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For most creators looping a prerecorded video on YouTube Live, OBS alone is the simpler choice. OBS can play and loop a local file, compose a scene, encode it, and send it to YouTube. SRS is a separate streaming media server: add it when you need a server-side ingest, relay, or protocol-conversion stage—not simply to make a video repeat.
What OBS and SRS each do
OBS: playback, composition, and publishing
OBS combines sources into a scene, encodes the program, and can publish it to YouTube over RTMP. For a single prerecorded video, its Media Source can play a local file and repeat it when playback ends. Supported video formats listed in the OBS documentation include MP4, TS, MOV, FLV, MKV, AVI, GIF, and WebM; listed audio formats include MP3, AAC, OGG, and WAV. OBS is available for Windows, macOS, and Linux. OBS Media Sources documentation · OBS streaming guide
SRS: a server between a publisher and a destination
SRS accepts RTMP publishing and can relay or convert streams to other protocols. Its documentation demonstrates OBS or FFmpeg as publishers. In this arrangement, OBS or FFmpeg creates and sends the stream; SRS receives and serves or converts it. The cited SRS documentation does not establish SRS as a local playlist editor or as a tool that keeps OBS running. SRS getting started
Which setup fits your channel?
| Need | OBS direct to YouTube | OBS through SRS |
|---|---|---|
| Main role | Local media playback, scene composition, encoding, and publishing | Server-side RTMP ingest, relay, or conversion to other protocols |
| Loop a local file | Enable Loop on the OBS Media Source | Loop the file in OBS or use a documented media playout method; the cited SRS pages do not establish it as a playlist editor |
| Moving parts | OBS and YouTube encoder settings | OBS, SRS deployment and configuration, and YouTube or another destination |
| Good fit when | One encoder can send the finished program directly to YouTube | A separate server ingest, relay, or conversion stage is required |
| Long-stream archive planning | YouTube may not capture streams exceeding 12 hours; keep a local recording | The same YouTube archive caveat applies; adding SRS does not remove it |
This is a comparison of documented roles, not a performance test. The cited documentation does not establish comparative reliability, CPU use, or unattended restart behavior for a particular setup.
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Loop a prerecorded video from OBS to YouTube
- Add the video. In OBS, create or select a scene, choose Sources → + → Media Source, name it, and select the local file. Enable Loop if it should restart automatically when playback ends. Add any titles, images, or overlays as other scene sources. OBS lists the supported formats in its Media Sources documentation.
- Set up the YouTube broadcast. Create or schedule a live stream in YouTube Studio. In Live Control Room, copy the stream URL and stream key into the encoder’s streaming settings. YouTube’s encoder setup instructions describe this workflow. Treat the key like a password: do not publish it or share it. If it is exposed, reset it in YouTube Studio before broadcasting again.
- Choose the connection YouTube provides. YouTube offers RTMPS, which is RTMP transported over TLS/SSL. If your encoder configuration supports it, copy the RTMPS URL shown in Live Control Room and use that with the stream key; do not assume an RTMP endpoint can be substituted. See YouTube’s RTMPS instructions.
- Check the stream before going public. Start the encoder early enough to inspect the Live Control Room preview. Confirm the picture and sound are present and that your local recording is being written if you are making one. Monitor the broadcast after it begins rather than treating the preview check as proof of unattended continuity. YouTube’s live streaming help covers encoder setup and stream health.
- Clear the content and plan its duration. YouTube’s livestream terms require compliance with its Community Guidelines and the necessary rights for live and archived material, including music rights. Check every video, image, and audio element before broadcasting. YouTube says streams shorter than 12 hours can be automatically archived, while streams exceeding 12 hours may not be captured; it recommends a local archive backup. Do not rely on a YouTube archive for a continuous or multi-day stream. YouTube livestream terms · YouTube archive guidance
When to put SRS in the path
Use SRS when your design specifically calls for a server to accept an incoming RTMP stream and relay or convert it before delivery. OBS can publish to SRS, and the SRS documentation also demonstrates FFmpeg publishing. You then need to configure and operate SRS as well as the encoder and YouTube destination. If the only requirement is “play this file repeatedly on YouTube,” the documented OBS Media Source loop already addresses playback; SRS adds another component without replacing that step.
Common problems and fixes
- The video stops after one play: Open the Media Source properties and enable Loop. Verify the selected source points to the intended local file.
- YouTube does not receive the encoder feed: Recheck the stream URL and key against the values in Live Control Room. Confirm you used the RTMPS URL if that is the endpoint selected there, rather than assuming an RTMP address is interchangeable.
- The stream appears connected but the preview is wrong: Inspect the OBS scene and source visibility, then confirm the local media is playing and the audio source is not muted. Review the Live Control Room preview before making the broadcast public.
- The stream ends when you expect an archive: YouTube may not capture streams that exceed 12 hours. Make a local recording and plan a shorter broadcast if a complete YouTube archive is important.
- You are unsure whether SRS is needed: If nothing needs server-side ingest, relay, or conversion, send the OBS output directly to YouTube. If such a stage is required, configure SRS for that role; do not expect it to handle local file looping or keep OBS alive.
Or let it run in the cloud
If you want a prerecorded YouTube stream to keep running without leaving your own computer on, StreamNeo is the cloud option to consider first: it keeps the stream on from the cloud, supports any uploaded quality up to 4K 60fps at one flat price per slot, and offers a free first day with no card.
Rank #2
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- Upload your recording or build a playlist.
- Add your YouTube stream key once.
- Go live; StreamNeo loops the uploaded video from the cloud.
Nothing has to stay on at home. Your video streams as uploaded, up to 4K 60fps, at one price per slot, and StreamNeo automatically recovers if YouTube drops the stream. The first day is free with no card; after that, the Monthly option is $9.99 per month. See StreamNeo or its pricing page. Start your free first day on StreamNeo.
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