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What settings should you use?
YouTube’s published live-encoder recommendations vary by codec, resolution, and frame rate—not by spoken language. A Hindi devotional recording, music video, or other Hindi-language program uses the same encoder guidance as comparable material in another language. The right profile depends on the source video and whether your connection can sustain its bitrate without interruption. YouTube lists H.264, H.265/HEVC, and AV1 for live ingest up to 60 fps; check that your FFmpeg build and YouTube stream configuration support the codec you choose. YouTube’s encoder settings and bitrate guidance includes codec-specific recommendations.
| Profile | YouTube H.264 bitrate recommendation | When it may fit |
|---|---|---|
| 720p30 | 6 Mbps | Useful when the source is 720p or conserving upload capacity matters more than finer detail. |
| 1080p30 | 10 Mbps | Useful for a 1080p source when the connection can sustain the higher bitrate with headroom. |
These are YouTube recommendations, not guarantees of picture quality or uninterrupted delivery. Do not upscale lower-resolution footage just to select a larger output setting. Compare the source’s detail and motion with available bandwidth and encoder load, then test the result. Keep a margin above the target bitrate for network overhead and fluctuations; a speed test is a useful check, but it does not guarantee the connection will remain stable for a continuous stream.
Prepare YouTube Live and protect the stream key
- In YouTube Studio, open Live Control Room and create or select the broadcast. Configure the stream and obtain the server URL and stream key shown for that destination.
- Use the RTMPS server URL when YouTube provides it. YouTube recommends RTMPS, its secure extension to RTMP. Read YouTube’s RTMPS guidance; FFmpeg’s protocol documentation describes RTMPS as RTMP over secure SSL.
- Treat the stream key like a password: do not publish it, include it in screenshots, or share it in a command that others can read. YouTube explains where to enter the stream URL and key in its stream settings guidance.
FFmpeg command for a file-based stream
This H.264 template reads a local video, encodes it as 1080p30 CBR, encodes stereo AAC, and sends it to YouTube over RTMPS. Replace the placeholders with your actual input path and RTMPS destination. The example assumes the file has audio and can be converted to 30 fps; inspect your input and installed FFmpeg build before using it.
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ffmpeg -re -i "input.mp4"
-map 0:v:0 -map 0:a:0
-vf "scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2,fps=30"
-c:v libx264 -preset veryfast -pix_fmt yuv420p
-b:v 10M -minrate 10M -maxrate 10M -bufsize 20M
-g 60 -keyint_min 60 -sc_threshold 0
-c:a aac -b:a 128k -ar 44100 -ac 2
-f flv "YOUR_RTMPS_URL/YOUR_STREAM_KEY"FFmpeg options apply to the next input or output, so input options such as -re go before -i, while encoding and muxing options go before the output URL. The -g 60 and -keyint_min 60 values set a 60-frame keyframe interval at 30 fps—two seconds. YouTube recommends a two-second keyframe interval and says not to exceed four seconds. Its advanced settings list 44.1 kHz and 128 kbps for stereo audio. The command’s scale-and-pad filter preserves aspect ratio while fitting the frame to 1920×1080; it can add black bars when the source has a different shape.
For 720p30, change the filter dimensions to 1280×720 and set -b:v, -minrate, and -maxrate to 6M; retain the 60-frame keyframe interval. These examples use H.264. If you choose HEVC or AV1, use the corresponding YouTube bitrate table and confirm support in your FFmpeg build and destination settings rather than reusing H.264 figures.
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Check the source and FFmpeg build
- Run
ffmpeg -versionto check the build andffmpeg -i "input.mp4"to inspect the file’s streams, dimensions, frame rate, and audio. - If the file has no audio stream, remove
-map 0:a:0and the audio options, or provide an appropriate audio source. If it has multiple audio tracks, select the intended track deliberately. - If the installed build does not include
libx264, choose an encoder available in that build and verify its settings and YouTube compatibility; encoder names and options depend on how FFmpeg was compiled. - If the source is interlaced, has unusual frame timing, or should retain a frame rate other than 30 fps, adapt the filter and keyframe interval to the source and target profile rather than applying this template unchanged.
Make a stream run continuously
A successful FFmpeg start is not a guarantee of 24/7 service. A single input file reaches its end; an internet interruption, host reboot, process crash, or YouTube-side disconnect can also stop delivery. Plan how the input repeats, how a failed process restarts, and how someone will notice a problem.
Loop a video file
To repeat one file, place -stream_loop -1 before its input:
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ffmpeg -stream_loop -1 -re -i "input.mp4" ... "YOUR_RTMPS_URL/YOUR_STREAM_KEY"Retain the encoding options from the earlier example in place of the ellipsis. A hard cut at the loop point is possible, especially if the audio or video does not end cleanly. For multiple videos, assemble a compatible playlist or use an input/playlist method appropriate to your files; verify that transitions, audio levels, and duration behave as intended before relying on it.
Plan for disconnects and host failures
FFmpeg documents a FIFO muxer example for continuing real-time processing through temporary network failures and attempting recovery. Behavior depends on the FFmpeg build and configuration; it does not guarantee recovery from every network, host, or YouTube failure. See the FFmpeg FIFO muxer documentation. For a dependable unattended setup, test the exact command and recovery behavior, arrange for the process to restart after a crash or reboot, and monitor YouTube’s stream health and host/network status.
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YouTube recommends testing with audio and movement similar to the actual stream, then watching stream health and messages. A wired Ethernet connection can be a useful optional choice for a fixed streaming computer, but it is not a YouTube requirement. YouTube’s encoder setup help says streams under 12 hours are automatically archived; do not assume a single uninterrupted 24-hour broadcast will be archived as one complete video. See YouTube’s stream-duration guidance.
Troubleshoot common FFmpeg and YouTube Live problems
| Symptom | Likely cause | What to check or change |
|---|---|---|
| FFmpeg cannot connect or YouTube does not receive video | Incorrect server URL or key, unsupported ingest URL, or a network/TLS problem. | Copy the current destination from Live Control Room, use the provided RTMPS URL, check outbound connectivity, and keep the key private. Confirm that the command’s final output URL is correctly quoted. |
| Video buffers, drops frames, or stream health degrades | Upload capacity is insufficient or unstable, or the encoder cannot keep up. | Check sustained upload performance while streaming; lower resolution or bitrate if needed, and verify CPU load. Test with representative motion rather than a static frame. |
| Wrong size, bars, stretching, or poor detail | Output filter does not fit the source aspect ratio or resolution, or the chosen profile does not match the source. | Inspect the input with ffmpeg -i. Preserve aspect ratio with scale-and-pad, avoid unsupported upscaling, and confirm the target resolution in Live Control Room. |
| No audio or wrong language track | The input lacks audio, the selected track is not the intended one, or mapping fails. | Inspect audio streams, select the intended track with an explicit map, or remove audio mapping and encoding options if the stream is intentionally silent. |
| Stream stops when the video ends | The input is a finite file and was not looped. | Use -stream_loop -1 before the input for a single-file loop, or configure and test a playlist. |
| Stream does not recover after a disconnect or restart | Temporary network recovery is not configured, or FFmpeg/host stopped without a restart mechanism. | Test FIFO-based recovery for the installed build, configure process supervision and host restart behavior, and monitor for a fresh connection in Live Control Room. |
Check rights and YouTube policies before going live
Having a video file does not establish that you have permission to rebroadcast it. Confirm that you have the necessary rights for the video, music, and other included material, and review YouTube’s copyright and monetization rules before running a loop. Repetition itself does not resolve rights or policy questions. Use YouTube’s own policy guidance for the current rules; do not treat successful ingest as proof that content is cleared.
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