To loop a local video in OBS, add it as a Media Source and enable Loop. To encode the YouTube broadcast with NVENC, select an NVIDIA NVENC encoder in OBS’s streaming output settings if one is available on your system; looping the file and encoding the stream are separate jobs.
Those steps do not guarantee an uninterrupted broadcast. OBS version, operating system, graphics hardware, drivers and YouTube’s current ingest guidance all affect the choices you see and the result you can sustain. Set up the source and encoder, then test the complete broadcast rather than assuming that a repeating preview means a continuous live stream.
Add a looping Media Source
Create or open the OBS scene you intend to broadcast. In Sources, add a Media Source, give it a recognisable name such as “Main loop”, and select the local video file. In its properties, turn on Loop. OBS describes this setting as restarting the file when playback reaches the end. The source controls playback; it does not connect OBS to YouTube or keep the broadcast running if OBS or the network stops.
Watch the preview through at least one file boundary. Check that the ending and beginning join in a way that suits the content: a hard cut may be fine for a news information loop, while a visible pause or sudden change in devotional audio may be distracting. Listen as well as watch. Confirm that the file has an audio track, that its level is audible in the OBS mixer, and that no other source is unintentionally playing over it.
OBS’s Media Source documentation lists common video formats, including MP4, MOV, MKV and WebM, but a listed format does not guarantee every file encoded in that container will play correctly on every computer. If the source stays black, has no audio, or fails to restart, check the file itself and OBS’s source properties before changing the stream encoder. The guide to reducing CPU use when OBS loops recorded lessons is relevant if the computer struggles while decoding or displaying the source.
For a single file, Media Source is the direct route. If you need a sequence of several clips, OBS also offers a VLC Video source with a playlist and a Loop Playlist setting. That source depends on VLC being installed; OBS notes that 64-bit OBS needs 64-bit VLC. Use it only when a playlist is needed, and test the transitions between items. Adding a playlist does not change the separate task of choosing a streaming encoder.
Select an available NVENC encoder
Open Settings → Output and find the streaming encoder choice. The precise labels and layout can vary by OBS version and output mode. In Simple output mode there are fewer controls; Advanced mode exposes more detailed streaming settings. If an NVIDIA NVENC option appears, select it for the stream. Do not confuse a recording encoder selector with the streaming one: the stream is what OBS sends to YouTube, while a local recording is a separate output that may have its own encoder and settings.
NVENC is NVIDIA’s hardware video encoding capability. OBS can offer it only when the software can access supported NVIDIA hardware and a suitable driver. If the menu does not list NVENC, do not assume a setting is merely hidden or that selecting a different file-loop option will make it appear. First check your OBS build, operating system, GPU and driver, then use an available encoder. The OBS hardware encoding guide describes platform and hardware considerations; its compatibility notes are a baseline, not a promise that every machine will expose every codec or run a chosen configuration well.
After choosing NVENC, configure the streaming output for live ingest rather than copying a recording preset. YouTube’s live guidance calls for constant bitrate (CBR) and recommends a keyframe interval of two seconds, not exceeding four seconds. The controls may appear under the streaming encoder’s advanced settings. If a field is expressed in frames rather than seconds, its equivalent depends on the frame rate, so confirm the units shown by your OBS version rather than guessing.
An encoder choice is not a quality guarantee. Image quality depends on the codec, resolution, frame rate, bitrate, content and the capabilities of the specific GPU. A slowly changing ambience scene may look acceptable at a lower data rate than rapid movement, but evaluate the actual stream at the intended quality. Hardware encoding can move encoding work away from the CPU; older hardware encoders may produce lower quality than software encoding at the same bitrate. Choose by testing the result and checking whether the whole computer remains responsive.
Configure the YouTube stream output
In YouTube Live Control Room, create or select the intended stream and obtain its stream URL and stream key. In OBS, open Settings → Stream, choose the YouTube service or a custom destination if your workflow requires it, and enter the connection details. Treat the stream key as a credential: do not show it in a recording, screen share, public post or article. YouTube’s stream setup instructions explain how to create a stream and connect an encoder.
The encoder sends the stream; it does not create the video loop. Confirm the selected scene, source visibility and audio mixer before starting. If OBS connects but YouTube’s preview is blank, check the scene and source in OBS first. If OBS displays the loop but YouTube receives nothing, check the stream connection details, the selected YouTube event and the platform’s stream-health messages. The overview of RTMP ingest can help make sense of the hand-off between an encoder and a live platform.
Set the output resolution and frame rate to a sensible target for your content and connection. A static devotional image or lofi background does not automatically need a high frame rate; movement, text legibility and the source file matter. Use YouTube’s current codec-specific bitrate table for the chosen resolution and frame rate, then check that your upstream connection can sustain the target. A bitrate copied from a different codec or frame rate is not a universal setting.
YouTube’s current live encoder guidance lists RTMP/RTMPS ingest and H.264, H.265/HEVC or AV1 video options, but the choices available in OBS depend on the encoder and system. Use a codec supported both by your selected NVENC implementation and by the intended ingest path. For example, YouTube’s published recommendations include 1080p at 30 fps at 5 Mbps for H.264 or 4 Mbps for AV1/H.265, and 1080p at 60 fps at 17 Mbps for H.264 or 12 Mbps for AV1/H.265. These are YouTube recommendations, not mandatory targets for every video or internet connection. Check the official live encoder settings before using a value, since platform guidance can change.
Check hardware and driver compatibility
Before troubleshooting a missing menu item, establish what OBS is running on. Note the OBS version, operating system, graphics card model and driver version. Update OBS and the NVIDIA driver through the appropriate official channel if needed, then restart OBS and inspect the streaming encoder dropdown again. The option names and supported codecs can change with software, drivers and GPU generation.
OBS’s hardware-encoding page gives GeForce 750 Ti or 900-series (Maxwell) or higher as its stated NVENC baseline for Windows and Linux, and advises current drivers. Treat that as guidance from OBS, not a guarantee of availability or performance. A particular operating system, driver, OBS package or codec combination may expose a different set of options. If you use a laptop with integrated and discrete graphics, check that OBS can access the NVIDIA GPU; access and power settings differ by system.
If NVENC is absent after those checks, select an encoder that is actually available and test it. Software encoding may suit a capable CPU; another supported hardware encoder may be present on a system with different graphics hardware. If the only available option cannot produce an acceptable stream at your chosen output, lower the workload or use a different machine or workflow. The guide on configuring OBS for a 24/7 stream on a low-end PC covers related trade-offs around limited computer capacity.
Do not judge system capability from one menu alone. While a test stream is running, watch OBS’s status indicators and the computer’s responsiveness. Dropped frames from rendering, encoding lag and network interruptions point to different problems, so note the actual warning before changing settings. A lower resolution, frame rate or bitrate may reduce load, but it changes the picture or ingest demand; make one adjustment at a time and verify the outcome.
Match settings to YouTube guidance
The settings for a live stream and a local recording are not interchangeable. YouTube’s live ingest guidance specifies CBR and a two-second keyframe interval recommendation, with four seconds as the maximum. OBS’s NVENC recording baseline uses different quality-oriented controls such as Constant QP and a preset. Do not copy recording values into the live stream controls just because both menus mention NVENC.
For stereo audio, YouTube’s guidance lists AAC or MP3 and recommends 128 Kbps. For SDR video, it specifies Rec. 709 and 8-bit. These are platform recommendations to compare against the options in your OBS version and the characteristics of your source. If you cannot select an expected value, confirm the chosen encoder, codec and output mode before concluding that OBS is malfunctioning.
A practical starting point is to decide the audience-facing resolution and frame rate first, then consult the current YouTube table for that combination and codec. Select a bitrate your connection can maintain with headroom rather than aiming at a maximum your upload link only reaches intermittently. A household connection can be shared with phones, video calls or other uploads; test at the time and from the place where the channel will actually run.
Keep in mind that YouTube’s recommended bitrate examples are tied to resolution, frame rate and codec. For instance, the 1080p at 30 fps examples above differ between H.264 and AV1/H.265, as do the 60 fps examples. They should not be combined into one generic “1080p” rule. Check the official table when selecting settings and again when YouTube updates its guidance.
Test the continuous loop
A looped source and a continuous live broadcast are not the same thing. The Media Source setting restarts a local file at its end; OBS still has to stay open, retain its connection and send data to YouTube. A preview can loop correctly even when the broadcast is offline. Conversely, a live connection can remain active while a source has stopped or gone silent. Test both behaviours.
Start with a private or unlisted test if appropriate for the channel. Confirm that YouTube receives the intended picture and sound, that the file returns to its beginning, and that stream health remains acceptable through the transition. Monitor OBS for dropped frames or encoding lag and YouTube’s Live Control Room for ingest warnings. Do not rely on a short preview alone to prove a long-running setup will keep working overnight.
If the channel needs an archive, decide whether to record locally as well as stream. YouTube says streams under 12 hours can be automatically archived, and warns that a stream exceeding 12 hours may not be captured at all. For a broadcast expected to exceed that duration, configure a local recording rather than relying solely on YouTube’s archive. OBS recommends MKV for recording resilience because an ungraceful stop is less likely to corrupt the whole file; OBS can remux an MKV recording to MP4 afterwards. Confirm you have enough storage and test recording and streaming together, since a local recording adds resource use.
| Workflow | Useful when | Trade-off to check |
|---|---|---|
| Media Source with Loop | You are repeating one local video | Simple for one file; it only governs that source’s playback. |
| VLC Video with Loop Playlist | You need several local clips in sequence | Requires VLC and compatible installation; test playlist transitions. |
| Stream without local recording | You do not need your own copy | Avoids local storage and recording load, but long streams may not be archived by YouTube. |
| Stream plus local MKV recording | You want a separate archive, especially for a long broadcast | Uses storage and resources; verify both outputs together. |
If the stream is important enough to run unattended, also consider what happens after a computer restart, power cut or dropped connection. OBS on a local machine does not by itself promise automatic recovery. For a locally hosted setup, the guide to recovering an OBS stream after a power outage is useful background. Where keeping a computer switched on is itself the operational difficulty, StreamNeo removes that specific burden by running an uploaded video as a YouTube live stream without requiring your computer to stay on; it remains a YouTube-only workflow, and it does not replace checking the content, channel or current platform requirements.
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 local file to a Media Source and enable Loop in its properties. Check the preview and audio, including the transition at the end of the file. That loops the source, not the YouTube connection.
How do I use NVENC to stream a loop to YouTube?
Set up and loop the Media Source first, then select an NVIDIA NVENC encoder under the streaming output settings if OBS offers one. Configure the live output to match YouTube’s current ingest recommendations, connect the stream URL and key, and test the received video and audio. NVENC may not be available on a given system.
Why is NVENC missing from my OBS encoder list?
OBS needs to be able to access supported NVIDIA hardware and drivers, and the available choices vary with the operating system, OBS version, GPU and driver. Check those items and reopen OBS before checking the streaming encoder dropdown again. If NVENC remains unavailable, use an encoder that is listed and test whether it meets your needs.
Will YouTube automatically save a very long loop?
Do not rely on that for a stream exceeding 12 hours: YouTube warns it may not be captured at all. If you need an archive, configure a local recording and test it alongside the live stream. MKV is OBS’s recommended resilient recording format; plan for storage and resource use.