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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteTo stream a prerecorded video repeatedly from an Ubuntu server, run FFmpeg with the video as a real-time looping input and send its output to the RTMPS URL and stream key shown in YouTube Live Control Room. The command below is an illustrative, untested template; adjust it for your file, FFmpeg build, frame rate, and YouTube’s current encoder recommendations.
What you need
- An Ubuntu server that stays on and has enough sustained outbound upload capacity for your chosen stream bitrate.
- A video file the server can read, with the audio and video you intend to broadcast.
- An FFmpeg build that supports the needed codecs and RTMPS output. Package commands and minimum versions vary by Ubuntu release and are not specified here.
- A YouTube live stream’s RTMPS URL and stream key from its settings in YouTube Live Control Room.
YouTube recommends RTMPS, which carries RTMP over TLS/SSL and encrypts data to and through Google’s servers. Use the endpoint provided for your own stream rather than copying a URL from an unrelated example. See YouTube’s RTMPS instructions.
Prepare the video and stream settings
Check the input file
Place the video on the server and confirm its path and that it contains the audio and video streams you expect. The example command assumes an MP4 path, but the input extension alone does not guarantee compatibility; your FFmpeg build must be able to read the actual file’s codecs.
Choose codec, resolution, frame rate, and bitrate together
Use YouTube’s current encoder settings and bitrate table for the selected codec, resolution, and frame rate. For H.264, YouTube recommends 5 Mbps for 720p at 30 fps, 10 Mbps for 1080p at 30 fps, and 14 Mbps for 1080p at 60 fps. The table also provides separate settings and ranges for H.265 and AV1; these example H.264 figures should not be treated as universal settings.
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YouTube recommends CBR and a two-second keyframe interval, with a maximum recommended interval of four seconds. It supports H.264, H.265, and AV1 video, at frame rates up to 60 fps. For stereo audio, YouTube lists AAC or MP3, recommends 128 Kbps, and specifies 44.1 kHz. Match the encoder settings to your input and the encoders available in your FFmpeg build.
Check your server’s outbound connection with a speed test and allow practical headroom above the video bitrate. A connection that only just matches the configured bitrate may not sustain a reliable broadcast.
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Copy the YouTube endpoint and protect the key
- Open the stream’s settings in YouTube Live Control Room.
- Copy that stream’s RTMPS URL and stream key. Do not assume an example endpoint or URL pattern belongs to YouTube.
- Keep the key private. Do not expose it in screenshots, public repositories, shell history, or logs. Anyone who obtains it may be able to send video to your stream.
Run FFmpeg with a looping input
The following is a template, not a tested or guaranteed command for every Ubuntu release, FFmpeg build, or input file. Replace the file path and endpoint/key placeholders with your own values, and adapt the encoding settings to the choices above.
ffmpeg -re -stream_loop -1 -i "/path/to/video.mp4"
-c:v libx264 -preset veryfast -pix_fmt yuv420p
-b:v 4500k -maxrate 4500k -bufsize 9000k -g 60
-c:a aac -b:a 128k
-f flv "RTMPS_URL/STREAM_KEY"FFmpeg documents real-time file input sent through the FLV muxer to an RTMP endpoint; its protocol documentation includes an RTMP output example at FFmpeg Protocols Documentation. The -stream_loop -1 pattern also appears in an AWS IVS streaming-software example, but that example’s endpoint and service-specific arguments are for AWS IVS, not YouTube. Confirm the exact YouTube RTMPS URL in Live Control Room; do not transfer AWS’s URL pattern to YouTube.
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-rereads the file at its normal playback rate rather than sending it as fast as possible.-stream_loop -1repeats the input indefinitely while FFmpeg runs.-c:v libx264selects the H.264 encoder; your build must include it.-b:vand-maxrateset the video bitrate target and cap in this example. The shown 4500k is illustrative, not a YouTube recommendation for every resolution.-g 60sets a 60-frame GOP. It corresponds to a two-second interval only at 30 fps; set the GOP to match the chosen frame rate and YouTube’s keyframe guidance.-c:a aac -b:a 128kencodes AAC audio at 128 Kbps. Confirm that the file contains audio and that this setting suits it.-f flvselects the FLV muxer used for this RTMP-style output.
The template does not include a separate CBR flag. Configure and verify constant bitrate behavior for the encoder and FFmpeg build you use; do not assume the example’s bitrate options alone guarantee identical behavior in every setup.
Start the stream and verify it
- Start FFmpeg with the adjusted command and watch its output for connection or encoding errors.
- Check the YouTube preview and stream-health indicators in Live Control Room.
- Test representative motion and audio, not just a static or silent portion of the video, and review YouTube’s messages.
- Monitor stream health after going live; YouTube recommends testing and monitoring rather than assuming a successful connection means the entire broadcast is healthy.
Troubleshoot common problems
| Symptom | What to check | What to do |
|---|---|---|
| FFmpeg cannot connect | The endpoint may be wrong, stale, or use rtmp instead of rtmps. |
Copy the current RTMPS URL and stream key from the stream’s Live Control Room settings. YouTube distinguishes RTMPS from RTMP in its RTMPS guidance. |
| YouTube reports poor stream health | The selected codec, bitrate, resolution, or frame rate may not match YouTube’s guidance, or the server’s upload path may not sustain the configured rate. | Compare the combination with YouTube’s encoder table and test outbound capacity with headroom. |
| The preview has no audio | The input may lack an audio stream, or the selected audio encoding may not suit the input or FFmpeg build. | Verify the file’s audio stream, check FFmpeg’s output, and test a representative section in YouTube’s preview. |
| The video does not repeat as expected | The process may have exited or the input may not be readable or decodable by the installed build. | Check FFmpeg’s output and confirm the file path and codec support. The loop continues only while the FFmpeg process is running. |
Plan for continuous operation
This method depends on the Ubuntu host, its network connection, the FFmpeg process, and YouTube’s ingest path. The cited documentation does not establish a universal continuous-duration limit, reconnect behavior, Ubuntu package version, server size, or hosting data-transfer charge. Do not assume this command alone guarantees uninterrupted 24/7 operation; verify the hosting and network terms that apply to your server.
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Also review YouTube’s applicable copyright rules and monetization policies before broadcasting prerecorded material. Having a file available does not itself establish that you have the rights to stream it or that a channel meets YouTube’s reused-content requirements.
Or let it run in the cloud
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