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In OBS Studio, add the video as a Media Source, enable Loop, then send the scene to YouTube Live using the stream URL and stream key from YouTube Studio’s Live Control Room. That makes OBS replay the file, but it does not guarantee a gapless boundary: check the picture and sound through a full repeat using your actual setup before relying on it.
What “loop” can—and cannot—guarantee
YouTube Live receives a feed from an encoder; the encoder handles playback of the prerecorded video. OBS’s Media Source offers a Loop property, which OBS Project describes as: “Specifies whether the file play again once playback has completed.” This repeats the file after playback ends, but OBS does not document that the transition is guaranteed to be seamless. A brief pause, black frame, or audio discontinuity therefore has to be checked in the actual media and playback path.
The OBS Media Source is available on Windows, macOS, and Linux, and supports common containers including MP4, TS, MOV, MKV, AVI, and WebM. See OBS Project’s Media Sources documentation.
Set up a looping video in OBS and YouTube Live
- Create or select the scene. In OBS, choose the scene you want viewers to see while the stream is live.
- Add the video. In the Sources panel, select + > Media Source. Choose the local video file in the source properties.
- Enable looping. Turn on Loop in the Media Source properties. Check Show nothing when playback ends as well: that option can hide the source at the end of playback. Confirm that Loop is enabled and that the expected source remains visible in the active scene.
- Check playback before going live. Watch the file reach its end and begin again in the OBS preview. Listen at the boundary as well as watching for a black frame or pause. Repeat the check with the scene and media file you intend to use.
- Get the YouTube ingest details. In YouTube Studio, create or select the live stream and open its Live Control Room. Copy the stream URL and stream key shown for the encoder workflow.
- Connect OBS to YouTube. Enter the stream URL and stream key in OBS’s streaming settings, then start the stream when ready. Treat the stream key as a credential: YouTube uses it to identify the feed the encoder sends. YouTube recommends RTMPS for ingest. Follow the current YouTube encoder settings for the resolution and frame rate you plan to send, since appropriate encoding settings depend on that choice.
- Verify the viewer-facing result. Before making the stream public, test it as a private or unlisted stream and check the transition through YouTube playback. A clean OBS preview alone does not establish that the viewer-facing stream has no boundary issue.
For the current YouTube workflow and labels, consult YouTube’s live-stream settings. Interface labels and platform guidance can change.
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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.
If a black frame or pause appears at the boundary
There is no documented OBS checkbox or export setting here that guarantees a seamless restart. The cause of a particular black frame cannot be determined from the symptom alone, so isolate where it appears before changing settings.
- The OBS preview goes blank: Recheck that the correct Media Source is in the active scene, Loop is enabled, and Show nothing when playback ends is not hiding the source. Watch the source through the end of the file and into the restart.
- The OBS preview looks continuous, but YouTube playback does not: Test with a private or unlisted stream and inspect the viewer playback path. Use YouTube’s current encoder table for the intended resolution and frame rate; do not assume a particular codec, frame rate, or export change will fix every boundary.
- Picture repeats but audio breaks: Listen specifically across the restart. The Loop property repeats playback, but the documentation does not promise uninterrupted audio at the boundary.
- You are using HLS rather than RTMP: YouTube documents HLS requirements including TS segments, segment durations from 1–4 seconds, and a rolling playlist with no more than five outstanding segments. YouTube also documents higher latency than continuous RTMP. These constraints are not a documented fix for a loop boundary. See YouTube’s HLS ingestion guidance.
Or let it run in the cloud
If you want a prerecorded video or playlist to keep running on YouTube without leaving a computer on at home, StreamNeo is a cloud option: upload the video, add your YouTube stream key, and go live. It loops uploaded videos, not a live camera feed. The stream runs from the cloud, supports the uploaded quality up to 4K 60fps at one flat price per slot, and can automatically recover if YouTube drops the stream. The first day is free with no card. Monthly billing is $9.99 per month.
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.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- 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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