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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFor a 3840×2160, 60 fps SDR stream from Linux, a practical FFmpeg starting point is NVIDIA NVENC with H.264 at YouTube’s recommended 50 Mbps, constant bitrate, a 120-frame GOP (two seconds), and RTMPS. HEVC is an alternative with a 35 Mbps recommended target. These are platform recommendations, not a guarantee that a particular GPU, driver, FFmpeg build, input, or network can sustain 4K60; check your setup and test a private stream first.
Start with this H.264 SDR command
This template targets 3840×2160 at 60 fps using H.264. Replace INPUT with your media file and the final quoted destination with the private RTMPS ingest URL and stream key supplied by YouTube. Do not share or publish the key.
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ffmpeg -re -i INPUT
-map 0:v:0 -map 0:a:0?
-c:v h264_nvenc -preset p5 -tune hq
-rc cbr -b:v 50M -maxrate 50M -bufsize 100M
-g 120 -bf 2 -profile:v high
-pix_fmt yuv420p -r 60
-c:a aac -b:a 128k -ar 44100
-f flv "RTMPS_INGEST_URL/STREAM_KEY"The command is a source-based template, not a tested universal recipe. It assumes the input has a usable video stream and, optionally, audio. The optional audio map (-map 0:a:0?) allows the command to proceed if there is no audio stream; remove it or change the mapping if your input uses a different stream layout. -re paces a file input in real time. Capture devices and other live inputs may need different input syntax and pacing.
What the important options do
-c:v h264_nvencselects NVIDIA hardware H.264 encoding;-preset p5 -tune hqis a starting point, not a promise of the best preset for every GPU.-rc cbrrequests constant-bitrate rate control.-b:v 50M -maxrate 50Mset the target and cap to YouTube’s recommended H.264 rate for 2160p60.-bufsize 100Mis an illustrative two-second live VBV buffer at that rate; YouTube does not mandate this buffer value.-g 120requests a 120-frame GOP, equivalent to two seconds at 60 fps. YouTube recommends a two-second keyframe interval and says not to exceed four seconds.-bf 2requests two B-frames, one of YouTube’s recommended advanced settings.-profile:v highselects the H.264 High profile.-pix_fmt yuv420pselects an 8-bit 4:2:0 pixel format for this SDR H.264 path;-r 60requests 60 fps output. Confirm that this matches the source and intended output.-c:a aac -b:a 128k -ar 44100encodes audio as AAC at 128 kbps and 44.1 kHz. Adjust channel layout and audio mapping to suit the actual input and broadcast.-f flvselects the streaming container commonly used with RTMP/RTMPS ingest. YouTube recommends RTMPS, a secure extension to RTMP.
Use YouTube’s primary RTMPS ingestion address and the stream name/key associated with it; those values are private and account-specific. YouTube documents how the primary RTMPS endpoint and stream name are supplied in its LiveStreams API documentation. For destination-specific encoder settings, see YouTube’s live encoder settings.
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Choose codec and bitrate for the stream
YouTube’s current recommendations for 2160p60 distinguish H.264 from HEVC and AV1. Minimum figures are not the same as recommended targets, and a bitrate target alone does not ensure a particular visual result: motion, source quality, encoder performance, and network stability all matter.
| 2160p60 path | YouTube-listed minimum | YouTube-recommended bitrate | Practical note |
|---|---|---|---|
| H.264 SDR | 14 Mbps | 50 Mbps | Use the H.264 command above as a compatibility-first starting point. |
| HEVC or AV1 SDR | 10 Mbps | 35 Mbps | Encoder support and the ingest workflow must support the chosen codec. |
The values are YouTube’s published 2160p60 ingestion recommendations, not independent quality tests or a guarantee of encoder or network capacity. See YouTube’s encoder settings page for its current guidance.
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HEVC SDR alternative
For an HEVC-capable GPU and ingest path, replace -c:v h264_nvenc with -c:v hevc_nvenc, use a profile and pixel format supported by your GPU and FFmpeg build, and set -b:v 35M -maxrate 35M. Keep CBR and a two-second GOP as a starting point. Validate the precise encoder options locally with ffmpeg -h encoder=hevc_nvenc and test before using it live.
NVIDIA’s Video Codec SDK 13.1 FFmpeg documentation includes a 4K60 HEVC live example using a 20 Mbps target, a 40 Mbps VBV buffer, GOP 120, B-frames, lookahead, and split encoding. That is an NVIDIA example, not YouTube’s destination-specific recommended rate: YouTube’s current 2160p60 HEVC target is 35 Mbps. Do not copy the lower target as though YouTube recommended it. NVIDIA’s example and encoder guidance are documented in the Video Codec SDK 13.1 FFmpeg guide.
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Use the right settings for SDR or HDR
SDR
For ordinary SDR, use a source-matched SDR workflow. YouTube lists Rec. 709 SDR and recommends the codec-specific bitrate targets above. Do not treat HDR color settings as a general quality upgrade or apply HDR metadata to SDR material.
HDR
YouTube’s cited guidance specifies HEVC for HDR, 10-bit HDR, and does not list AV1 as supported for HDR on that settings page. NVIDIA’s YouTube HDR guidance specifies HEVC Main 10 and Low or Normal latency—not Ultra Low. Use a 10-bit-capable GPU, input, pixel format, and encoding path, and preserve metadata that accurately describes the source’s transfer function and color characteristics. There is no safe set of fixed HDR flags to paste into every command: the correct signaling depends on the actual HDR source and its metadata. Consult YouTube’s encoder settings and NVIDIA’s NVENC FFmpeg guidance.
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Check Linux, GPU, FFmpeg, and input before streaming
- Verify NVIDIA visibility. Run
nvidia-smiand confirm the GPU and driver are visible. The GPU must support the codec, profile, bit depth, and resolution you plan to use; a NVIDIA brand name alone does not establish those capabilities. - Verify encoder support in this FFmpeg build. Run
ffmpeg -encodersand check forh264_nvencand/orhevc_nvenc. Then inspect available options withffmpeg -h encoder=h264_nvencorffmpeg -h encoder=hevc_nvenc. NVIDIA’s FFmpeg guidance assumes a binary built with NVIDIA hardware-acceleration support. - Inspect the input. Confirm it contains the expected 3840×2160 video, the intended frame rate, the audio stream you want, and the correct SDR/HDR characteristics. Adjust stream mapping if audio or video is not at the assumed index.
- Check ingest credentials privately. Copy the primary RTMPS address and associated stream key from YouTube’s live setup. Keep the key out of public scripts, screenshots, logs, and shared chat.
- Run a representative private test. Use footage with motion and audio similar to the planned stream. Confirm the picture, sound, keyframe cadence, stream health, and real-time encoding behavior before the event. YouTube recommends checking audio and representative motion and monitoring stream health.
Tune for real-time headroom, not just quality
NVENC preset choices trade encoding quality against available performance. The p5 preset is a conservative starting point here, not a universal optimum. If your specific GPU encodes continuously in real time with headroom, test a higher-quality preset; if it falls behind or drops frames, move toward a faster preset and retest. The feasibility of 4K60 depends on the input, GPU generation, driver, FFmpeg build, and network. The cited official guidance does not establish a model-by-model Linux benchmark or certify that every NVIDIA GPU can sustain every preset at 4K60.
YouTube recommends CBR, up to 60 fps, progressive scan, two B-frames, one reference frame, and a two-second keyframe interval (not more than four seconds). The template sets two B-frames and a 120-frame GOP, but does not explicitly set a reference-frame count; NVENC options vary by build, so inspect the installed encoder help rather than assuming a flag is accepted. YouTube’s 4K streams use normal latency in its guidance; NVIDIA treats latency tolerance separately from quality/performance choices. Avoid copying file-transcoding options into a live command without checking their effect on latency and sustained real-time encoding.
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- 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
Troubleshoot common failures
- “Unknown encoder” or an NVENC initialization error: the FFmpeg binary may lack NVENC support, the driver may not expose the GPU, or the GPU/build combination may not support the requested codec or option. Check
ffmpeg -encoders, the encoder’s help, andnvidia-smi; confirm the selected codec and profile are supported. - Frames arrive late or the encoder falls behind: the selected preset or workload may exceed real-time capacity. Try a faster preset, reduce other GPU load, and run a sustained test with representative motion. Do not assume changing the bitrate alone solves a GPU throughput limit.
- YouTube reports bitrate or stream instability: check that the command uses the intended rate control and target, that the uplink can sustain the stream, and that YouTube is receiving RTMPS at the correct ingest address. A published bitrate recommendation is not a guarantee of your network capacity.
- Stream does not start or reaches the wrong channel: recheck the private RTMPS URL and stream key in YouTube’s live setup, including which stream is active. Never expose the key when seeking help.
- Picture is wrong size or frame rate: inspect the input and output properties and confirm the actual 3840×2160, 60 fps path. The
-r 60option requests an output rate; it cannot make unsuitable source footage contain genuine 60 fps motion. - No audio, wrong audio, or silence: confirm the source audio stream and mapping. The template maps the first audio stream only if present; choose the correct stream and channel layout for your file or capture source.
- HDR looks washed out or incorrectly colored: check that the source is actually HDR, that the pipeline is 10-bit HEVC Main 10, and that color metadata matches the source. Do not add generic HDR flags to SDR or guess transfer-function metadata.
Copyright and YouTube channel rules still apply
Encoding settings do not grant rights to the video or audio you broadcast and do not guarantee monetization. Use content you own or have permission to stream, including music, and review YouTube’s live-stream and channel policies for the current requirements. Replaying a file as live content does not by itself establish that it complies with copyright rules or monetization policies. You can use StreamNeo’s copyright safety checklist as a preflight aid; it is not a substitute for permission or YouTube policy.
Or let it run in the cloud
If your goal is a YouTube channel that stays live with uploaded video, StreamNeo is a cloud alternative to keeping a Linux computer running. Upload a recording or build a playlist, add your YouTube stream key once, and go live; StreamNeo loops the uploaded video from the cloud. It does not broadcast from a camera and streams to YouTube only.
- Your computer and home connection do not have to stay on.
- Video streams as uploaded, up to 4K 60fps, with no re-encode and one flat price per slot for any quality.
- Automatic recovery if YouTube drops the stream.
- The first day is free with no card (one free day per account); billing options are a day, a week, a month, 6 months, or a year, and you can cancel any time. Every slot includes 10 GB storage, pooled across active slots, plus looping, playlists, and StreamNeo team support.
- Monthly: $9.99 per month.
See StreamNeo for details, or start the free first day.
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