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How to Add a Product Demo to an OBS YouTube Live Loop Without Restarting

Add a demo to an OBS YouTube Live loop by staging a second VLC playlist, then switching at a planned point while the broadcast stays active.

By DocumentaryTube Team 4 min read
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You can change the video OBS sends without deliberately stopping the YouTube broadcast. To reduce the chance of interrupting the clip currently playing, build the updated playlist in a second VLC Video source or scene, preview it, then switch at a planned point without clicking Stop Streaming. OBS does not promise that every source or scene switch will be seamless, so test the handoff with your installed OBS and VLC versions.

Choose the right OBS source

  • VLC Video: Use this for a playlist of multiple files. OBS documents playlist, loop, shuffle, and visibility options for this source. VLC must be installed, and 64-bit OBS requires 64-bit VLC.
  • Media Source: Use this for an individual video file. It can loop a file, but it is not OBS’s documented playlist source.

In OBS, add a source from the Sources dock. OBS describes VLC Video as supporting a playlist of items, unlike Media Source. OBS Project: Media Sources and OBS Project: Sources Guide.

Safer update: stage a second playlist

  1. Leave the current playlist alone. Editing the active VLC Video source’s settings can restart that source’s playback. The current OBS implementation stops the media-list player, replaces the list, and starts playback again when the source is active or set to always play. That is distinct from stopping the broadcast itself.
  2. Create a second VLC Video source or scene. Add the existing videos and the new demo in the order you want. Set loop and shuffle to match the current loop.
  3. Preview the staged version. Confirm the files play and the sequence behaves as intended before taking it live. Keep in mind that a separate source or scene is a practical staging method, not a documented guarantee of a glitch-free switch.
  4. Switch at a planned point. When the current demo finishes, or at another acceptable boundary, switch to the staged scene or source. Do not click Stop Streaming if your goal is to leave the encoder session live.
  5. Verify the outgoing picture. Check OBS’s preview/program output as applicable and confirm the expected content in YouTube Live Control Room.

OBS’s scene and source documentation explains how sources compose scenes; it does not guarantee that every transition will be uninterrupted. YouTube’s HLS guidance concerns encoder ingestion, a separate layer from editing a local VLC playlist: YouTube Live HLS ingestion.

Check what happens when the source is hidden

VLC Video has visibility behavior that can stop and restart, pause and resume, or keep playing when the source is not visible. Choose the behavior that suits your scene-switch method and test it. If it is set to stop and restart, making the staged source visible may start it from the beginning.

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What if you edit the active playlist?

You may be able to keep the broadcast encoder running while changing the active VLC playlist, but the source’s playback may restart. OBS’s current implementation rebuilds and restarts the media list; the cited documentation does not establish a way to append an item while preserving the exact playhead. An OBS forum user also reported that adding media returned playback to the first video, but that is one user’s experience, not a guarantee about every setup: OBS forum discussion.

Option Best fit Tradeoff
Edit active VLC playlist You want the quickest update and can accept playback restarting. The source implementation stops and rebuilds the playlist, then starts playback again.
Stage a second VLC source or scene You want to prepare and preview the revised loop before switching. Requires an extra setup and a deliberate handoff; a seamless switch is not guaranteed.
Use Media Source The new demo is a single file or temporary standalone item. It is not the documented VLC playlist workflow; integrating it into a loop requires additional scene or source control.

Keep the update from becoming an avoidable outage

  • Confirm the new file is available to OBS and plays in the staged source before switching.
  • Check the playlist order, loop, shuffle, and hidden-source behavior rather than assuming the new source inherits the old source’s settings.
  • Make the switch at a point where a brief visual change would be acceptable; official OBS guidance does not certify all scene or source transitions as glitch-free.
  • If the goal is to keep the stream session live, change the output source or scene rather than pressing Stop Streaming.
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If the aim is an always-on YouTube loop rather than a local OBS workflow, StreamNeo plays uploaded videos from the cloud: upload your recording or playlist, add your YouTube stream key, and go live. Nothing has to stay on at home. Videos stream as uploaded, up to 4K 60fps, at one price per slot; automatic recovery is included if YouTube drops the stream. The first day is free with no card. Monthly billing is $9.99 per month. StreamNeo is for YouTube and uploaded video playback, not camera streaming. See StreamNeo, then start the free first day.

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