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Before you start
- Your YouTube channel must be eligible for live streaming, verified, and free of live-streaming restrictions during the preceding 90 days. YouTube also requires streamers to be at least 16 years old. See YouTube’s live-streaming eligibility requirements.
- You need an FFmpeg build on the VPS with the encoders and protocols your chosen settings require. Available codecs vary by build; check yours rather than assuming every package includes the same options.
- Have the video files on the VPS, or use the appropriate FFmpeg input for your playlist source. A local concat list is not interchangeable with every M3U/M3U8 or remote playlist format.
- Allow enough VPS CPU capacity to encode in real time and sufficient network upload capacity for the outgoing stream.
Get YouTube’s RTMPS URL and stream key
- Open YouTube Live Control Room and create or select an encoder stream.
- Copy the RTMPS ingest URL and the stream key shown for that stream. YouTube warns RTMPS may not be the default URL displayed, so explicitly select or retrieve the RTMPS endpoint. Follow YouTube’s encoder setup instructions and RTMPS guidance.
- Keep the key private. YouTube describes stream keys as a password and address for the stream. If the key is exposed, reset it in Live Control Room and update the FFmpeg sender. Do not paste a real key into a public script or shell command that others can read.
The destination usually combines the RTMPS URL and key in the form shown by YouTube. Use the exact values and formatting it provides; do not assume a host, path, or key format.
Prepare a local playlist
Create the concat list
For a local playlist using FFmpeg’s concat demuxer, create a text file such as playlist.txt with one file entry per line:
file 'videos/part-1.mp4'
file 'videos/part-2.mp4'
file 'videos/part-3.mp4'Use paths that exist on the VPS. The concat demuxer expects the listed inputs to have compatible streams; mismatched codecs, stream layouts, or timing can cause transition problems. Incorrect duration information can also produce gaps or artifacts. Consult the FFmpeg concat demuxer documentation when adapting the list.
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Understand the path-safety option
The example command uses -safe 0 to allow paths that the concat demuxer might otherwise reject as unsafe. Use it only with a playlist you control and paths you trust. Prefer safe relative paths where feasible. This option does not make an untrusted playlist safe.
If your playlist is an M3U/M3U8 URL or another source type, first determine how that specific input is handled by your FFmpeg build and format. The concat-list example below does not establish a universal invocation for every playlist format.
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Choose YouTube-compatible output settings
YouTube’s RTMP/RTMPS encoder guidance lists H.264, H.265/HEVC, and AV1 video, AAC or MP3 audio, and frame rates up to 60 fps. It recommends constant bitrate (CBR), a 2-second keyframe interval, and advises not to exceed 4 seconds. Select the bitrate from YouTube’s range for your target resolution and frame rate rather than treating one bitrate as correct for every stream. See YouTube’s encoder settings.
- Resolution and frame rate: Match the intended output and a bitrate range appropriate to it. The sample uses 30 fps; it is not a universal recommendation.
- Keyframes: With the sample’s 30 fps output,
-g 60requests a 60-frame GOP, or 2 seconds. If you change the frame rate, adjust the GOP to preserve the intended interval. - Audio: The sample uses AAC stereo at 44.1 kHz and 128 Kbps, values listed in YouTube’s advanced stereo recommendations. YouTube lists AAC at 48 kHz and 384 Kbps for 5.1 audio.
- Color and HDR: For ordinary SDR, YouTube lists Rec. 709 and 8-bit depth. HDR requires a separate, compatible configuration; YouTube recommends HEVC for HDR and does not support AV1 for HDR in the cited settings guidance.
- Encoding load: H.264 software encoding can be demanding. If the VPS cannot sustain the selected resolution and frame rate in real time, reduce the encoding load or choose a compatible hardware encoder available to that server and FFmpeg build.
Run FFmpeg and loop the playlist
Adapt this illustrative command to your files, target bitrate, FFmpeg build, and YouTube-provided destination:
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ffmpeg -re -stream_loop -1 -f concat -safe 0 -i playlist.txt
-c:v libx264 -preset veryfast -b:v 4500k -maxrate 4500k -bufsize 9000k
-r 30 -g 60 -c:a aac -b:a 128k -ar 44100
-f flv 'rtmps://INGEST_HOST/APP/STREAM_KEY'Replace the placeholder destination with the RTMPS URL and stream key from Live Control Room, using YouTube’s required formatting. Protect the key: command-line arguments may be visible to other users or processes on a shared server, and commands can remain in shell history. Use an access-controlled configuration method appropriate to your VPS instead of publishing or sharing a command containing the key.
-rereads the input at its native rate, which is useful when sending file-based media as a live stream.-stream_loop -1loops the input indefinitely. FFmpeg documents this as an input option, so place it before the corresponding-i. See FFmpeg’s advanced options.-f concat -i playlist.txtselects the concat demuxer and its list.-c:v libx264selects H.264 encoding if your build includes that encoder. The bitrate flags set a 4,500 Kbps target and maximum with a 9,000 Kbps buffer in this example; change them to suit YouTube’s range for your output and the VPS’s capacity.-f flvselects the output container used for this RTMP/RTMPS-style ingest workflow. FFmpeg documents the RTMPS protocol.
The example combines documented FFmpeg options and YouTube guidance, but it has not been validated against a particular VPS, playlist, or FFmpeg build. If your input files already use compatible codecs and you want to avoid re-encoding, a different stream-copy configuration may be possible; the right choice depends on the files and YouTube’s accepted input settings. Test the actual feed before relying on it.
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Validate the stream and keep it running
- Start FFmpeg and check its output for connection or encoder errors.
- Wait for the incoming preview in YouTube Live Control Room. For a scheduled stream, YouTube’s encoder workflow has you preview the incoming feed and then select Go live.
- Check that video is moving, audio is present and correctly synced, and the preview reports acceptable stream health.
- Monitor the FFmpeg process, VPS CPU, and network continuity while the stream runs. YouTube recommends continuously monitoring stream quality in its streaming tips.
- To stop, end the stream in YouTube and stop the encoder. YouTube says streams under 12 hours are automatically archived; do not assume a longer, indefinitely looping session will become one complete archived video. See YouTube’s live-stream archiving guidance.
Bandwidth and VPS cost considerations
YouTube recommends upload bandwidth with 20% headroom beyond the combined bitrate of the primary and any backup stream. A VPS’s advertised network capacity is not a guarantee that the stream will have that capacity continuously. Leave room for other server traffic, and use the bitrate for your selected resolution and frame rate from YouTube’s settings rather than copying the sample blindly.
For a DIY setup, account for the VPS rental, storage for the media files, and the server capacity needed to encode at your chosen settings. No specific VPS provider, instance size, or price is listed here, so compare those costs against your actual workload and provider terms.
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Troubleshooting
No incoming preview in Live Control Room
- Verify that you copied the RTMPS endpoint—not a different ingest URL—and the current key from the selected stream.
- Check that the key was not appended to the URL incorrectly and that the endpoint and key belong together.
- Look for FFmpeg connection errors and confirm the VPS can make outbound connections to the endpoint. Network restrictions can vary by hosting provider.
The playlist stops after one pass
Confirm -stream_loop -1 is present before the relevant -i. If you have multiple inputs, make sure the loop option applies to the playlist input you intend to repeat.
Glitches or gaps between files
Check the concat list’s paths, stream compatibility, and duration information. The concat demuxer’s inputs need compatible streams, and inaccurate durations may create artifacts. If the files differ substantially, normalize them to compatible formats before concatenating or use a workflow designed for those inputs.
Dropped frames, buffering, or an overloaded VPS
Check CPU use and FFmpeg’s reported speed. Reduce resolution, frame rate, or encoding complexity if the VPS cannot encode in real time; lower the bitrate if the uplink cannot sustain it. Preserve YouTube’s recommended bandwidth headroom and inspect the Live Control Room preview while making changes.
The stream key may have been exposed
Reset the key in Live Control Room, then update the FFmpeg configuration to use the replacement. Treat any copied command or script containing the old key as compromised.
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