You can run a prerecorded video to YouTube Live from an Ubuntu server on Hetzner Cloud by copying the stream’s RTMPS URL and key from YouTube Studio, sending a paced FFmpeg file input to that endpoint, and supervising FFmpeg with systemd. The server can keep sending after you disconnect from SSH, but only testing can establish whether its CPU and outbound route sustain your chosen stream reliably. For viewers in India, do not assume a particular Hetzner location is best: the server-to-YouTube ingest path and viewers’ playback paths are separate.
What this setup does—and what it does not do
This guide sends a video file stored on a Linux server to YouTube Live. It is suitable for a documentary or other prerecorded program intended to play as a live stream. It does not turn a cloud VM into a camera, build a multi-video playlist with transitions, or guarantee uninterrupted YouTube availability. The Ubuntu server must remain powered on and reachable; systemd can restart a failed FFmpeg process, but cannot fix an unavailable input, an invalid key, or a YouTube ingest outage.
Use a normal public outbound connection for a simple YouTube push. Hetzner Cloud Networks are for private networking between resources; they are not a prerequisite for sending a stream to YouTube. Hetzner documents native cloud-init auto-configuration for Cloud Networks on Ubuntu 22.04 or later, without additional software for that feature, but this is separate from FFmpeg and does not establish that a VM has adequate streaming capacity. Hetzner Cloud Networks documentation.
1. Create a YouTube encoder stream and protect its key
- In YouTube Studio, select Create > Go Live, then create or schedule an encoder stream in Live Control Room.
- Open the stream’s settings and copy the server URL and stream key. Use the RTMPS URL revealed by YouTube’s lock control; do not substitute a URL guessed from an example. YouTube recommends RTMPS, its encrypted RTMP option. YouTube encoder settings and YouTube Live Control Room guidance.
- Treat the key like a password. Do not expose it in screenshots, shell history, public logs, or source control. If it is compromised, a channel owner or manager can reset it using YouTube’s documented flow. Reset a stream key.
Stream key handling varies by deployment. The example below expects the complete destination to be provided in an environment variable rather than typed literally into the command. A protected systemd environment file is one practical option; restrict its permissions and never publish it. Review service files and logs before sharing them, since configuration can contain credentials.
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2. Install FFmpeg and confirm the encoder
On the selected Ubuntu release, install FFmpeg from the release’s package repositories or another trusted source appropriate to your system. Confirm the installed build and whether it includes the H.264 encoder used below:
sudo apt update
sudo apt install ffmpeg
ffmpeg -version
ffmpeg -hide_banner -encoders | grep libx264Package availability and encoder support depend on the Ubuntu release and how FFmpeg was built. If libx264 is absent, choose a build that supports it or revise the command for an encoder your installation actually provides. Do not assume that every build exposes identical codecs or options.
3. Choose resolution, frame rate, and bitrate
YouTube currently lists RTMP/RTMPS ingest and H.264, H.265/HEVC, and AV1 video codecs. For a conventional CPU-based FFmpeg workflow, H.264 is a straightforward choice when the build includes libx264. YouTube recommends constant bitrate (CBR) and a two-second keyframe interval, with a maximum interval of four seconds. Its H.264 guidance lists 10 Mbps for 1080p30 and 6 Mbps for 720p30; the corresponding listed minimums are 5 Mbps and 3 Mbps. These are YouTube’s published recommendations, not a guarantee that a particular VM or network path can sustain them. YouTube encoder settings.
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| Output target | YouTube H.264 recommended bitrate | YouTube H.264 minimum |
|---|---|---|
| 1080p30 | 10 Mbps | 5 Mbps |
| 720p30 | 6 Mbps | 3 Mbps |
The example command uses 4.5 Mbps video, 30 fps, and a 60-frame keyframe interval, which corresponds to two seconds at 30 fps. It is an illustration, not a universal preset or a claim that a particular source or Hetzner server was tested. Match the frame rate and output dimensions to the source and the capacity you measure. If the server cannot encode reliably or the outbound path fluctuates, lower the output target rather than running at the edge of capacity.
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4. Send a video file with FFmpeg
FFmpeg documents -re for reading a file at real-time rate and shows a file-to-RTMP pattern using the FLV muxer. Adapt that pattern to the RTMPS URL copied from YouTube and verify that the installed FFmpeg build supports the protocol and URL syntax you use. FFmpeg protocol documentation.
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Set a protected environment variable named YOUTUBE_DESTINATION to the complete destination expected by your current YouTube URL workflow, including the stream key. Do not put a real key in the sample or paste it into a shared terminal. The following command is an example for a 30 fps file and H.264-capable build:
ffmpeg -re -stream_loop -1 -i /srv/stream/source.mp4
-c:v libx264 -preset veryfast -b:v 4500k -maxrate 4500k -bufsize 9000k
-g 60 -keyint_min 60 -sc_threshold 0 -pix_fmt yuv420p
-c:a aac -b:a 128k -ar 44100
-f flv "$YOUTUBE_DESTINATION"-repaces the file at its normal playback rate instead of sending it as fast as possible.-stream_loop -1asks FFmpeg to repeat the input indefinitely. It does not make a loop seamless: picture or sound can jump at the file boundary.-b:v,-maxrate, and-bufsizeset the example video rate-control values. Adjust them for the output you have chosen and verify the result in YouTube’s stream preview and health information.-g 60and-keyint_min 60set a 60-frame interval in this example. At 30 fps, that is two seconds; if the source or output frame rate differs, recalculate the interval.-f flvselects the muxer used in FFmpeg’s documented RTMP example. Confirm compatibility with the RTMPS endpoint and installed build before relying on it.
Check the media before launch, including its streams and duration, with ffprobe /srv/stream/source.mp4. If the input has no audio, incompatible pixel format, variable frame rate, or a different frame rate than expected, revise the command rather than assuming the illustrative settings fit. A cloud VM has no attached camera by default, so this file-input command does not cover live capture devices. A playlist with multiple videos, transitions, or scheduled segments needs a separate design.
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5. Keep FFmpeg running after SSH disconnects
Use systemd to start the process at boot and restart it if it exits. This is an operational pattern, not a tested service recipe: confirm paths, environment file permissions, Ubuntu behavior, and FFmpeg options on your own instance.
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- Create a root-readable environment file such as
/etc/ffmpeg-youtube.envcontaining the destination variable. Restrict access, for example withsudo chmod 600 /etc/ffmpeg-youtube.env, and ensure it is owned by root. Avoid printing its contents into logs or support messages. - Create
/etc/systemd/system/youtube-stream.servicewith this template, replacing paths and values for your deployment:[Unit] Description=FFmpeg YouTube file stream Wants=network-online.target After=network-online.target [Service] Type=simple EnvironmentFile=/etc/ffmpeg-youtube.env ExecStart=/usr/bin/ffmpeg -re -stream_loop -1 -i /srv/stream/source.mp4 -c:v libx264 -preset veryfast -b:v 4500k -maxrate 4500k -bufsize 9000k -g 60 -keyint_min 60 -sc_threshold 0 -pix_fmt yuv420p -c:a aac -b:a 128k -ar 44100 -f flv ${YOUTUBE_DESTINATION} Restart=always RestartSec=10 [Install] WantedBy=multi-user.target - Ask systemd to load and start the service, then inspect its status:
sudo systemctl daemon-reload sudo systemctl enable --now youtube-stream.service sudo systemctl status youtube-stream.service - Read recent output and follow new log entries while diagnosing:
sudo journalctl -u youtube-stream.service -n 100 --no-pager sudo journalctl -u youtube-stream.service -f - Stop the stream cleanly when needed:
sudo systemctl stop youtube-stream.service
Systemd restart behavior can recover from a process exit, but repeated failures will still repeat. A restart policy cannot restore a missing file, repair a bad key, guarantee a healthy YouTube ingest, or verify that the broadcast is actually reaching viewers. Use the service logs and YouTube Live Control Room together.
6. Test the stream and its recovery before leaving it unattended
- Start with a short test. Check that YouTube Live Control Room shows a preview and healthy ingest, and that the expected picture and audio are present. YouTube advises testing before an event and monitoring stream health. YouTube streaming tips.
- Measure sustained outbound throughput from the server under realistic conditions, not just download speed. Confirm that the stream bitrate has the recommended headroom and that the VM has CPU capacity left while encoding.
- Run an extended test that includes a file loop boundary. Look for audio gaps, visible jumps, dropped frames, or service restarts.
- Deliberately test recovery: stop the FFmpeg process and confirm systemd restarts it; then test a server reboot and confirm the unit starts as expected. Verify the stream again in Live Control Room rather than treating a running service as proof of a healthy broadcast.
- Repeat relevant checks after changing resolution, frame rate, codec, VM type, source file, or network route.
YouTube says streams under 12 hours are automatically archived. This does not mean a nonstop stream will remain one uninterrupted archive or that every longer stream is archived; plan recording and archive needs separately. YouTube Live Control Room guidance.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Which Hetzner location is best for viewers in India?
No location can be named as best for Indian viewers without measurements of both the server’s route to YouTube ingest and the playback experience from the intended audience locations. Those are distinct paths: FFmpeg sends data from Hetzner to YouTube, and YouTube then serves the live video to viewers. A server geographically closer to India is not automatically the best ingest point or guarantee of better viewer playback. Test the ingest from the actual VM and observe playback from the locations that matter to your audience.
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The available Hetzner Cloud Networks guidance concerns private network configuration, not region-specific latency, YouTube route quality, server pricing, or stream uptime. Choose an instance based on measured outbound stability and adequate CPU for the chosen encoder and frame size; do not infer suitability from a region label alone.
Troubleshooting common failures
| Symptom | Likely check | What to do |
|---|---|---|
| YouTube never receives the stream | Destination URL, key, protocol support, network access | Copy the RTMPS URL and key again from the stream’s settings, verify the installed FFmpeg build supports the protocol, and inspect FFmpeg logs for connection errors. If SSL connection errors occur, YouTube notes port 443 as a troubleshooting option; use only a destination and port supported by the current ingest workflow. YouTube encoder settings. |
| Stream appears but is unstable or unhealthy | Outbound bitrate, fluctuations, CPU load | Check upload capacity and CPU while streaming, preserve headroom, and reduce resolution or bitrate if the path or encoder cannot sustain the target. |
| FFmpeg exits repeatedly | Source path, permissions, encoder availability, service environment | Inspect systemctl status and journalctl; confirm the media file exists and is readable, the executable path is correct, the destination variable is available to the service, and the build includes the selected encoder. |
| Audio or video jumps at intervals | Input boundaries or mismatched frame-rate assumptions | Check whether the jump coincides with the file loop; seamless looping is not guaranteed. Revisit source format and the keyframe calculation, and use edited media or a separate playlist workflow if clean transitions are required. |
| Service is active but no useful live picture is available | Service state is not the same as healthy YouTube ingest | Check the Live Control Room preview and health indicators, then correlate them with FFmpeg logs and outbound measurements. |
Or let it run in the cloud
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