For a 24/7 YouTube stream from OBS, choose an NVIDIA NVENC encoder your GPU and OBS build expose, use a YouTube-supported codec, set CBR and a two-second keyframe interval, and select a bitrate from YouTube’s live table for your resolution and frame rate. Then test with the real video and audio, leave upload headroom, and watch stream health before trusting the setup unattended.
There is no universal best NVENC preset or bitrate. The right configuration depends on the GPU generation, OBS version, codec, scene workload, output settings and the upload connection available at the streaming location.
Confirm NVENC is available in OBS
Open OBS and check Settings → Output. If Output Mode is set to Simple, switch to Advanced so the streaming encoder and its controls are visible. In the encoder menu, select an NVIDIA NVENC option that is actually offered by your installed OBS build; its label and available controls can vary with OBS version, operating system and GPU.
NVENC is NVIDIA’s dedicated hardware video encoder. It can move video-encoding work away from the CPU, but that does not mean every NVIDIA card supports every codec or that the GPU has unlimited capacity. NVIDIA’s NVENC documentation describes codec support by GPU generation. Check your exact card against the codec you plan to send, rather than assuming that a newer OBS installation adds hardware capabilities the card does not have.
In OBS, make sure the chosen encoder is attached to the Streaming output, not only to recording. OBS can use separate settings for those outputs. If you record a local copy at the same time, that may add work or use different settings, so include it in your test rather than measuring the stream configuration alone.
A dedicated encoder does not do the entire job of rendering a scene. OBS still needs to compose sources such as video, images, text, browser elements and overlays. A scene can therefore render poorly even when the encoder itself is not overloaded. If you are deciding between a local GPU-based workflow and another way to keep a video loop live, the practical trade-offs in keeping a 24/7 kirtan stream running on a cloud VPS are useful context; the right choice depends on whether you want to maintain a local machine and network connection.
Choose a YouTube-supported codec
For a straightforward SDR stream, H.264 is a sensible starting point because it is widely supported by streaming tools and ingest workflows. In OBS, choose the NVENC H.264 encoder if it is available. YouTube supports H.264, HEVC/H.265 and AV1 for encoder-based live streams, but support at both ends matters: your GPU must encode the codec, and your selected YouTube ingest workflow must accept it.
YouTube recommends RTMPS for encoder streams. Its live encoder settings list supported codecs and ingest guidance. RTMPS protects the stream in transit to and within Google’s servers. Use the server and stream key shown in YouTube Studio, and keep the key private. The streaming software does not make a codec suitable merely because it appears in a drop-down menu; check the current YouTube guidance and the capabilities of your card.
AV1 or HEVC can be useful where the GPU, OBS and ingest path support them and their YouTube bitrate recommendations better suit the target output. They are not automatic quality upgrades for every channel. A codec change alters compatibility and bitrate expectations, and viewers’ devices and YouTube’s delivery process are separate from the encoder-to-YouTube ingest connection.
Do not carry an SDR recipe over unchanged if your stream is HDR. YouTube’s HDR live streaming guidance calls for a different workflow, including HEVC, 10-bit video and HDR colour settings. Check the current instructions for the chosen ingest method and the applicable OBS version before configuring HDR. If your content is a regional video loop with mixed source aspect ratios, first make the canvas and scaling decisions deliberately; this OBS aspect-ratio guide for recorded regional videos covers that separate part of the setup.
Set rate control and keyframe interval
For YouTube Live encoder ingest, set Rate Control to CBR, or constant bitrate. CBR aims to keep the outgoing video bitrate near the value you set. That gives the ingest connection a more predictable stream than a mode that varies bitrate substantially with scene complexity. It does not mean the stream will use precisely the same data every moment, nor does it prevent network congestion or encoding overload.
Set Keyframe Interval to 2 seconds. YouTube recommends this interval and specifies a maximum of four seconds in its live encoder guidance. Keyframes provide reference points in the video stream; following YouTube’s interval recommendation helps keep the encoder configuration aligned with its ingest expectations. Do not confuse live ingest instructions with YouTube’s advice for uploading a finished video file, which is a different workflow.
In OBS, the control may be labelled Keyframe Interval or Keyframe Interval (seconds). Enter 2 if the setting is exposed. If your encoder has advanced fields for profile, B-frames or other parameters, avoid changing several at once just because they are available. Start with the codec and ingest requirements, then test the advanced configuration against the actual workload.
A CBR value is not a guarantee of picture quality. If the chosen bitrate is too low for fast movement, fine detail or camera noise, the video can look poor even though OBS reports that it is sending at the selected rate. If it is too high for the upload connection, data can be delayed or dropped before reaching YouTube. Bitrate and connection capacity have to be considered together.
Select bitrate for resolution and frame rate
Use the row that matches your codec, resolution and frame rate in YouTube’s current live encoder table. The examples below are recommendations listed by YouTube for encoder ingest; they are not minimum upload speeds, promises of quality, or values that suit every source. Verify the live page before making a production change because platform guidance can change.
| Output | AV1 or HEVC recommended bitrate | H.264 recommended bitrate |
|---|---|---|
| 1080p30 | 10 Mbps | 14 Mbps |
| 1080p60 | 12 Mbps | 17 Mbps |
| 1440p30 | 15 Mbps | 21 Mbps |
| 1440p60 | 24 Mbps | 34 Mbps |
| 2160p30 | 30 Mbps | 42 Mbps |
| 2160p60 | 35 Mbps | 50 Mbps |
For example, if you are sending H.264 at 1080p60, YouTube’s listed recommendation is 17 Mbps. At 1080p30, its H.264 recommendation is 14 Mbps. Do not use the 1080p60 number simply because the channel is described as “1080p”; the frame rate changes the relevant row. Likewise, a 1440p or 2160p target has a different bitrate recommendation. Choose the output you can sustain and that your source material genuinely needs.
A devotional channel showing a largely static image with gentle transitions may not benefit from increasing resolution or frame rate beyond the source material. A local news loop with moving footage, scrolling text and frequent cuts has a different visual workload. YouTube’s table is a useful ingest target, but the actual image depends on content, encoder behaviour and delivery. If you are building a channel around a repeating devotional programme, the practical considerations in creating a 24/7 Sufi qawwali and devotional music stream can help you think through the content side as well as the encoder settings.
Use the bitrate for your selected codec, not the H.264 figure by habit if you have deliberately chosen HEVC or AV1. Also account for audio and any other outbound traffic when judging whether the connection has room. YouTube’s encoder table is about the video encoding recommendation; your available upload capacity must support the whole stream in real conditions.
Check upload headroom and stream health
Measure upload performance at the location and time where the stream will run, preferably more than once. A speed test is a snapshot, not a guarantee that your connection will maintain the same throughput overnight. Other devices, Wi-Fi interference, ISP congestion and network equipment can affect the upload available to OBS. If practical, use a wired connection and avoid relying on the headline speed printed on a broadband package.
YouTube advises that the stream’s total bitrate fit within available upload bandwidth and recommends leaving 20% headroom. Treat that as a planning margin, not spare capacity to fill with more video bitrate. For example, a connection that barely reaches the stream’s total target during a quiet test is a poor basis for leaving a 24/7 broadcast unattended. The channel may look healthy in a short preview and still encounter congestion later.
Before going live, open YouTube Studio’s live control room and watch the stream health indicators and messages. In OBS, keep an eye on dropped frames caused by network conditions and on encoder or rendering lag. These indicators point to different problems. Network-dropped frames suggest the connection or route to ingest needs attention; encoder overload or render lag suggests the system cannot keep up with the scene or settings. A single setting change may not address both.
When health deteriorates, reduce demands methodically. Check that another device or upload is not using the connection, confirm the selected resolution and bitrate, and inspect OBS statistics. If encoding or rendering is the issue, simplify the scene or choose a less demanding preset before considering a lower output. If the network is the issue, a lower bitrate may be appropriate, but select it with the current YouTube recommendation and resulting picture quality in mind. Keep notes on the change and observe the stream again.
For a channel that must continue while your computer is switched off, the failure mode is different from a locally hosted OBS stream: StreamNeo turns an uploaded video into a YouTube live stream, so you do not have to keep a local encoder and home upload connection running through the night. The trade-off is that this described workflow is for video files and YouTube, rather than a live scene assembled from your local OBS sources.
Choose an NVENC preset your system can sustain
Presets trade encoding quality and complexity against the work the system must sustain. NVIDIA’s OBS broadcasting guide names P6 as a starting point and discusses Look-ahead and Psycho Visual Tuning. Treat that as vendor guidance to test, not a universal prescription. Preset names and available controls can differ by encoder version and OBS build.
Look-ahead uses CUDA resources. NVIDIA advises disabling it if GPU utilisation is high. This matters when OBS is rendering a detailed scene while a game, animation or other GPU task is also active. A preset that looks fine in a brief test may encounter trouble after sources change or the system warms up. Watch actual GPU usage and OBS statistics during a representative run, rather than choosing the slowest-looking preset and assuming that the dedicated encoder removes all GPU constraints.
Psycho Visual Tuning may be worth testing, but judge the result on your own material. A static altar image with a slow dissolve is not a fair test for a scene with moving footage, ticker text and frequent transitions. If the stream shows encoder overload, first simplify the workload or step back to a less demanding configuration. The goal is a stream that maintains acceptable image quality over time, not a peak-quality setting that the system cannot hold.
If you are comparing hardware, check the card’s supported NVENC codecs and whether it has enough capacity for your intended resolution, frame rate and scene workload. There is not enough information in a model name alone to choose a GPU for every 24/7 channel: budget, current computer, resolution target and software all matter. Do not buy a card on the assumption that any NVENC-capable model can sustain every combination.
Test representative video and audio
YouTube recommends testing before a live stream, previewing the result and checking stream health. Make the test resemble the real channel. Include the busiest footage, transitions, overlays and audio that will actually be used. If the intended stream contains a repeating loop, play enough of it to see how different scenes behave; a still frame is not a useful encoder test for material with motion.
Listen through the audio as well as watching the preview. Check that the source is present, levels are sensible, speech or music is not distorted, and transitions do not produce gaps or jumps. YouTube’s advanced live settings list AAC or MP3 audio and 128 kbps for stereo audio. Set a supported format in OBS and confirm the result in the YouTube preview; do not assume a healthy video indicator means the audio path is correct.
For SDR, YouTube lists progressive scan, Rec. 709 colour and 8-bit video among its advanced settings. Match the OBS output to the intended SDR workflow and avoid accidental mismatches between sources and output colour settings. If the stream is meant to be HDR, follow the separate HDR instructions instead of mixing in SDR assumptions.
A test for a 24/7 channel should run long enough to expose problems that a quick preview will miss. In addition to the picture and sound, check temperatures, power continuity, network behaviour, and whether the scene recovers after a source interruption. If you plan to record locally, verify that the resulting file plays and has usable audio. These are practical checks for unattended operation, not a claim that YouTube requires one particular test duration.
Before leaving the stream alone, confirm that the correct event or stream is accessible to its intended audience, the stream health is acceptable, and you know where to look if OBS or YouTube reports a problem. A written checklist helps when someone else has to restart or inspect the channel. For unexpected stops and recovery checks, this guide to what to check after a YouTube stream ends unexpectedly covers a related operational situation.
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
What bitrate should I use for 1080p60 YouTube Live?
Use the current YouTube live encoder table for your codec. Its listed recommendation is 17 Mbps for H.264 at 1080p60, and 12 Mbps for AV1 or HEVC at the same output. You still need enough upload capacity for the total stream bitrate with headroom, and the recommendation is not a guarantee that your connection can sustain it.
Should I use NVENC H.264, HEVC or AV1?
For a straightforward SDR setup, H.264 is a broadly supported starting point. HEVC and AV1 are alternatives if your GPU and OBS expose them and your YouTube ingest workflow supports the chosen codec. Check the GPU generation and YouTube’s current live guidance before switching.
Is P6 the right preset for every NVIDIA GPU?
No. NVIDIA’s OBS guide names P6 as a starting point, but scene complexity, concurrent GPU work and GPU generation affect whether it is sustainable. Test representative content and reduce the workload or preset demands if you see encoder overload or render lag.
Can I use this SDR configuration for HDR?
Not unchanged. YouTube’s HDR workflow uses different codec, bit-depth and colour requirements, and its instructions vary by ingest path. Follow the current official HDR guidance for your OBS version and stream-key workflow.