the application depends on your deployment and image.
Choose the media and encoding settings
FFmpeg reads inputs, selects or maps streams, applies encoding options, and writes to the output URL. Option order matters: most options apply to the next input or output. The -stream_loop -1 option loops an input indefinitely. See the FFmpeg command documentation.
One audiovisual file
If a single file already contains both audio and video, loop it and map the desired streams explicitly. For a static radio visual, a modest resolution and frame rate may be sufficient; use the current YouTube bitrate guidance for the chosen codec, resolution, and frame rate.
Separate audio and visual inputs
For separate files, make sure FFmpeg creates a video track as well as the audio track. Map the intended streams explicitly; do not assume an audio-only input will create the standard video stream expected by your YouTube event. A still image requires a video stream with an appropriate duration and frame rate. Check timestamp and duration behavior in a short unlisted test before relying on it for a long broadcast.
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Use YouTube’s current encoder guidance
YouTube currently lists H.264, H.265, and AV1 video support for RTMP/RTMPS ingestion, AAC or MP3 audio, constant bitrate encoding, and a recommended two-second keyframe interval that should not exceed four seconds. The bitrate depends on codec, resolution, and frame rate; use the values in YouTube’s encoder settings, rather than treating one bitrate as universal. For reference, the page lists H.264 at 720p/30 fps as 3 Mbps recommended, and H.264 at 1080p/30 fps as 5 Mbps minimum and 14 Mbps recommended. It recommends 128 Kbps AAC audio for stereo.
A broadly compatible starting point for standard dynamic-range video is H.264 video with AAC stereo audio. Confirm the actual FFmpeg build includes the encoder you choose—for example, libx264—and supports the protocol you intend to use. YouTube’s settings can change, so recheck its current table when configuring a stream.
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Example FFmpeg command
This example shows the shape of a looped audiovisual-file command, not a tested universal recipe. Replace the file, encoding values, and endpoint with your actual choices. Set the URL and key securely in your environment or deployment; never paste a real key into a shared command, source file, or log.
ffmpeg -re -stream_loop -1 -i /media/program.mp4
-map 0:v:0 -map 0:a:0
-c:v libx264 -preset veryfast -tune stillimage
-r 30 -g 60 -keyint_min 60 -sc_threshold 0
-b:v 2500k -maxrate 2500k -bufsize 5000k
-c:a aac -b:a 128k -ar 44100
-f flv "${YOUTUBE_RTMP_URL}/${YOUTUBE_STREAM_KEY}"The example’s 30 fps, two-second GOP, and bitrate values are illustrative settings, not values appropriate for every resolution, codec, or connection. Pick the bitrate from YouTube’s table for your chosen output, including audio in your bandwidth planning. If your inputs are separate, adapt the input options, stream mapping, and duration handling accordingly.
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Run FFmpeg in Docker Compose
Use a maintained image or build your own reproducibly with the FFmpeg codecs and protocol support you have verified. Run one foreground FFmpeg process per service, mount media read-only when practical, and configure the secret delivery to match how your image reads it. The following is only a structural sketch: it intentionally does not invent an image name or a complete secure command.
services:
radio:
image: your-tested-ffmpeg-image
command: ["/bin/sh", "-c", "exec ffmpeg ..."]
volumes:
- ./media:/media:ro
restart: unless-stopped
secrets:
- youtube_stream_key
secrets:
youtube_stream_key:
file: ./secrets/youtube_stream_keyCompose describes service images, commands, environment, and volumes in its service reference. Secret delivery and application access must be configured together for the image you use. Docker advises using secrets for sensitive data rather than environment variables; if you use an .env file for local development, keep it out of version control and restrict its permissions. See Docker’s environment-variable guidance.
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Understand what the restart policy does
restart: unless-stopped can restart an exited container and generally leaves it stopped after a deliberate manual stop, including after a daemon restart. Docker notes that restart policies apply after the container has started successfully. They manage container lifecycle; they do not prove that YouTube is receiving a healthy stream. Review Docker’s restart-policy documentation.
Test the broadcast and monitor it
- Start with a private or unlisted test event. YouTube recommends configuring the encoder in advance and checking the Live Control Room preview before going live. See its live streaming tips.
- Confirm the media decodes, the video is visible, and the audio is audible without clipping. Check that the correct event appears in Live Control Room.
- Watch YouTube’s stream health and encoder preview while the test is running. Try audio and motion representative of the real program rather than testing only a static screen.
- Ensure sustained upload capacity exceeds the combined stream bitrate. YouTube recommends 20% upload headroom; if you send primary and backup streams, account for their combined bitrate. Its streaming tips explain the recommendation.
- After the test is healthy, use the intended visibility and schedule. YouTube says streams under 12 hours are automatically archived; do not assume a longer session will be automatically archived. Follow the encoder workflow to stop the encoder and end the event appropriately.
Recover from network interruptions
Docker’s restart policy can restart FFmpeg if the process exits, but it cannot necessarily detect an encoder process that is still running after a connection failure. FFmpeg’s FIFO muxer documents recovery options for temporary RTMP failures. Its documentation gives an example using -f fifo, -fifo_format flv, -attempt_recovery 1, and -recovery_wait_time 1; the example attempts recovery every second indefinitely. Consult the FFmpeg all-options documentation, check that your installed version supports the options, and test actual recovery on your host and connection. Neither method is an end-to-end uptime guarantee.
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Troubleshooting
| Symptom | Likely checks and fixes |
|---|---|
| FFmpeg cannot connect to YouTube | Verify the event’s server URL and matching key, check whether you configured RTMP or RTMPS as intended, confirm host egress and firewall access, and verify that the FFmpeg build supports the protocol. If the key may be invalid or exposed, replace it from Live Control Room. See YouTube RTMPS troubleshooting and YouTube stream troubleshooting. |
| Live Control Room shows no video | Make sure the output includes a video stream. For separate audio and image inputs, create the video track and map it alongside audio; inspect the command’s input indexes and stream mappings. |
| Audio or video ends unexpectedly | Check which input is being looped, whether the inputs have different durations, and how timestamps and end-of-file behavior are handled. Test the exact media combination briefly before deploying it for a long event. |
| Stream health is unstable | Check sustained outbound capacity against the total audio and video bitrate, including any backup stream, and leave YouTube’s recommended 20% headroom. Lower the chosen output bitrate or resolution if the connection cannot sustain it; validate the result in Live Control Room. |
| Container restarts but stream still does not recover | A restart policy only acts when the process exits; it is not a stream-health monitor. Inspect FFmpeg output and YouTube stream health, then test whether FFmpeg’s FIFO recovery options work with the installed build and the actual RTMP/RTMPS path. |
| Container exits immediately | Check the image’s FFmpeg build and codec availability, command quoting, mounted file paths and permissions, and whether the selected inputs can be opened. Review logs carefully to ensure they do not disclose the key. |
Or let it run in the cloud
If managing a Docker host, media mounts, key handling, upload capacity, and reconnect behavior is more work than you want, StreamNeo is a cloud service for keeping a YouTube channel live from uploaded videos. Upload a recording or build a playlist, add your YouTube stream key, and go live. Nothing has to stay on at home; it streams the uploaded quality up to 4K 60fps at one flat price per slot, automatically recovers if YouTube drops the stream, and the first day is free with no card. Monthly is $9.99 per month. StreamNeo is for YouTube and plays uploaded videos; it does not stream from a camera. Learn more at StreamNeo, or start the free first day.
For rights checks before broadcasting, use the copyright safety checklist. A prerecorded music stream still needs content you are entitled to use; running it through FFmpeg or a cloud service does not establish permission or guarantee YouTube monetization.
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