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First identify whether the failure is on FFmpeg’s input, its YouTube output, or the FFmpeg process itself. The familiar reconnect options in FFmpeg’s HTTP protocol handle certain HTTP input failures; they do not automatically repair a YouTube RTMP/RTMPS output failure or restart an encoder process that has exited. Match the error to the failing layer, check YouTube Live Control Room, and test a recovery plan before a service.
Identify which connection failed
FFmpeg reads media from an input—such as a file, camera, or network feed—and sends the resulting stream to an output. For YouTube, that output uses the Stream URL and stream key shown in Live Control Room. An error on one side is not fixed by retry settings for the other.
- Input failure: FFmpeg cannot open or continue reading the source. HTTP reconnect options may apply if the input is HTTP-based and the error matches the option.
- Output failure: FFmpeg cannot connect to or write to YouTube ingest. Check the destination URL, stream key, protocol, network and YouTube stream health.
- Process failure: FFmpeg exits or the host loses power or connectivity. HTTP input options do not supervise or restart the process; an external supervisor or backup encoder may be needed.
Before changing settings, save the complete FFmpeg log around the failure and record the command, ffmpeg -version, the input and output URL schemes, and the Live Control Room stream-health message. Redact credentials and never share the stream key.
Use HTTP reconnect options only for a matching input failure
FFmpeg documents these as HTTP protocol options. In practical terms, reconnect addresses a disconnect before EOF; reconnect_at_eof treats EOF as an error and triggers reconnection; reconnect_streamed applies to streamed or non-seekable inputs; reconnect_on_network_error covers TCP/TLS errors during connection; and reconnect_on_http_error can target specified HTTP codes or classes. See the FFmpeg HTTP protocol documentation and protocol options.
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For an HTTP input that should reconnect when its live feed disconnects or ends, an illustrative pattern is:
ffmpeg -reconnect 1
-reconnect_streamed 1
-reconnect_at_eof 1
-reconnect_delay_max 30
-i 'https://SOURCE.example/live'
...output options...
'rtmps://YOUTUBE_INGEST.example/STREAM_PATH/STREAM_KEY'Replace the placeholders and keep the key private. The options belong before the -i whose input they configure. This is a pattern, not a universal command or guarantee: check ffmpeg -h protocol=http on the installed build before relying on an option. Packaged FFmpeg builds may differ from current upstream. In current upstream source, reconnect and reconnect_streamed default to disabled and reconnect_delay_max is 120 seconds; treat these defaults as version-sensitive, not universal.
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Choose the trigger deliberately
- Use
reconnectfor a disconnect before the input reaches EOF. - Use
reconnect_at_eofonly when EOF means the live or endless source unexpectedly ended. FFmpeg says EOF is then treated as an error that causes reconnection. On a finite file, that can produce unwanted repeated playback or retries. - Use
reconnect_streamedwhen the HTTP source is streamed or non-seekable. - Use network-error or HTTP-error options only when the logged failure matches their documented TCP/TLS or HTTP response conditions.
Set finite retry counts and delay limits appropriate to the service, rather than retrying forever on permanent failures such as bad credentials, an invalid URL, or unsupported media. FFmpeg documents controls for retry counts and total reconnect delay; check their syntax and availability in the installed version.
Check YouTube ingest when FFmpeg cannot write the output
- Open the correct event in YouTube Live Control Room and copy its Stream URL and stream key into the encoder configuration. YouTube’s instructions are at Set up your encoder for live streaming.
- Confirm the output uses the intended server and protocol. For an RTMPS SSL error, YouTube advises verifying the
rtmpsURL and correct server; if those are correct and the error remains, try specifying port 443. See YouTube’s live streaming error guidance. - Compare the error time in FFmpeg’s log with the stream-health message in Live Control Room. The message can distinguish destination or ingest issues from source-side failures.
- Rotate the key only if it is compromised or otherwise needs rotation, then update the encoder with the replacement key.
Do not expect an HTTP input reconnect flag to fix an RTMP/RTMPS output error. If FFmpeg reports that it cannot open or write to the output, investigate the output connection, credentials, firewall or network conditions, and YouTube’s event status.
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Check encoding settings only when the evidence points to compatibility
Retry logic and encoder compatibility are separate issues. YouTube’s current encoder guidance recommends RTMP/RTMPS, constant bitrate (CBR), H.264, H.265 or AV1 video, AAC or MP3 audio, and a recommended two-second keyframe frequency that should not exceed four seconds. Its recommended H.264 bitrates are 10 Mbps for 1080p at 30 fps and 17 Mbps for 1080p at 60 fps. These are recommendations for those specific settings, not universal minimums. Consult YouTube’s encoder settings guidance and choose a bitrate your upload connection and production can sustain.
Changing codecs or bitrate is not a substitute for diagnosing a disconnected HTTP input. Adjust encoding when YouTube’s stream health or the logs indicate an ingest or compatibility problem.
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Test recovery before a service
- Run a preflight stream with representative movement and audio, then verify the preview and stream health in Live Control Room.
- Prepare the encoder early enough to address problems before the event. Keep an eye on stream-health messages during the event.
- If you rely on a backup encoder, test failover in advance. YouTube suggests testing by stopping the primary encoder or disconnecting its Ethernet cable; confirm the backup takes over as intended.
- Watch the public stream during the test and verify any local recording your church keeps.
Reconnect flags can reopen a qualifying input; they cannot guarantee uninterrupted uptime. Monitoring and a tested process- or encoder-level recovery path matter when the encoder exits or YouTube ingest fails.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting by symptom
| What you see | Likely layer | What to check |
|---|---|---|
| HTTP input disconnects before EOF | Input | Confirm the source is HTTP, check the error and installed HTTP options, and configure bounded reconnect attempts and delays. |
| Input reaches EOF and stops | Input | If the source is meant to be live or endless, consider reconnect_at_eof. Do not enable it blindly for a finite recording. |
| HTTP status, authentication, or invalid URL error | Input | Check the source URL and credentials. Avoid endless retries for a permanent error; reconnect settings cannot make invalid access details valid. |
| FFmpeg cannot connect to or write to YouTube | Output | Re-copy the correct event’s Stream URL and key, verify RTMP/RTMPS destination and network conditions, then compare the Live Control Room health message. |
| RTMPS SSL error | Output | Check the rtmps URL and server; if they are correct but the error persists, try port 443 as YouTube advises. |
| FFmpeg process exits or the host goes offline | Process or host | HTTP reconnect options will not restart the process. Use a tested external restart or backup-encoder plan and monitor it. |
| YouTube reports an encoder or stream compatibility issue | Encoding or ingest | Review protocol, CBR, codec, audio format, keyframe interval, and a sustainable bitrate against YouTube’s encoder guidance. |
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