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To loop a product demo in OBS, add the clip as a Media Source and enable Loop. For several clips, use a VLC Video playlist and enable Loop Playlist. To transition between different OBS scenes, choose Fade or Cut and set its duration. These controls repeat playback or change scenes; they cannot make mismatched first and last frames of a video file seamless, so inspect and test the loop point separately.
Choose the right playback setup
| What you want to play | OBS source | What to configure | Important behavior |
|---|---|---|---|
| One video repeated | Media Source | Select the local file and enable Loop. | Playback restarts when the file ends; this does not guarantee a seamless visual or audio join. OBS Media Sources |
| Several videos in sequence, repeated | VLC Video | Add the files as a playlist and enable Loop Playlist. | VLC must be installed. OBS notes that 64-bit OBS requires 64-bit VLC. A VLC source can stop playback when hidden, so test how it behaves when switching scenes. OBS Media Sources |
OBS supports common video formats including MP4, MOV, MKV, AVI, and WebM. If you use another format or encounter playback problems, check the file and source behavior in OBS before building the full show. OBS Media Sources
Set up a single repeating product demo
- Create a scene: In OBS, use the Scenes panel to create a scene for the demo. Scenes are compositions of sources that make up the stream. Add other sources, such as a logo or product title, only if they belong in the on-air layout. OBS Studio Overview Guide
- Add the video: In the Sources panel, select + → Media Source, create or select a source, and choose the local video file.
- Enable repetition: Open the Media Source properties and check Loop. Confirm the source is visible in the scene and that the clip plays.
- Fit the composition: Check the video framing in the OBS canvas. Make sure text, product details, and any overlays are not cropped or obscured.
- Test the ending and restart: Preview the clip through its final seconds and into its restart. Watch and listen for a jump, blank frame, abrupt audio cut, or gap.
Play a playlist on repeat
- Install VLC: OBS’s VLC Video source depends on VLC. Match the VLC architecture to OBS; for 64-bit OBS, use 64-bit VLC. OBS Media Sources
- Add a VLC source: In the target scene, select + → VLC Video.
- Build the playlist: Add the demo files in the order you want viewers to see them. Review the list for missing files and unintended duplicates.
- Set it to repeat: Enable Loop Playlist in the source properties.
- Test scene visibility: If the source is hidden when you change scenes, check whether playback stops and what happens when it becomes visible again. OBS documents this visibility behavior; test the switching pattern you plan to use. OBS Media Sources
Make changes between scenes feel smooth
A scene transition changes from one OBS scene to another; a Media Source loop restarts a file. They solve different problems. A Fade can soften a change between scenes, but it will not repair a hard cut or audio discontinuity at the beginning and end of one looping file.
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- Prepare distinct scenes: Use separate scenes for genuinely different layouts or demo segments, such as a product close-up and a feature overview. If the video itself is one continuous demo, it may need only one scene.
- Choose a transition: OBS provides built-in Cut and Fade transitions. Select the transition from the transition controls. Cut changes immediately; Fade blends between scenes.
- Set the duration: Adjust the transition duration to suit the footage and layout, then preview the change. There is no universally best duration for product demos; judge it with the actual scene content. OBS Studio Overview Guide
- Use Studio Mode for planned changes: Studio Mode lets you prepare an edit scene while the live scene remains on air, then transition to the prepared scene. This helps avoid exposing setup changes to viewers. OBS Studio Overview Guide
Fix a visible or audible loop seam
Looping tells OBS to restart playback; it does not make the end of a clip match its beginning. Inspect the boundary in a preview or recording, not just the middle of the video. If the join is distracting, select or edit footage with compatible endpoint frames and audio, or arrange the content so the restart occurs at a deliberate transition. Test the complete cycle, including overlays and scene changes.
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- Picture jumps at restart: Compare the last and first frames. Choose or edit footage so the product position, background, and motion are compatible at the boundary.
- Audio clicks, cuts off, or goes silent: Listen across the restart. Adjust the clip’s audio endpoints or choose a natural pause; a scene Fade alone does not establish that the Media Source’s audio will join smoothly.
- Playlist stops or resumes unexpectedly: Check that the VLC source is visible as intended and that Loop Playlist is enabled. Test the same scene-switching pattern you will use live.
- Transition feels abrupt or distractingly slow: Preview Cut and Fade with the actual footage, then adjust the duration. The appropriate choice depends on the visual change and timing.
Configure and test the YouTube stream
Before building an event around the loop, confirm that the channel can live stream. YouTube says channels need verification and must not have live-streaming restrictions in the previous 90 days. Follow YouTube’s encoder setup guidance for your channel and streaming workflow. Get started with live streaming
- Connect OBS to YouTube: Set up the encoder connection using the YouTube Live workflow. Treat the stream key as a credential: keep it private and do not show it in a screen capture or on stream. YouTube explains encoder setup and stream keys in its live stream with an encoder guide.
- Choose encoder settings for your connection: YouTube’s settings guidance recommends CBR and a two-second keyframe interval, with no more than four seconds. Select resolution, frame rate, and bitrate according to the relevant YouTube settings for that output and the stable upload capacity available; a bitrate from one resolution row is not a universal recommendation. Leave upload headroom rather than assuming your connection can sustain its full measured capacity. YouTube encoder settings, bitrates, and resolutions
- Test representative content: YouTube recommends testing with representative movement and audio. Include the fastest product motion, small on-screen text, music or narration, transitions, and the loop restart in that test. Create a YouTube live stream with an encoder
- Preview before going live: Check the stream in YouTube Live Control Room, including its picture, sound, and stream health. Monitor these during the broadcast as well. YouTube live streaming tips
For prerecorded clips, OBS Media Source or VLC Video is the relevant playback route; a capture card is for an external video device, not a requirement for local video files. OBS Sources Guide
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Or let it run in the cloud
If the goal is to keep prerecorded demos live on YouTube without leaving a PC at home, StreamNeo runs the loop in the cloud: upload a recording or build a playlist, add your YouTube stream key, and go live. Your computer and home connection do not have to stay on. It streams what you uploaded, up to 4K 60fps, at one flat price per slot, with automatic recovery if YouTube drops the stream. The first day is free with no card. Monthly is $9.99 per month. See StreamNeo for details, or start the free day.
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Quick Recap
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ULANZI D100H Wireless Video Editing Keyboard with Dial Knob
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