For YouTube Live at 4K/2160p and 60 fps, start with 50 Mbps for H.264 or 35 Mbps for H.265/HEVC or AV1. In OBS, pair that bitrate with CBR and a 2-second keyframe interval, then test the complete setup before relying on it for an event or an always-on channel.
Those are YouTube’s recommended ingest settings, not guarantees that your connection or encoder will sustain the stream. YouTube also lists lower minimums, but a minimum is not a sensible target for a demanding 4K60 broadcast.
Confirm that the output is really 4K60
Before changing bitrate, check what OBS is sending. Open Settings → Video and confirm that the Output (Scaled) Resolution is 3840×2160 and that the frame rate is 60 fps. OBS separates the base canvas resolution from the output resolution, so a 4K source can still be sent as a smaller stream if the scaled output is set lower.
The base canvas is the workspace in which OBS arranges sources. The output resolution is the size of the frames encoded for YouTube. If you are capturing a 4K game, camera, or pre-recorded video, both may reasonably be 3840×2160. If your sources have different dimensions, choose the output deliberately rather than assuming that a 4K source automatically produces a 4K broadcast.
Also check the frame-rate setting. A 60 fps output sends twice as many frames per second as a 30 fps output. That can make movement look smoother, but it also gives the encoder more work and can increase the demands on the computer. OBS notes that 60 fps may use more system resources than 30 fps, so confirm that the selected frame rate matches the content and the hardware.
For a lecture, devotional loop, or ambience channel with little movement, 30 fps may be a more practical choice if 60 fps is causing rendering or encoding problems. That is a change to the intended output, not a reason to keep calling the stream 4K60. If the channel’s purpose depends on smooth motion, set 60 fps and validate it under the same scene complexity you will use live.
If your source is a collection of pre-recorded files, resolve the video format before you configure OBS. The guide to looping videos in a 24/7 YouTube livestream covers the content side of that problem, while this article focuses on the encoded live output.
Choose a codec OBS and your hardware can actually use
YouTube lists H.264, H.265/HEVC, and AV1 as supported live ingest codecs, using RTMP or RTMPS. The codec affects the recommended bitrate, but the lowest bitrate is not automatically the best choice. OBS must expose the codec, and your computer or hardware encoder must be able to encode it continuously at 3840×2160 and 60 fps.
H.264 is the familiar choice and is often the easiest starting point when compatibility matters. YouTube’s 4K60 recommendation is higher for H.264 than for H.265/HEVC or AV1. That does not mean H.264 is better in every setup. It means YouTube’s ingest guidance assigns different recommended bitrates to the codec groups.
H.265/HEVC and AV1 have lower YouTube recommendations for this resolution and frame rate. They may therefore reduce the required upload capacity compared with the H.264 recommendation, but only if OBS and the installed encoder can sustain the selected codec. A codec that saves network capacity but overloads the encoder is not a useful trade.
Look through Settings → Output → Streaming and inspect the encoder choices available in your installation. Menu wording and available choices vary by OBS version, operating system, and installed hardware. Do not select a codec based only on a name seen in a tutorial. Confirm that the encoder is available on the machine you will use for the broadcast.
For HDR, YouTube’s guidance recommends H.265 over RTMP(S) and says AV1 is not supported for HDR. If HDR matters to your production, check YouTube’s current live encoder guidance before choosing the codec and transport. The official YouTube live encoder settings guide is the source to revisit because live ingest requirements can change.
The choice can be expressed simply:
| Ingest codec | YouTube 4K/2160p 60 fps recommendation | Listed minimum | What to confirm first |
|---|---|---|---|
| H.264 | 50 Mbps | 14 Mbps | The encoder and upload connection can sustain the higher target |
| H.265/HEVC | 35 Mbps | 10 Mbps | OBS and the hardware support HEVC encoding continuously |
| AV1 | 35 Mbps | 10 Mbps | OBS and the hardware support AV1, and the stream does not require HDR |
The minimum figures in the table are YouTube’s listed minimums, not recommended operating targets. They should not be used to imply that a particular picture will remain stable or look good at that rate.
Set the bitrate for the selected codec
For H.264 at 4K60, enter 50,000 Kbps in OBS. For H.265/HEVC or AV1 at 4K60, enter 35,000 Kbps. YouTube gives these figures in Mbps, while OBS commonly displays the field in Kbps. Using 1 Mbps as 1,000 Kbps, 50 Mbps becomes 50,000 Kbps and 35 Mbps becomes 35,000 Kbps.
These are starting points based on YouTube’s official ingest table. They are not a promise that the stream will remain healthy at that setting. Your upload connection needs to maintain the outgoing stream, and the encoder needs to produce frames without falling behind. A speed test that briefly reaches a number is not the same as a connection that sustains a demanding broadcast.
Do not substitute the listed minimum of 14 Mbps for H.264 or 10 Mbps for H.265/AV1 simply because the lower figure is easier to upload. YouTube lists those values as minimums. A minimum can help describe the ingest range, but it does not become a recommended 4K60 configuration.
If the recommended setting is not sustainable, make a controlled change. You might lower the bitrate, reduce the output frame rate, or reduce the output resolution, depending on what the channel needs most. If the connection is the limiting factor, lowering bitrate can address connection-related dropped frames. If the encoder is overloaded, a network change alone will not solve it.
You should also separate the bitrate from the source file’s own quality. A high-quality 4K file does not force the live encoder to use a particular bitrate, and a high live bitrate cannot restore detail that was absent from the source. The stream is shaped by the source, the output settings, the codec, the encoder, and the delivery connection together.
For practical planning, write down the chosen codec, output resolution, frame rate, and bitrate before you test. This avoids a common failure mode in which the settings are changed repeatedly and nobody can tell which combination was actually validated. If you are comparing local OBS with a cloud workflow, start with the best software for streaming pre-recorded videos to YouTube Live and then compare the responsibilities of each setup.
Use CBR and a 2-second keyframe interval
In OBS’s streaming output settings, select CBR, or constant bitrate, for the video bitrate mode. YouTube recommends CBR for live ingest. It keeps the encoded stream within a more predictable delivery pattern instead of allowing the bitrate to vary widely with complex scenes.
Set the keyframe interval to 2 seconds. YouTube recommends a 2-second interval and says not to exceed 4 seconds. In practical terms, a 2-second interval means the stream regularly inserts a complete reference frame, giving the receiving platform points from which to decode the following frames.
If OBS uses a field labelled Keyframe Interval, enter 2. Do not confuse this with the frame rate. At 60 fps, a 2-second keyframe interval is still two seconds; it is not a setting of 2 frames. The exact control layout can vary with OBS and the selected encoder, so confirm the label rather than copying a value into an unrelated field.
The same principle applies when you change codec. H.264, H.265/HEVC, and AV1 have different encoding characteristics, but the YouTube guidance for this 4K60 setup still points to CBR and a 2-second keyframe interval. If the selected encoder exposes additional controls, leave them at sensible defaults unless you have a reason to change them and can test the result.
Use RTMPS where it is available for the YouTube ingest connection. YouTube recommends RTMPS for live ingest. Keep the stream key private, and paste it only into the streaming software or service you have chosen. You can review how YouTube stream key privacy works before sharing access with another person who helps manage the channel.
Check OBS output and upload stability
There are two separate questions to answer during a test. First, can OBS render and encode the frames quickly enough. Second, can the connection deliver the encoded data to YouTube without falling behind. A clean result requires both.
Watch OBS’s status information while the test runs. Rendering or encoding warnings point towards local processing pressure. Dropped frames caused by the connection point towards delivery trouble. OBS’s stream connection troubleshooting guide explains that dropped frames can indicate an unstable connection or a bitrate the connection cannot keep up with.
Start with the upload connection you will use for the actual broadcast. If the event will run over a particular Wi-Fi network, mobile connection, or broadband line, test that path rather than relying on a different connection elsewhere. A wired connection may remove one source of variation, but it does not repair an overloaded upload service or an encoder that cannot keep up.
Do not treat the headline result from an upload speed test as a guarantee. The test is a snapshot, while a live channel needs a sustained outgoing connection. Other people using the same network, scheduled backups, cloud synchronisation, and changes in mobile signal can all affect the available capacity. Leave room for those conditions rather than planning around the last fraction of the measured speed.
YouTube also recommends testing with audio and motion similar to the planned stream. A static devotional image is not a demanding test for a fast-moving game capture. A lecture with slides does not exercise the encoder in the same way as a camera scene with movement, overlays, and transitions. Build a test scene that resembles the real broadcast.
For a 24/7 channel, consider the operating burden as well as the initial picture. A local computer must remain powered, connected, and available for the entire run. If your priority is to upload the file once and let a YouTube-only channel continue while your computer is switched off, StreamNeo removes that local-machine obligation and monitors the broadcast for automatic restarts when it drops, without giving you OBS controls.
That is a different operating model from OBS. OBS is useful when you need live scenes, cameras, interactive sources, or detailed local production control. A file-based cloud workflow is more relevant when the source is prepared in advance and the main concern is keeping the channel running without leaving a personal computer on.
Run a realistic test stream before going live
Create a private or unlisted YouTube test and let it run with the same OBS profile you intend to use. Confirm the output resolution, frame rate, codec, bitrate, CBR mode, keyframe interval, audio, and ingest protocol before you start. If you change any of those items after the test, repeat the test rather than assuming the change is harmless.
Use representative movement and audio. Include the busiest scene, the most complex overlay, and any transition that will appear during the broadcast. If the channel is a pre-recorded loop, test the actual file or a section with similar motion. YouTube’s guidance is to test before starting and to use audio and motion similar to the planned stream.
During the test, watch both OBS and YouTube’s stream health information. Look for dropped frames, encoder overload, unstable upload behaviour, delayed audio, or a picture that does not match the intended output. YouTube transcodes live streams into multiple output formats for viewers, so your own 4K source is not the only version that the audience may receive.
If the test shows connection-related dropped frames, reduce the bitrate and test again, or reduce the output quality if that is the more useful compromise. If the test shows encoder or rendering pressure, investigate the selected encoder, scene complexity, frame rate, and resolution. Do not keep changing the network setting when the evidence points to local processing.
Record the final working profile. Note the OBS version, operating system, selected encoder, codec, resolution, frame rate, bitrate, keyframe interval, and connection used for the test. This makes it easier to restore a known configuration after an update or to explain the setup to someone helping with the channel.
If the stream is part of an always-on project, a 4K60 profile may not be the right profile for every piece of content. The guide to keeping a 4K 60fps YouTube Live stream running 24/7 is useful for considering the longer operating routine, including what happens when the local setup needs attention.
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 YouTube 4K60 in OBS?
YouTube’s recommended starting point is 50 Mbps for H.264 and 35 Mbps for H.265/HEVC or AV1 at 4K/2160p and 60 fps. In OBS, enter those as 50,000 Kbps or 35,000 Kbps respectively, then test whether your encoder and upload connection can sustain the stream.
Can I use YouTube’s minimum bitrate instead?
YouTube lists 14 Mbps as the H.264 minimum and 10 Mbps as the H.265/AV1 minimum for 4K60. Those are minimums, not recommended targets, and they do not guarantee stable delivery or a particular picture quality.
Which OBS settings should accompany the bitrate?
Use CBR and a 2-second keyframe interval, and use RTMPS where available. Confirm that the selected codec is supported by the OBS installation and hardware, then test with motion and audio similar to the real broadcast.
Why is my 4K60 stream dropping frames?
Dropped frames may indicate that the upload connection is unstable or cannot sustain the selected bitrate. OBS also has separate rendering and encoding limits, so check whether the problem is network delivery or local processing before changing settings, then test again after making one controlled change.