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For a single local clip, MP4 with H.264 video and AAC audio is a sensible compatibility-first choice for looping in OBS. Add it as a Media Source and enable Loop. This is a practical default, not a special OBS requirement: OBS supports several containers, and the file extension alone does not tell you which codecs are inside.
Choose a format based on compatibility, not the 4K60 label
The container, video codec and audio codec are separate parts of a media file. MP4 is the container; H.264 is a video codec; AAC is an audio codec. OBS describes MP4 as a de facto internet-video standard, H.264 as ubiquitous and AAC as widely supported. That makes MP4/H.264/AAC a reasonable first choice when preparing an ordinary looping clip.
OBS also supports formats including TS, MOV, FLV, MKV, AVI, GIF and WebM. A supported extension is not a guarantee that every codec combination will decode properly on your system. Check the actual file in the OBS build and playback hardware you intend to use. See the OBS Audio/Video Formats Guide.
When another option makes sense
- MKV: OBS notes its flexibility across OBS encoders and its resilience when a recording ends unexpectedly. Those are useful recording characteristics, but they do not make MKV necessary for a looping source.
- MOV: It can suit editing workflows and particular codec combinations; OBS notes it is often favored on Mac platforms.
- VLC Video: Consider it for a rotating playlist or broader VLC-library support. It relies on VLC libraries, so VLC must be installed.
- AV1 or HEVC: Support varies by codec, container, platform and decoder. They are not needed just to loop a clip; choose them only when you have a specific reason and have verified playback support.
Loop one video in OBS
- In the scene where the clip should appear, add a Media Source and select the local video file. OBS documents Media Source for playing media files in a scene; see OBS Media Sources.
- Open the source properties and enable Loop. OBS defines this control as specifying whether the file plays again after playback completes.
- Play the source and watch at least one loop boundary. Confirm that video and audio restart as expected and that playback remains smooth in the scene.
- Enable Use hardware decoding when available only if your system has a suitable built-in decoder and testing shows it helps. It is optional, not a separate device requirement.
Use a playlist instead of repeating one clip
For several files in rotation, add a VLC Video source and use its Loop Playlist property. OBS says this source uses VLC libraries and requires VLC installed. For a single clip, Media Source’s Loop setting avoids that extra dependency.
#1 Best Overall
- 【1080P HD High Quality】Capture resolution up to 1080p for video source and it is ideal for all HDMI devices such as PS4, PS3, Xbox One, Xbox 360, Wii U, DVDs, DSLR, Camera, Security Camera and set top box. Note: Video input supports 4K30/60Hz and 1080p120/144Hz. Does not support 4K120Hz/144Hz. Output supports up to 2K30Hz.
- 【Plug and Play】No driver or external power supply required, true PnP. Once plugged in, the device is identified automatically as a webcam. Detect input and adjust output automatically. Won't occupy CPU, optional audio capture. No freeze with correct setting.
- 【Compatible with Multiple Systems】suitable for Windows and Mac OS. High speed USB 3.0 technology and superior low latency technology makes it easier for you to transmit live streaming to Twitch, Youtube, Facebook, Twitter, OBS, Potplayer and VLC.
- 【HDMI LOOP-OUT】Based on the high-speed USB 3.0 technology, it can capture one single channel HD HDMI video signal. There is no delay when you are playing game live.
- 【Support Mic-in for Commentary】Rybozen capture card has microphone input and you can use it to add external commentary when playing a game. Please note: it only accepts 3.5mm TRS standard microphone headset.
Set the live output independently of the file
A source file’s container and codecs do not set the stream’s output resolution or frame rate. In OBS, open Settings > Video and configure the Base (Canvas) Resolution, Output (Scaled) Resolution and Common FPS Values for the scene and stream you intend to produce. OBS’s overview guide says the Common FPS Value should match the desired output FPS, such as 30 or 60; see the OBS Studio Overview Guide.
If the stream should be 4K at 60 fps, set the output accordingly only if your system can render and encode it reliably. A 4K60 source does not force a 4K60 stream, and choosing MP4/H.264 does not guarantee one. The material here does not establish current YouTube Live ingest values for bitrate, keyframe interval, codec or account eligibility, so verify those separately in YouTube’s current guidance rather than guessing them.
Rank #2
- 【1080P 30FPS Full HD Recording】The HDMI capture card connects to your video source and computer, and captures high-definition video up to 1080p 60fps
- 【HDMI Video Capture】Based on high-speed USB 2.0 technology, you can capture a high-definition HDMI video and HDMI audio signal of a signal channel, sending audio and video signals to computers /pc. The gaming capture card is suitable for devices with HDMI output, such as devices for PS4, for Xbox one, for Wii U and for Switch
- 【Screen Sharing for Meetings】The video capture card is a fast, familiar and economical way to share content in conference rooms and online meetings. Connect to presentations without software, just connect to a laptop or tablet via HDMI to start sharing
- 【Plug and Play】This USB capture card does not need to install a driver, so you can use the built-in functions of the current software to get a seamless experience. Because the video capture device is compatible with most third-party software, it can be plug-and-play for Windows, for Ma OS X, and for Linux. The USB2.0 high-speed transmission port makes it easier for you to have real-time streaming for Twitch, for Youtube, for OBS, for Potplayer and for VLC
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Match source size to its on-screen size
If a source is reduced in the scene or the output is below 4K, a needlessly high-resolution source can add workload without serving the presentation. OBS cautions that 60 fps can be more taxing than 30 fps. If playback or output is choppy, reduce resolution or frame rate to a level your system can sustain. OBS’s Encoding Performance Troubleshooting guide covers performance issues.
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Troubleshoot common loop problems
- The file will not open: Check the codec combination, not just the extension. Try an MP4/H.264/AAC version and confirm it plays in the OBS version and on the hardware being used.
- The clip stops at the end: Reopen Media Source properties and enable Loop. For a multi-file rotation, use VLC Video and enable Loop Playlist.
- Playback stutters or output is choppy: Test without hardware decoding, then with it if a suitable decoder is available. Reduce output resolution or FPS, and avoid oversized sources that are scaled down. Consult OBS’s performance troubleshooting guide.
- The stream is not 4K60 even though the file is: Check OBS’s canvas, scaled output resolution and FPS settings, then verify encoder and YouTube requirements separately. The source format does not determine those output settings.
Or let it run in the cloud
If the goal is a YouTube channel that keeps uploaded videos live around the clock, StreamNeo is an alternative to leaving OBS and a computer running at home. Upload a recording or build a playlist, add your YouTube stream key, and go live. Nothing has to stay on at home; videos stream as uploaded at any quality up to 4K 60fps for one flat price per slot, and StreamNeo automatically recovers if YouTube drops the stream. The first day is free with no card. Monthly is $9.99 per month. StreamNeo is for YouTube and plays uploaded videos, not a live camera feed. Learn more at StreamNeo, then start your free day.
Quick Recap
Rank #4
- Turn Your Camera into a Pro Webcam: Connect your DSLR or mirrorless camera to any computer and go live in stunning quality
- Stunning quality: Stream and record in 1080p60 or even 4K60 for razor-sharp detail (Requires a compatible camera and the latest Cam Link 4K model)
- Connect More Than Just Cameras: Use a camcorder, action cam, or even your iPhone to level up your content
- No Lag, No Delays: Ultra-low latency keeps your video and audio perfectly in sync, just like it should be
- Your iPad, Now a Pro Field Monitor: Preview your shots in real time on an iPad with USB-C
Rank #3
- 【1080P 60FPS Video Capture Card】 This HDMI game capture card is based on USB3.0 high speed transmission port, input resolution up to 4K@30HZ, output resolution up to 2K@30Hz or 1920×1080@60Hz. Type c and USB interface can meet most of the devices in daily life. Easily meet the online capture, real-time recording, online meetings, live gaming and other functions, so you have a better visual enjoyment. Note: For capture use only; requires capture software to function and is not intended for direct screen casting to a monitor or TV
- 【Ultra Low Latency Screen Sharing】 HDMI capture card is made of good quality aluminum alloy with strong heat dissipation, allowing you to enjoy ultra low latency while live gaming or video recording or live streaming, avoiding blue screens and lag. This HDMI to USBC capture card supports easy recording of good quality audio or HD video and transferring it to your computer or streaming platform, allowing you to record 60 fps HD video directly on your hard drive and real-time preview
- 【Plug and Play, Easy to Carry】 This HDMI 1080P video capture card does not require any additional drivers or external power supply, just plug and play for fast capture. The capture card is small and lightweight, so you can put it in your bag for emergencies, making it very portable for outdoor live streaming. It's also a great way to share content in game recording, video conference, video recorder and online teaching
- 【Wide Compatibility USB Capture Card】 Easily streams to Facebook, Youtube or Twitch. With the connection, this HDMI to USB C/3.0 video capture devices can be working on several Operating Systems and various software: Windows 7/ 8/ 10, Mac OS or above, Linux, Android, Laptop, Xbox One, PS3/PS4/PS5, Camera, DVDs, Set Top Box, Webcame, DSLR, Switch/Switch 2, TV BOX, HDTV, Potplayer/VLC, ZOOM, OBS Studio etc.
- 【Package Content & Note】 1x HD Audio Capture Card , 1x USB 3.0 to USB C Adapter (A-side 3.0, B-side 2.0), 1x user manual. Please note that you need to restart the OBS Studio software after the audio setup is complete, otherwise it will result in no sound output. When using an adapter, if the device is recognized as USB 2.0, try using the other side with the USB-C port. Simply flip the capture card and reconnect it to be recognized as USB 3.0
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