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What you need to set up
- A prerecorded video file available on the Raspberry Pi.
- FFmpeg for looping the file and sending an encoded stream to YouTube.
- A YouTube channel with a live broadcast configured in Live Control Room.
- The broadcast’s server URL and stream key, which you must keep private.
- A network connection with upload capacity that can sustain the selected stream bitrate.
This is a file-based workflow, not a camera stream. Raspberry Pi’s rpicam-vid camera-streaming guide covers a different source path.
Configure a YouTube Live broadcast
- In YouTube Live Control Room, create or select the broadcast you intend to run.
- Copy the server URL and stream key shown for that broadcast. YouTube’s encoder instructions require both in the streaming software; do not share the key or publish it in scripts, screenshots, or logs.
- Choose an ingest protocol and encoder settings the Pi can actually sustain. YouTube recommends RTMPS, a secure extension to RTMP. Its current settings guidance lists H.264, H.265/HEVC, and AV1 video options, up to 60 fps, and AAC or MP3 audio. Check the specific broadcast’s Live Control Room and your encoder’s support before selecting a codec or protocol.
YouTube recommends constant bitrate encoding, a two-second keyframe frequency, and says the interval should not exceed four seconds. Follow the settings offered for your broadcast; the published supported options do not establish that every Raspberry Pi can encode every listed codec or quality in real time. YouTube’s encoder setup instructions and live encoder settings guidance are the references to check for current options.
Loop the file and send it with FFmpeg
FFmpeg documents -stream_loop -1 as infinite input looping. The -re input option reads at the file’s native rate and is commonly appropriate when sending a file as a live-paced source. The command below shows the workflow, not a guaranteed copy-and-run configuration: replace the placeholders and select codecs, bitrate, resolution, and audio handling that suit the file, Pi, connection, and YouTube broadcast.
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ffmpeg -re -stream_loop -1 -i input.mp4 -f flv "rtmps://<YouTube-ingest>/<stream-key>"input.mp4is the local prerecorded file; use its actual path and filename.is where you set the output codecs, bitrate, frame rate, resolution, and any necessary audio settings. The exact settings depend on your source and the Pi; no specific model or maximum quality is established here.- Use the server URL and stream key provided for the broadcast, following the format supported by your encoder and YouTube. Treat the key as a password.
-f flvselects the output container commonly used in this RTMP-style workflow. Confirm protocol and format compatibility for the encoder configuration you choose.
FFmpeg’s command-line documentation defines the loop option and other command behavior. Before relying on a long-running stream, test the exact command and settings on the specific Pi and file.
Choose settings the Pi and connection can sustain
- Resolution and frame rate: Start with a setting appropriate for the source file and the board’s real-time encoding capability. YouTube lists support up to 60 fps, but that is not a promise that a particular Pi can encode at that rate.
- Video codec: Select a codec supported by both the chosen FFmpeg build and YouTube’s ingest settings. H.264, H.265/HEVC, and AV1 appear in YouTube’s current options; do not assume the Pi can encode each one adequately.
- Bitrate: Use constant bitrate as YouTube recommends, and make sure measured upload capacity can sustain the outgoing bitrate. Leave headroom for network variation rather than setting output equal to the connection’s best-case speed.
- Keyframes: Set a two-second keyframe interval if available; do not exceed four seconds per YouTube’s guidance.
- Audio: Confirm the file has the audio you expect and use an audio codec accepted for the broadcast, such as AAC or MP3 in YouTube’s listed options.
- Protocol: Prefer RTMPS where the encoder and broadcast configuration support it.
Preview or play the file locally with VLC
VLC is useful for checking whether the file plays and its sound is correct, but it is not a substitute for the FFmpeg file-looping and live-output step above. Raspberry Pi says VLC is included in Raspberry Pi OS Full, supports many popular media formats, and uses hardware acceleration in Raspberry Pi OS. Its documentation also describes command-line and fullscreen playback.
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Raspberry Pi OS Lite does not include VLC by default. Raspberry Pi documents vlc-bin and vlc-plugin-base as the headless playback packages. Check the Raspberry Pi OS audio and video documentation for the playback details relevant to your edition.
Test before leaving the stream running
- Run the FFmpeg command with the intended file and settings while watching YouTube Live Control Room for an incoming signal.
- Check that both video and audio arrive, and that movement and sound resemble the content you plan to stream.
- Check upload speed and YouTube’s stream-health indicators and status messages. If the stream is unstable, lower the bitrate or output demands and test again.
- Confirm that the loop returns cleanly to the beginning of the file and that playback remains synchronized over time.
- Only rely on the setup after a representative test on the same Pi, network, and encoding settings you intend to use.
YouTube says streams shorter than 12 hours are automatically archived. Do not assume the same behavior for a stream that runs longer; consult the current YouTube guidance for the broadcast you plan.
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Common problems and fixes
- YouTube never detects the stream: Check that the server URL and stream key belong to the selected broadcast, that the key has not been altered, and that the chosen protocol matches the encoder configuration.
- Stream health warns about bitrate or connection: Verify actual upload capacity, reduce the output bitrate or resolution, and retest. A nominal internet speed does not guarantee stable sustained upload.
- The Pi drops frames or cannot keep up: Reduce encoding demands—such as resolution, frame rate, or codec complexity—and test again. There is no guaranteed maximum quality for every Pi model in the available platform guidance.
- There is no audio or the wrong audio plays: Preview the file locally, check that FFmpeg is including the intended audio stream, and confirm the output audio codec is accepted by YouTube.
- The video plays once and stops: Confirm that
-stream_loop -1is placed as an input option before-ifor the file being looped. - A camera workflow guide does not match these steps: That guide handles camera-originated video. For an existing recording, use the file input and looping workflow rather than a camera capture command.
Copyright and YouTube policy checks
Looping a file does not change whether you have the rights to its video or audio. Before streaming, confirm you have permission to use all included material and review YouTube’s applicable copyright and live-stream rules. Repeating a recording also does not by itself establish eligibility for monetization; assess the channel and content against YouTube’s current policies rather than assuming that continuous playback qualifies.
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