The Tool Desk
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Choose settings for your resolution, frame rate, and codec
YouTube’s encoder settings apply to the feed you send to its ingest servers; YouTube then creates viewer playback formats. Match the bitrate to the codec, resolution, and frame rate you actually send. The figures below are YouTube’s current published guidance, accessed in 2026; they are not a guarantee of stream quality on a particular connection.
| Incoming video profile | Minimum bitrate | Recommended bitrate |
|---|---|---|
| 720p30 H.264 | 3 Mbps | 8 Mbps |
| 1080p30 H.264 | 5 Mbps | 14 Mbps |
| 1080p30 AV1 or H.265/HEVC | Not stated in YouTube’s current guidance | 10 Mbps |
Use the H.264 values when encoding with FFmpeg’s libx264; do not borrow a bitrate from another codec’s row. The 5 Mbps 1080p30 H.264 figure is the published minimum, not the recommended target. YouTube recommends 14 Mbps for that profile. A more motion-heavy documentary, or a source with fine detail, may benefit from the higher recommendation if your encoder and sustained upload can support it. Consult YouTube’s live encoder settings, bitrates, and resolutions for other profiles and current values.
Core output settings
- Protocol: Use RTMPS where supported. YouTube recommends it because it encrypts the connection to Google’s servers.
- Rate control: Use constant bitrate (CBR).
- Keyframes: Set a two-second interval; YouTube says not to exceed four seconds. At 30 fps, two seconds is 60 frames.
- Audio: AAC stereo at 128 kbps is YouTube’s recommended advanced setting. Its guidance recommends 44.1 kHz for stereo.
- Color and scan: For SDR, use Rec. 709 and 8-bit color. YouTube’s advanced recommendations include progressive scan, two B-frames, one reference frame, and CABAC.
- Codec and frame rate: YouTube lists H.264, H.265/HEVC, and AV1 as supported, with frame rates up to 60 fps. H.264 is a conservative choice for broad FFmpeg compatibility; verify the encoders available in your local build before choosing another codec.
Loop one prerecorded video indefinitely
This illustrative command assumes a conventional 1920Ă—1080, 30 fps input and an FFmpeg build with libx264 and AAC support. Replace the input path, ingest URL, and stream key with your own values. The command is a configuration example, not a tested command or a promise of uninterrupted operation.
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ffmpeg -re -stream_loop -1 -i input.mp4
-c:v libx264 -preset veryfast -b:v 5M -maxrate 5M -bufsize 10M
-pix_fmt yuv420p -r 30 -g 60 -keyint_min 60 -sc_threshold 0
-c:a aac -b:a 128k -ar 44100 -ac 2
-f flv "YOUTUBE_RTMPS_INGEST_URL/STREAM_KEY"- Prepare the YouTube event. In YouTube Studio, create or open the live stream in Live Control Room. Copy its stream URL and stream key into the command. Treat the key like a password: do not expose it in a public script, log, screenshot, or source-control repository. See YouTube’s encoder setup guidance.
- Set the input and loop option. Replace
input.mp4with the local file path.-stream_loop -1loops that input indefinitely, and it must appear before the relevant-i. - Read a file at playback speed.
-rereads the file at its native rate, which is useful when simulating a live feed from a prerecorded file. It is not a universal option for actual live capture. - Set video encoding. The example encodes H.264 at a CBR target and maximum of 5 Mbps, with a two-second GOP at 30 fps. That bitrate is YouTube’s published 1080p30 H.264 minimum. For its recommended 14 Mbps target, change both
-b:vand-maxrateto14M, and ensure the line and encoder can sustain it. Set output dimensions and frame rate to match your intended feed rather than blindly forcing 1080p30. - Set audio and destination. The example encodes AAC stereo at 128 kbps and 44.1 kHz, then sends the FLV muxed output to the RTMPS ingest URL and stream key. If the source has no audio, verify your chosen output workflow and YouTube preview before going live.
FFmpeg options are positional: their order determines which input or output they affect. The example’s -preset veryfast, -bufsize 10M, -pix_fmt yuv420p, and -sc_threshold 0 are illustrative FFmpeg choices, not mandatory values prescribed by YouTube. Check supported encoder options against your installed FFmpeg build. Official references: YouTube’s encoder settings and FFmpeg’s command-line documentation.
Do not confuse looping with keeping a stream alive
A 24/7 stream has several independent continuity layers. A looping input handles only one of them.
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- Repeat the media:
-stream_loop -1repeats a finite input file. - Recover output after some temporary errors: FFmpeg documents a FIFO muxer pattern using
-f fifo -fifo_format flv,-attempt_recovery 1, and-recovery_wait_time 1. Its example is intended to attempt recovery every second indefinitely. This does not guarantee that every failure is recoverable or that YouTube preserves the same player session. See the FFmpeg full documentation. - Keep the host and connection available: A stopped computer, failed process, or broken network still interrupts the stream. YouTube warns that connectivity disruption can break a stream and recommends bandwidth headroom and testing backup encoder failover. Use a supervisor, monitoring, alerts, and a tested fallback if unattended continuity matters. See YouTube’s streaming tips.
The FIFO pattern is an FFmpeg output-recovery example, not a YouTube service-level guarantee. Check that the options exist and behave as expected in your FFmpeg version and build, and test against the actual ingest endpoint. FFmpeg’s documented protocol reconnect controls for input protocols are not a universal output-reconnect switch; do not copy HTTP input options such as -reconnect onto an RTMP output and assume they restore publishing. See the FFmpeg protocol documentation.
Test the whole path before leaving it unattended
- Check the build: Confirm your local FFmpeg version, output protocol, and selected encoders are available.
- Check sustained upload capacity: Run an upload-speed test under realistic conditions. YouTube advises leaving about 20% bandwidth room; where you use primary and backup streams, their combined bitrate plus that headroom should fit the available outbound capacity.
- Test representative content: Stream a sample with motion and audio similar to the intended program. Confirm the Live Control Room preview and stream-health indicators.
- Verify playback: Start the encoder in advance, then check the watch page and mobile playback, not only the encoder’s local output.
- Exercise failover: If you have a backup encoder, test it by stopping the primary or disconnecting its Ethernet and verify that the player rolls over as intended.
- Supervise unattended runs: Configure an external process supervisor and alerting. Make restart limits and recovery behavior visible; reconnect attempts do not eliminate gaps.
Encoder load, bitrate stability, and reliability depend on the input, FFmpeg build, machine, network, YouTube stream configuration, and supervision setup. A successful short test is useful, but does not establish that a stream will remain uninterrupted indefinitely.
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Plan playlists, rights, and archives separately
Multiple files and transitions
Do not assume the single-file loop command will rotate a playlist or create seamless transitions. A playlist or concat workflow needs compatible stream parameters and its own handling of timestamps, audio continuity, and encoder restarts. Test every transition before publishing; no universal command guarantees gapless playback for arbitrary mixed files.
Copyright and YouTube policy
Looping content does not grant permission to broadcast it or guarantee monetization. Confirm that you have the necessary rights to every video and audio element, and follow YouTube’s copyright and live-stream policies. Monetization is available only if the creator is in the YouTube Partner Program, as described in YouTube’s encoder setup guidance.
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Long-run archives
YouTube’s encoder setup page says streams under 12 hours are automatically archived. That statement does not establish that a stream running continuously beyond 12 hours will be saved as one complete video. If you need a complete local copy, configure a separate recording and archive workflow.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common FFmpeg 24/7 streaming problems
| Symptom | Likely cause | What to check or change |
|---|---|---|
| FFmpeg rejects an encoder or option | The installed build lacks the selected encoder, or an option is unsupported in that build. | Check the local FFmpeg build and available encoders; use options supported by that build. |
| YouTube reports poor stream health or the feed buffers | The upload cannot sustain the chosen bitrate, or it has insufficient headroom. | Test sustained outbound bandwidth, leave YouTube’s recommended headroom, and lower the bitrate or profile if needed. |
| The video plays once and stops | The input-loop option is missing or placed after the wrong input. | Put -stream_loop -1 before the corresponding -i. |
| The stream stops after a network or process failure | Input looping does not restart a failed output or FFmpeg process. | Test an appropriate output recovery pattern, supervise the process, add alerts, and verify a backup encoder where continuity matters. |
| Video or audio is wrong after a file transition | Playlist files may differ in codec parameters, timestamps, or audio continuity. | Test transitions with the actual playlist and resolve incompatible parameters or timestamp handling before the live run. |
| The stream is live but the expected complete archive is missing | YouTube’s cited automatic-archive statement applies to streams under 12 hours, not a promise for longer continuous runs. | Record and archive independently when a complete copy is required. |
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