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Yes. OBS supports WebM as a local media file, and its VLC Video source can play a playlist of files. Install VLC for the VLC Video source to appear; if OBS is 64-bit, install 64-bit VLC. Preview your actual files in OBS before broadcasting, because support for the WebM format does not guarantee that every file or codec combination will play correctly.
Set up a WebM playlist in OBS
- Install VLC. Install VLC on the computer running OBS. Match its architecture to OBS: OBS documentation says that 64-bit OBS requires 64-bit VLC.
- Add the playlist source. In your OBS scene, add a VLC Video source, then add the WebM files to its playlist. The source is available on Windows, macOS, and Linux, subject to the VLC dependency.
- Choose playback behavior. Set playlist looping if the program should repeat; OBS documents loop as on by default. Set shuffle as needed; it is off by default. Leave shuffle off when the files need to play in a planned order.
- Check playback before going live. Preview the playlist in OBS and listen to its audio. Confirm that each file plays, the order is right, and the end-of-list behavior suits the broadcast. OBS documents WebM support, but does not guarantee playback for every WebM encoding, audio track, damaged file, or computer configuration.
- Configure the outgoing stream separately. Set OBS’s output for the ingest protocol and video codec supported by the YouTube stream you are using. A local WebM playlist is an input that OBS decodes; it is not the format YouTube necessarily receives.
Why VLC Video may be missing
The VLC Video source depends on VLC being installed. If it does not appear in OBS, install VLC and make sure its architecture matches OBS. In particular, OBS’s documentation calls for 64-bit VLC with 64-bit OBS. Restart OBS after installing VLC and check the source list again.
WebM playback and YouTube ingest are different
OBS’s Media Sources documentation lists .webm among supported video file types. That means OBS can use a WebM file as local media; it does not mean YouTube accepts that file or container as a live feed. OBS decodes the playlist and encodes the stream it sends to YouTube.
The appropriate outgoing codec depends on the ingest protocol. For ordinary RTMP ingest, YouTube lists H.264; other protocols have their own codec options and requirements. Check the current protocol and encoder settings in OBS and YouTube rather than choosing them based on the playlist’s file extension.
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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.
Choose the source and playback settings for the program
| Need | OBS choice | What to check |
|---|---|---|
| Play one local file | Media Source | OBS documents Media Source for local media files, including WebM. |
| Play multiple local files | VLC Video | Install VLC; add the files to its playlist and preview them. |
| Repeat the playlist | Enable playlist looping | Loop is on by default according to OBS documentation. |
| Keep a planned sequence | Disable shuffle | Shuffle is off by default according to OBS documentation. |
| Send the broadcast to YouTube | Configure OBS output for YouTube’s selected ingest protocol | Use a protocol-supported codec; local WebM playback does not determine the outgoing format. |
Troubleshoot before the broadcast
- VLC Video is not in the source list: Install VLC. If you use 64-bit OBS, install 64-bit VLC, then restart OBS and look again.
- A playlist item does not play: Preview the file directly in the OBS source and check the exact file. The documented WebM support is not a guarantee for every codec combination or damaged file.
- Picture plays but audio is missing or wrong: Preview the audio in OBS and check the source’s audio-track settings. Verify the file itself before relying on it in a live program.
- The playlist plays in the wrong order: Turn shuffle off and review the playlist order before going live.
- The playlist stops instead of repeating: Check the loop-playlist setting.
- YouTube rejects or fails to receive the stream: Check the selected YouTube ingest protocol and the corresponding OBS output configuration. The local WebM container is not the outgoing stream format.
Or let it run in the cloud
If your goal is a YouTube channel that stays live with uploaded recordings, StreamNeo is a cloud alternative: upload your video or build a playlist, add your YouTube stream key once, and go live. Nothing has to stay on at home; it streams the uploaded video at its original quality up to 4K 60fps for one flat price per slot, and automatically recovers if YouTube drops the stream. The first day is free with no card. Monthly: $9.99 per month. See StreamNeo or pricing. Start your free day with StreamNeo.
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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