The Tool Desk
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In OBS Studio, add the video as a Media Source, select the file, enable Loop, and keep the source visible in the scene you send to YouTube. Test the video through its end-to-start transition in OBS and YouTube’s Live Control Room before going live. Looping prevents playback from simply ending when the file finishes, but it cannot guarantee that every file, computer, or playback path will be free of black frames.
Set up a single video to loop in OBS
- Create a scene: In OBS Studio, make or select the scene you intend to stream.
- Add the file: In the Sources panel, select + and choose Media Source. Create a new source, then browse to and select your video file.
- Enable the repeat setting: In the Media Source properties, turn on Loop. OBS defines this setting as whether the file plays again once playback has completed. OBS Media Sources.
- Keep the source visible: Confirm its eye icon is enabled and that it is present in the scene being streamed. Use the preview to check its size and position; if needed, right-click the source and choose Transform > Fit to Screen.
- Distinguish looping from restarting: Restart playback when source becomes active restarts a source when it becomes visible. It does not replace Loop, which repeats the file after it finishes.
- Check the transition: Watch the OBS preview through at least one complete playback and end-to-start transition. Confirm the intended video and audio are present. This is a practical check, not a guarantee against every possible frame drop or black frame.
Loop a playlist instead of one file
For multiple videos, use OBS’s VLC Video source rather than a Media Source. It can play a media playlist and has a Loop Playlist option. VLC must be installed for this source to work. The single-file Media Source is the simpler choice when you only need one video repeated. See OBS’s source documentation for the source properties.
Send the loop to YouTube Live
- Prepare the YouTube stream: In YouTube Studio, open Live Control Room and create or select an encoder stream.
- Connect OBS: In OBS streaming settings, enter the server URL and stream key shown for that YouTube stream. YouTube recommends RTMPS for encrypted ingestion. Treat the stream key like a password; do not share it publicly. Follow YouTube’s encoder setup guide.
- Start the encoder: Start streaming in OBS and wait for the stream to appear in YouTube’s Live Control Room preview.
- Verify before going live: Confirm the preview shows moving video and the expected audio, then start the broadcast in Live Control Room. Check that the correct scene is being sent.
- Monitor the broadcast: Watch stream health and audio/video quality in Live Control Room, and check the public watch page, including on a mobile device. YouTube recommends testing the setup and monitoring the event; see its live-stream tips.
- Stop cleanly: End the stream in YouTube when applicable and stop sending content from the encoder. YouTube’s encoder guide says to stop sending content from the encoder to end the stream.
Use encoder settings appropriate to your upload connection, and test them before broadcasting. YouTube recommends RTMPS and provides its current guidance in encoder settings. There is no single bitrate or resolution that is right for every connection and production.
Choose the setup that fits your stream
| Setup | Best fit | Trade-off |
|---|---|---|
| OBS Media Source | One local video repeated | Enable Loop and keep the source visible in the live scene. |
| OBS VLC Video | A sequence of multiple files | Requires VLC installed; offers playlist looping and shuffle controls. |
| Software encoder on a computer | A typical OBS workflow with scene and source control | The computer and upload connection must remain available during the stream. |
| Hardware encoder | An existing dedicated production setup or higher-production needs | A separate hardware path; it is not required for a basic OBS loop. |
YouTube supports encoder workflows and notes that higher-production events may use professional-grade hardware encoders, while its beginner tips say expensive equipment is not needed to get started. See YouTube’s encoder guide and live-stream tips.
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#1 Best Overall
Elebase USB to USB C Adapter for iPhone 18 Pro Max,USBC Car Charger Adapter
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Diagnose where the black screen appears
- Black in OBS preview: Confirm the correct file is selected, the source is visible, and the source is in the scene you are viewing. Check its transform and playback position, then confirm Loop is enabled. OBS’s Show nothing when playback ends option can hide a source after it completes; it does not make the file loop. Refer to OBS Media Sources.
- OBS preview works, YouTube preview is blank: Confirm OBS is connected to the intended YouTube stream, and check the current server URL, stream key, encoder connection, and stream health. YouTube notes that if a third-party encoder reports a start error, copying the current stream key into the encoder may be necessary. See encoder setup and live-stream troubleshooting.
- YouTube preview works, but viewers see a blank output: Verify the correct scene is being sent, inspect the public watch page, and check playback on a mobile device. Monitor the live stream rather than relying only on the OBS preview. YouTube’s live-stream tips recommend these checks but do not identify one universal cause.
- The blank appears at the loop point: Watch the transition locally in OBS first. Confirm the source is still visible and looping, and check the file’s playback from its end to its beginning. The official documentation explains the loop setting but does not guarantee a seamless transition for every file and system.
- Video is intermittent or stream health is poor: Check the upload connection and encoder settings, and test before going live. Consult YouTube’s encoder settings.
Keep copyright, content and long-stream limits in mind
A looping setup only controls how the encoder plays and sends your file; it does not grant rights to the music, footage, or other material in it. Use content you own or are authorized to broadcast, and review YouTube’s applicable rules before streaming. A loop also does not guarantee that a stream will be archived or rewindable for any duration: YouTube says streams under 12 hours are automatically archived, and its DVR guidance says rewind may be limited or unavailable for streams longer than 12 hours.
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Quick Recap
Bestseller No. 5
Best Value
Anker USB C Hub, 5-in-1 USBC to HDMI Splitter with 4K Display
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
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- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
Sale
UGREEN USB to USB C Adapter Combo 4-Pack, 10Gbps USB C Converter Space Gray
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
Sale
Anker USB C Hub, 7in1 Multi-Port USB Adapter, 4K@60Hz USBC to HDMI Splitter
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Rank #2
Anker USB-C Hub, 5-in-1 USB Hub for Laptops, 4K HDMI Multiport Adapter
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
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