For a looping relaxation stream, start with one local Media Source in a simple OBS scene, then check the encoder and source before changing quality settings. A compatible hardware encoder may move some encoding work away from the CPU, but the result depends on your computer, OBS version and video file.
If CPU use is still high, test one change at a time: simplify the scene, try hardware decoding where it is available, or reduce the output resolution or frame rate. Watch for the actual problem first, because high CPU use, rendering lag and dropped frames can have different causes.
Start by identifying the bottleneck
Before changing settings, establish what is going wrong. OBS may show high CPU use while the stream itself remains smooth, or the stream may stutter because the scene is taking too much GPU time rather than because the encoder is overloaded. A single CPU percentage does not identify the cause by itself.
Run the relaxation video for several minutes with the scene and output settings you normally use. Note whether the preview is smooth, whether the recording or stream has skipped frames, and whether the computer becomes slow in other applications. If you already have a test stream configured, use that rather than changing settings during a public broadcast.
OBS separates several kinds of performance problem in its encoding performance troubleshooting guide. Its guidance explains that OBS needs GPU resources to composite and render a scene, while encoding is a separate part of the work. That distinction matters for a relaxation channel with a large background video, animated overlays or browser sources.
Also note the details of the test: your operating system, OBS version, source file format, source resolution, output resolution, frame rate and current encoder. If you later report that a setting helped, those details make the observation useful rather than turning it into a general promise.
Build a minimal looping scene
Create a scene intended only for the stream. For a basic relaxation loop, it may contain one Media Source and nothing else. Add a small text overlay or logo only if it serves a clear purpose, then test the scene before adding animated alerts, browser pages, filters or decorative layers.
A minimal scene reduces the amount OBS has to composite and gives you a clearer baseline. It also makes troubleshooting easier. If the one-video scene runs well but the full scene does not, you can add sources back one at a time and find the change that alters performance.
Sources that are hidden may still consume resources, depending on their type and configuration. Remove sources you do not need instead of keeping several unused layouts in the same active scene collection. Browser sources are particularly worth reviewing because they can display moving content, run scripts and update independently of the video.
Filters deserve the same treatment. Colour adjustments, blur, chroma keying and other effects can add processing work. A still logo and a simple text label are different from a browser-based clock, animated particles and several filters over a full-screen video. Use the simplest version that gives the channel the appearance you actually need.
Keep the video at the correct aspect ratio when you place it on the canvas. Avoid repeatedly transforming a very large source when the final stream is substantially smaller, although the effect of source size varies by file, hardware and scene. The sensible approach is to test the same scene with the source at its intended display size rather than assuming a change will save a fixed amount of CPU.
For a wider discussion of the visual side of these channels, the 24/7 aquarium and relaxation visual loops guide covers choices such as long visual loops, overlays and channel presentation. Here, keep the visual design deliberately plain until the performance baseline is stable.
Enable Loop on the Media Source
In OBS, add the file as a Media Source rather than building a complicated scene around a separate playback application. In the source properties, enable Loop so OBS starts the file again when playback finishes. This is the setting that answers the practical question, “How do I loop a video in OBS?”
Check that the correct file is selected and that it plays normally before you begin performance testing. A damaged file, unsupported codec or unusual audio track can create a playback problem that looks like a general OBS problem. If the file does not play reliably at the start, changing the encoder will not fix the underlying source issue.
The OBS Media Sources documentation describes Loop and other source properties, including hardware decoding when a suitable decoder is available. Hardware decoding can help with some supported combinations of file and hardware, but OBS does not promise a CPU reduction for every computer or media file. Enable it only if the option is available, then compare the same scene with it on and off.
Use the other Media Source options with care. Restart playback when the source becomes active can be useful when a scene is shown again. Close the file when inactive may release resources while the source is hidden, but it can introduce a reload delay and is not a general CPU-saving solution for a video that remains visible continuously.
For a single always-on relaxation scene, the useful starting point is usually straightforward: one local file, Loop enabled, no unnecessary restart behaviour and no hidden playback copies. If you are working through the wider problem of a stream ending when the file finishes, the guide on keeping a YouTube livestream from ending when a video file finishes explains why looping and the broadcast lifecycle are separate concerns.
Check the encoder in OBS
Open the output settings and identify the encoder currently used for streaming. Software encoding performs the encoding work on the CPU. A compatible hardware encoder can move that part of the work to a specialised component on the graphics hardware or processor, which may leave more CPU capacity for OBS and the rest of the computer.
That does not make hardware encoding automatically better in every case. Available encoders depend on the operating system and hardware. OBS documents options such as NVENC and AMD AMF on supported Windows and Linux systems, Intel Quick Sync on supported Windows and Linux systems, and VideoToolbox on Apple systems, with qualifications for particular Mac configurations. The choices shown in your own OBS installation are the relevant ones.
The OBS hardware encoding guide is the primary reference for supported families and current qualifications. Check it alongside the encoder list in OBS rather than selecting a name from a tutorial written for different hardware.
Compare the current software encoder with one compatible hardware option using the same scene, resolution, frame rate and output settings. Watch both the computer's responsiveness and the resulting picture. A change that lowers CPU use but produces visible quality problems, instability or a stream that fails to connect is not a useful change for your channel.
Do not infer that the newest-looking encoder name is the best choice. Encoder quality and behaviour vary with the implementation, generation of hardware, settings and content. A slow-moving relaxation scene may be less demanding visually than fast gameplay, but that still does not provide a universal result for every encoder or file.
Test hardware encoding if it is available
If OBS offers a compatible hardware encoder on the existing machine, test it before considering a hardware purchase. The point is to find out what this computer can do with this scene, not to assume that a separate graphics card or a new processor is required.
First save or write down the current settings. Then change only the encoder and run the same test. Keep the relaxation file, scene, output dimensions and frame rate unchanged. If CPU use falls but the preview shows rendering lag, examine the scene and GPU side as well. Encoding work and scene rendering are related to the final stream but they are not the same operation.
Next, inspect the output. Look for blockiness in dark gradients, flashing details, audio drift, stuttering at the loop point and a failure to maintain the intended stream connection. A quiet forest or candle scene can expose compression changes in shadows and gentle movement, even when a quick glance at the preview looks acceptable.
If hardware encoding does not improve the result, return to the earlier setting and record that outcome. It may be the right choice for that machine. Hardware encoding is a testable option, not a guaranteed CPU remedy, and hardware decoding of the media source is a separate setting with its own compatibility conditions.
This is also where the choice between running OBS all night and using a cloud-based workflow becomes practical. If the computer remains a point of failure after careful testing, OBS and cloud streaming services compared can help you assess whether the operating model itself suits the channel. StreamNeo removes the need to leave your computer running by accepting the uploaded video and YouTube stream key, then running the channel from the cloud with monitoring and automatic restarts.
Inspect the source and scene for CPU load
If the encoder test did not resolve the problem, return to the scene and media file. Temporarily remove every source except the looping video. If performance improves, restore the other sources one at a time. This gives you evidence about which addition matters on your computer.
Check whether the video is much larger than the output needs to be. A source intended for a substantially larger display may require more work than a source prepared for the stream's actual presentation. Do not treat this as a guaranteed CPU saving: decoding, scaling, compositing and encoding depend on the format and hardware path. Use it as a reason to compare two otherwise identical tests.
Review the media format as well. OBS may use different playback and decoding paths for different formats, and hardware decoding may be available for some combinations but not others. If you have several versions of the same relaxation video, test them with the same scene rather than judging from file extension alone.
Remove demanding filters and animated browser content from the baseline. A browser overlay may be useful for a live clock, weather panel or donation message, but it introduces another application-like workload into a scene that could otherwise be a single video. If the overlay is important, test it separately and decide whether the information justifies the additional work.
Audio can also be part of the source review. Make sure you are not running duplicate copies of the same audio, adding unnecessary audio filters or monitoring a source through several paths. A relaxation stream often needs only the file's audio and a simple output path. Keep the audio arrangement understandable so that a later fault is easier to trace.
Before each test, close unrelated programs that compete for CPU, GPU, memory or disk access. This does not prove that OBS caused a problem, but it makes comparisons less noisy. Test the same file from the same storage location and avoid changing several scene properties between observations.
Try lower resolution or frame rate
Only change output quality after the scene and encoder have been reviewed. Lowering output resolution can reduce the amount of work needed for encoding. Lowering frame rate can reduce the number of frames rendered and encoded each second. OBS describes both resolution and frame rate as workload factors, while also noting that higher frame rates can require more resources.
The trade-off is visible to the viewer. A lower resolution can soften fine detail in water, trees, text or slow gradients. A lower frame rate can make pans and other movement look less smooth. For a mostly static devotional image or gently moving ambience loop, the change may be acceptable; for a camera move across a detailed landscape, it may not be.
Change one setting, then compare the same section of the video. Do not lower both resolution and frame rate at once if your aim is to understand which change helped. If the result is not acceptable, restore the previous setting and test the other variable instead.
Your output setting should match the channel's actual presentation rather than the source file's maximum dimensions. A large source can be useful for cropping or future versions, but sending every source at its largest possible size is not automatically necessary for a relaxation stream. The OBS system requirements page notes that requirements vary with encoder, resolution, frame rate and scene complexity.
If the stream is intended to be heard more than watched, consider whether the visual detail supports the channel's purpose. A listener using a phone may value stable playback more than the finest background texture. If viewers expect a high-detail scenic loop, retain the quality that makes the scene worth watching and look for unnecessary scene work first.
Do not copy example bitrates or resolutions from another machine as proof that your system will behave the same way. OBS examples and guides provide useful context, but they are not a benchmark for your particular file, computer or internet connection. For connection problems, the separate YouTube live bitrate and dropped-frames checklist addresses a different part of the chain.
Test changes before going live
Make a simple test plan and keep it unchanged apart from the setting under review. Start with the minimal scene and current encoder. Test the encoder, then the media-source options, then scene additions, and only afterwards resolution or frame rate. The order is not a guarantee of the best result, but it prevents random changes from hiding the cause.
Run a test recording or private stream long enough to reach the part of the file where the loop returns to the beginning. The loop transition matters: a file may play smoothly for most of its duration and still show a pause, audio discontinuity or spike when it restarts. Check several transitions if the file is short enough for that to be practical.
During the test, record four observations:
| What to check | What it tells you |
|---|---|
| CPU use and computer responsiveness | Whether the change appears to reduce CPU pressure on this machine |
| Preview and recording smoothness | Whether scene rendering or playback has become a problem |
| Stream statistics and skipped frames | Whether the output is reaching YouTube consistently |
| Picture and audio quality | Whether the resource change is acceptable to viewers |
Use the same source and scene when comparing options. Write down the operating system, OBS version, encoder, output resolution, frame rate and media format. If you later move the setup to another computer, repeat the test rather than assuming the old result transfers.
OBS's Quick Start Guide recommends testing your settings before an important broadcast. That is particularly important for an overnight channel, because a setup that survives a short preview may still fail at a loop transition, after a scene change or when another program starts using the computer.
Once you have a stable combination, save the scene collection and output settings. Keep a copy of the media file and note the changes that were deliberately rejected. This makes recovery faster when an OBS update, driver change or replacement video alters the behaviour.
Before committing, compare the operating options on the pricing page. When the file and channel are ready, start free — 24-hour trial, no card.
FAQ
How do I loop a video in OBS?
Add the file as a Media Source, open its properties and enable Loop. Test the file from the beginning and through the point where it restarts, because a loop setting does not correct a damaged or incompatible source file.
Should I use hardware encoding in OBS?
Test a compatible hardware encoder if OBS offers one on your existing computer. It may shift encoding work away from the CPU, but the result depends on the hardware, operating system, OBS version and output settings, so compare it with your current encoder rather than treating it as a guaranteed improvement.
Why is OBS using so much CPU?
The cause may be software encoding, a large or difficult media source, filters, browser sources or other scene work. High CPU use alone does not prove that encoding is the bottleneck; simplify the scene and test one change at a time while checking rendering, output smoothness and stream statistics.
Will lowering resolution or frame rate always fix the problem?
No. Lowering either can reduce processing demand, but it also changes picture detail or motion smoothness and may not address the actual bottleneck. Test the same scene with one adjustment at a time and keep the change only if the output remains suitable for your viewers.