For standard SDR 4K60 gaming on an RTX 4070, start with OBS’s NVIDIA NVENC AV1 encoder and P6: Slower (Better Quality). Pair it with CBR, a two-second keyframe interval and a 35 Mbps bitrate, then test under representative gameplay before treating the settings as settled.
That is a source-supported starting point, not a tested universal optimum or a promise that every RTX 4070 system will hold 4K60 smoothly. Your game, capture scene, OBS version and upload connection all affect the result. The test matters as much as the preset.
Recommended starting settings for SDR 4K60
Use this as a baseline in OBS’s output settings for a standard dynamic range (SDR) stream. Menu names can vary slightly between OBS versions, so check the current OBS NVIDIA NVENC guide if an option has moved or changed label.
| OBS setting | SDR 4K60 starting value | Why it is here |
|---|---|---|
| Encoder | Hardware (NVENC, AV1) | OBS recommends NVENC AV1 for YouTube with an RTX 40-series GPU. |
| Rate control | CBR | YouTube recommends constant bitrate for live ingest. |
| Bitrate | 35 Mbps | YouTube’s recommended AV1/HEVC rate for 4K60, subject to stable upload capacity. |
| Keyframe interval | 2 seconds | Matches YouTube’s recommendation. |
| Preset | P6: Slower (Better Quality) | OBS’s practical quality-oriented starting point. |
| Tuning | High Quality | The OBS guide’s suggested tuning for this configuration. |
| Multipass mode | Two Passes (Quarter Resolution) | A quality-oriented option in the OBS guide, with workload to test. |
| Look-ahead | On initially | OBS recommends it in the guide; turn it off if GPU utilisation is high. |
| Psycho Visual Tuning | On | Included in the guide’s starting configuration. |
| Maximum B-frames | 4 with Look-ahead on | The guide pairs these values; it suggests 2 if Look-ahead is off. |
These options are a coherent baseline, not a list of settings you must keep regardless of symptoms. In particular, the encoder competes with the game for GPU resources, so the best practical setup is the one that keeps rendering, encoding and upload delivery stable during your actual stream. OBS’s guide is a community resource last updated in 2022, and it does not report a controlled RTX 4070 benchmark proving that P6 wins in every game.
The relevant choice is not simply “highest quality”. A slower preset may ask more of the encoder, while a running game also needs the GPU to render each frame. If OBS reports rendering or encoding trouble, or YouTube flags stream health, adjust from this baseline rather than assuming the card should cope because of its model name.
Choose NVENC AV1 and the right codec path
In OBS, select Hardware (NVENC, AV1) for this SDR configuration. The OBS NVENC guide connects RTX 40-series GPUs with NVENC AV1 for YouTube, while YouTube’s live encoder requirements list AV1, H.265/HEVC and H.264 as supported ingest codecs. YouTube also specifies live frame rates up to 60 fps.
For SDR at 4K60, AV1 is the best-supported starting choice from those sources. That is not evidence of a measured quality advantage on every RTX 4070 stream: the available guidance does not provide a controlled side-by-side test across games, OBS versions and scenes. It is a practical choice supported by OBS’s RTX 40-series recommendation and YouTube’s bitrate table.
H.264 is another supported path if compatibility with your existing workflow is the priority. YouTube’s current guidance recommends 50 Mbps for H.264 at 4K60, compared with 35 Mbps for AV1 or HEVC. Those are platform recommendations, not promises of a particular visual result, and not every home upload connection can sustain either rate with enough margin for other traffic.
HDR changes the codec decision. Do not carry the SDR AV1 recommendation over to an HDR stream: YouTube says AV1 is not supported for HDR and recommends H.265 over RTMP(S), with 10-bit video for HDR. OBS’s guide likewise points to HEVC and the main10 profile for YouTube HDR. If you intend to stream HDR, use the current official guidance for that separate configuration instead of treating the SDR table above as an HDR recipe.
A codec setting does not solve every delivery problem. If you are sending from a home connection, compare the available upload headroom with the bitrate and leave room for ordinary variation. For an India-specific connection walkthrough, see setting up a YouTube 24/7 stream with JioFiber; the key lesson is to test the path you will actually use, not infer stability from a plan name.
Set rate control, keyframes and bitrate
Use CBR, or constant bitrate, as the starting rate control. It asks OBS to maintain a steadier target rate for live delivery rather than allowing the rate to swing freely with scene complexity. This does not make an unstable connection stable; it gives you a clear target to compare with your upload capacity and YouTube’s stream-health feedback.
Set the keyframe interval to 2 seconds. YouTube recommends that interval and says not to exceed four seconds. A keyframe provides a reference point for decoding; keeping the interval aligned with the platform guidance is preferable to guessing at a longer interval for a live stream.
At 4K/2160p and 60 fps, YouTube recommends 35 Mbps for AV1 or HEVC and 50 Mbps for H.264, as listed in its live encoder guidance accessed in October 2026. These figures are YouTube recommendations, not bitrate guarantees and not claims that a stream at the recommended rate will look identical in every game. The AV1/HEVC recommendation is the one to use for the baseline in this article.
Check upload stability before going live at that target. A speed test taken once is only a snapshot; other devices, Wi-Fi conditions and service variation can change what remains available during a stream. Where possible, test from the same computer, network connection and time-of-day conditions you expect to use. If the line cannot sustain the recommended target reliably, do not force the setting simply to match a table. Reassess resolution, frame rate or connection conditions and run another private or unlisted test.
For a continuous channel, the distinction between local encoding and a persistent broadcast also matters. A home PC can produce a stream while it is running, but it still depends on that PC and connection staying available. If your content is a pre-recorded loop rather than live gameplay, the Linux VPS guide for a continuous pre-recorded stream explains a different operating approach; its needs are not a reason to copy a gaming preset into a non-gaming workflow.
Apply quality, multipass and B-frame options
Set the preset to P6: Slower (Better Quality) and tuning to High Quality as the initial OBS NVENC configuration. “Slower” describes a preset choice, not a guaranteed outcome for viewers. It is a quality-oriented starting point from OBS’s guide, and the system still has to render the game, capture the scene and encode frames at the same time.
Use Two Passes (Quarter Resolution) for multipass initially. Multipass gives the encoder an additional analysis pass, but it also contributes to the total work being done. Do not assume that each quality-oriented option is free simply because the encoding is hardware accelerated. What matters is the combined load in the game and scene you will stream.
Turn on Look-ahead and Psycho Visual Tuning for the initial test. OBS’s guide includes both in its suggested configuration. The same guide advises disabling Look-ahead if GPU utilisation is high. If you turn Look-ahead off, set maximum B-frames to 2 rather than four, following the guide’s pairing; with Look-ahead on, begin at 4.
Do not select Ultra High Quality tuning as a blanket gaming recommendation. OBS’s advanced NVENC options caution against that tuning for gaming because it significantly reduces throughput. The same article describes split encode as requiring two or more Ada NVENC engines, which it says are available on the RTX 4070 Ti or higher; do not treat split encode as an ordinary RTX 4070 feature.
Option names and availability can change across OBS releases. If your version presents different choices, use the current OBS documentation and avoid substituting an unfamiliar “maximum quality” option without testing. For a wider explanation of the encoder family and when hardware encoding helps, see what NVIDIA NVENC does for streaming.
Check GPU headroom under gameplay load
The RTX 4070 is doing more than encoding. A demanding game, high frame rate, complex OBS scene, browser sources, alerts and capture processing may all add GPU work. If the game leaves little room for OBS to render its own scene, you can see rendering lag even when the encoder itself is capable of AV1 output. If encoding falls behind, the stream can suffer in a different way.
Test the exact game and scene you plan to broadcast. Use a representative section with rapid camera movement, busy effects, the usual overlays and your intended audio sources. A quiet menu screen is not a useful stand-in for a difficult gameplay sequence. Watch OBS’s statistics for rendering lag and encoding lag, and watch YouTube’s stream health while the test is running.
If the system struggles, first reduce the load that is not essential to the stream. Cap the game’s frame rate or lower graphics settings, then test again. OBS’s guide specifically points to reducing GPU load, including lowering game frame rate or graphics settings, and suggests disabling Look-ahead when GPU utilisation is high. You can also compare with a less demanding combination of options, changing one setting at a time so you know what helped.
Do not treat a momentary clean result as proof that an overnight stream will remain clean. Repeat the test during the kind of gameplay you actually expect and leave it running long enough to reveal recurring issues. A short test cannot account for every later network or system interruption, but it is still more informative than going live without checking.
For a 24/7 pre-recorded channel, there may be no gameplay load at all, but the machine still has to keep its source and broadcast running. An OBS promotion playlist after a Windows update is a useful example of why operating-system and restart behaviour belong in a long-running setup plan, separately from encoder quality.
Run a representative YouTube test
Before the public stream, create a private or unlisted test and send the same resolution, frame rate, audio mix and motion profile you expect to use. YouTube advises testing with similar audio and movement and monitoring stream health. Its documentation also notes that 4K live streams are optimised for quality at normal latency; the low-latency option is not available at 4K. If low latency is central to your format, that is a trade-off to consider before settling on 4K.
During the test, check both sides of the chain. In OBS, look for rendering or encoding lag. In YouTube Live Control Room, check stream health and any warnings about the incoming signal. Listen to the audio and inspect the picture on a separate playback device if practical; a preview in OBS does not confirm what viewers receive after ingest and playback processing.
If YouTube reports bitrate instability, verify the connection before lowering encoder quality. If OBS shows rendering pressure, reduce the game’s frame rate or graphics load. If high GPU utilisation coincides with problems, disable Look-ahead and retest with two B-frames. If the upload path cannot support the 4K60 target consistently, change the stream plan rather than repeatedly toggling encoder settings without a clear diagnosis.
Keep a note of the test’s OBS version, codec, target bitrate, game, scene and result. That makes later troubleshooting useful: you can distinguish a change in a game update or capture scene from a change in the encoder configuration. Recheck YouTube’s current ingest guidance before a major event, since platform requirements can change.
When the stream is a fixed video loop rather than a gameplay broadcast, a local gaming PC may be solving a different problem than you have. StreamNeo can take away the need to leave your computer running for an uploaded-video 24/7 YouTube broadcast, which is a separate use case from encoding live 4K60 gameplay on your RTX 4070.
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
Is P6 the best preset for every RTX 4070?
No. P6: Slower (Better Quality) is the OBS-guide-supported starting point used here, not the result of a universal RTX 4070 benchmark. Test your actual game and scene, then reduce GPU load or change options if OBS or YouTube reports problems.
Should I use AV1 for an HDR stream?
Not for YouTube HDR based on the current guidance: YouTube says AV1 is not supported for HDR and recommends H.265/HEVC over RTMP(S). The AV1 settings in this article are for standard SDR, not an HDR configuration.
What bitrate should I enter for 4K60?
For AV1 or HEVC, YouTube recommends 35 Mbps; for H.264, it recommends 50 Mbps at 4K60. These are platform recommendations, so check whether your upload connection can sustain the target reliably and verify stream health in a test.
What should I change if the game stutters or OBS lags?
Lower the game’s frame rate or graphics load and test again. If GPU utilisation remains high, disable Look-ahead; with it off, use two B-frames as the OBS guide suggests. Change one thing at a time and observe both OBS statistics and YouTube stream health.