You can broadcast a local video as a YouTube Live stream using OBS Studio and a compatible NVIDIA GPU: add the video as an OBS Media Source, configure YouTube-compatible output with NVENC, then start the encoder and make sure the YouTube event itself is live. For a continuous loop, enable the source’s Loop option. The essential distinction is that sending video from OBS does not necessarily make a scheduled YouTube broadcast public; check the event’s Live Control Room.
Before you start
- An enabled YouTube live-streaming account and a broadcast created or scheduled in YouTube Studio.
- OBS Studio on Windows or Linux and an NVIDIA GPU whose driver and OBS installation expose an NVENC encoder.
- A local video file and a reliable upload connection capable of sustaining the selected stream bitrate.
- The event’s YouTube stream key. Treat it like a password: anyone who has it may be able to take over the stream. Keep it out of screenshots, posts and shared files. NVIDIA’s OBS guide explains the risk.
You do not need to buy a new GPU just to play a prerecorded video. OBS documents NVENC compatibility on Windows and Linux beginning with GeForce 750 Ti and 900-series Maxwell GPUs; newer generations may offer more encoder options. Check the encoder list in your installed OBS version rather than assuming every card supports every codec. OBS’s encoding guidance recommends Turing-generation NVENC or newer for best results and keeping graphics drivers current.
As an Amazon Associate I earn from qualifying purchases.
Set up the YouTube broadcast
- In YouTube Studio, create or schedule the live broadcast and open its Live Control Room.
- Copy the stream key from the event’s stream settings. In OBS, open Settings > Stream, select YouTube as the service, and enter or select the correct key. OBS labels and YouTube’s controls can change, so verify the current event settings in Studio.
- Check whether the scheduled event is set to start automatically or requires a separate manual Go Live action. A 2021 OBS community guide describes separate auto-start and auto-stop controls for scheduled broadcasts; confirm the current behavior in your account. OBS showing that it is streaming only means it is sending data—it does not prove viewers can see a live event. OBS community guide.
Add the prerecorded video in OBS
- In the OBS scene you plan to use, find the Sources dock and choose + > Media Source. Give the source a recognizable name.
- In the source properties, enable Local File and select the video. OBS lists common formats including MP4, TS, MOV, FLV, MKV, AVI, GIF and WebM, along with common audio formats. OBS Media Sources documentation.
- Enable Loop if playback should restart when the file ends. Loop is off by default. Restart playback when source becomes active is enabled by default; it helps when you switch away from the source and back.
- Use Use hardware decoding when available only as an optional source-playback setting. It is separate from NVENC, which encodes the outgoing stream.
- Check the OBS preview: the video should fit the canvas as intended, and its audio meter should respond if the file has sound. If you need an intro or holding image while a scheduled broadcast is not yet live, put that in a separate scene or delay activating the video source until the event is ready. Do not assume a file that played before the event went live will automatically restart for viewers.
Choose codec, resolution, frame rate and bitrate together
YouTube’s live ingest guidance supports H.264, HEVC and AV1. Available NVENC codecs depend on the GPU generation, driver and OBS version. NVIDIA’s January 30, 2025 guide lists H.264 and HEVC for RTX 20- and 30-series cards, and H.264, HEVC and AV1 for RTX 40- and 50-series cards. That guide recommends AV1 for YouTube on RTX 40-series hardware and HEVC otherwise; use only an encoder option that both OBS and your GPU actually offer. YouTube’s current ingest guidance remains the authority for accepted settings. NVIDIA guide; YouTube encoder settings.
In OBS, open Settings > Output and configure the streaming encoder and bitrate. Use the bitrate YouTube recommends for your chosen codec, resolution and frame rate rather than copying a setting intended for a different format. Set rate control to CBR, keyframe interval to 2 seconds (YouTube says not to exceed 4 seconds), and audio to AAC or MP3. YouTube recommends stereo AAC audio at 128 Kbps. For the video resolution and frame rate, choose the values that match the file and consult YouTube’s table; YouTube transcodes live input for viewers. YouTube’s encoder settings and bitrate table.
#1 Best Overall
- AI Performance: 767 AI TOPS
- OC mode: 2632 MHz (OC mode)/ 2602 MHz (Default mode)
- Powered by the NVIDIA Blackwell architecture and DLSS 4
- Axial-tech fan design features a smaller fan hub that facilitates longer blades and a barrier ring that increases downward air pressure
- A 2.5-slot design maximizes compatibility and cooling efficiency for superior performance in small chassis
In Settings > Stream, use the YouTube service configuration and its recommended RTMPS connection where available. RTMPS carries RTMP over an SSL connection. If configuring a custom encoder, Google’s developer documentation specifies an RTMPS URL with a valid YouTube endpoint/application path and port 443; a malformed endpoint can cause connection failures. Google RTMPS ingestion documentation.
Check upload capacity before going live. NVIDIA advises planning for a stream bitrate around 75% of measured upload speed so other applications retain bandwidth; this is vendor guidance, not a YouTube requirement. A fluctuating or shared connection may need more headroom. NVIDIA’s guide.
Rank #2
- Powered by the NVIDIA Blackwell architecture and DLSS 4
- Powered by GeForce RTX 5070 Ti
- Integrated with 16GB GDDR7 256bit memory interface
- PCIe 5.0
- WINDFORCE cooling system
Start and verify the live stream
- With the correct scene and Media Source visible, click Start Streaming in OBS when you want the feed to begin.
- Watch the YouTube Live Control Room for its preview and stream-health messages. Confirm that the right video and audio are arriving and that the broadcast has actually gone live; take any separate Go Live action required by the event.
- Monitor the stream after launch. If it is scheduled, confirm the event’s start behavior and timing rather than relying only on OBS’s connection status.
Test beforehand with representative motion and sound. A static image may not reveal issues that appear in a moving scene, and a successful connection does not establish that the correct source is playing.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Troubleshooting
- OBS says it is streaming, but viewers cannot see the broadcast: Open the event in YouTube Studio, check its preview and status, and complete any separate Go Live action. Sending encoder data and publishing the event are distinct steps.
- YouTube reports a poor or unstable stream: Compare the OBS bitrate with YouTube’s recommendation for the selected codec, resolution and frame rate. Reduce output demands if the connection cannot sustain that bitrate; check whether other devices or applications are using upload bandwidth.
- OBS cannot connect: Verify the selected YouTube service and stream key. For a custom endpoint, check the RTMPS protocol, valid YouTube path and port 443. Regenerate or replace a key if it may have been exposed.
- The video is black or the wrong file appears: Reopen Media Source properties, confirm Local File and the selected path, then check that the source is visible in the active scene.
- The video stops at the end: Enable Loop in the Media Source properties. It is not enabled by default.
- The video played before the broadcast became live: Activate the source when the event is ready or use a holding scene beforehand. With restart-on-activation enabled, switching the source inactive and then active restarts playback; verify the preview before relying on that timing.
- NVENC is missing or an encoder option is unavailable: Confirm the GPU generation, current driver and OBS version. Codec availability varies by hardware; a card that supports NVENC does not necessarily support every newer codec.
- Playback stutters while the stream is otherwise connected: Check the source’s playback and hardware-decoding settings separately from the output encoder. Hardware decoding is optional and is not the same setting as NVENC output encoding.
Copyright, reused content and live-stream suitability
Only broadcast material you have permission to use. A local file playing successfully in OBS does not establish that you own its music, footage or other rights, or that YouTube will allow the broadcast to remain available. Review the applicable YouTube rules and resolve rights for every component before scheduling a public stream. Repeating a file also does not make it original content; consider whether a loop adds meaningful value for viewers and whether the channel’s uploads comply with YouTube’s policies. Use the copyright safety checklist to review common issues before streaming.
Rank #3
- Powered by the NVIDIA Blackwell architecture and DLSS 4. System Requirements: Minimum 850W PSU with 16-pin 12V-2x6 (12VHPWR) connector required. Verify before purchasing.
- Military-grade components deliver rock-solid power and longer lifespan for ultimate durability. Compatibility: 348mm (13.7") length, 3.6 slots, 4.3 lbs. Confirm case clearance and slot spacing. GPU bracket included.
- Protective PCB coating helps protect against short circuits caused by moisture, dust, or debris
- 3.6-slot design with massive fin array optimized for airflow from three Axial-tech fans
- Phase-change GPU thermal pad helps ensure optimal thermal performance and longevity, outlasting traditional thermal paste for graphics cards under heavy loads
Or let it run in the cloud
If the goal is a YouTube channel that keeps prerecorded video live around the clock, StreamNeo can run the loop from the cloud instead of leaving a computer and OBS session on at home. Upload a recording or build a playlist, add your YouTube stream key once, then go live. StreamNeo plays uploaded videos to YouTube; it does not stream from a camera.
- Nothing at home has to stay on for the stream to continue.
- One flat price per slot covers the quality you upload, up to 4K 60fps, with no re-encode or quality tiers.
- Automatic recovery is included if YouTube drops the stream.
- The first day is free, with no card required (one free day per account).
- Monthly: $9.99 per month.
Each slot includes one always-on stream, 10 GB storage per slot pooled across active slots, 24/7 looping and playlists, and StreamNeo team support. You can pay for a day, week, month, six months or year; UPI and cards are available in India, and card checkout is available worldwide. See StreamNeo for details, or start your free day.
Quick Recap
Best Value
- Powered by the NVIDIA Blackwell architecture and DLSS 4 OC mode: 2640MHz/Default mode: 2610MHz (Boost Clock)
- Military-grade components deliver rock-solid power and longer lifespan for ultimate durability
- Protective PCB coating helps protect against short circuits caused by moisture, dust, or debris
- 3.125-slot design with massive fin array optimized for airflow from three Axial-tech fans
- Phase-change GPU thermal pad helps ensure optimal thermal performance and longevity, outlasting traditional thermal paste for graphics cards under heavy loads
Rank #4
- Powered by the NVIDIA Blackwell architecture and DLSS 4
- Powered by GeForce RTX 5060
- Integrated with 8GB GDDR7 128bit memory interface
- PCIe 5.0
- WINDFORCE cooling system
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
