If FFmpeg’s YouTube livestream keeps disconnecting from an Ubuntu VM on Oracle Cloud Infrastructure (OCI), first establish what stopped: FFmpeg, its input, the network write, or YouTube’s receipt of the feed. Compare timestamped FFmpeg logs with YouTube Live Control Room’s stream-health status, then check the ingest URL and RTMPS settings, OCI and Ubuntu network controls, connection-tracking metrics, and sustained upload capacity. Without your command, logs, and OCI configuration, no single cause can be diagnosed in advance.
First identify what “disconnects” means
A stream can fail at different points even when the visible symptom is the same. FFmpeg may exit; it may stay open while its input stalls; an output write or TLS connection may fail; or YouTube may continue receiving data but mark the feed unhealthy. These are diagnostic possibilities, not a diagnosis of your VM.
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- Record the exact event. Save the FFmpeg version and build configuration, input type, exact command with the stream key redacted, UTC time of the problem, and complete FFmpeg stderr around it. Note whether the process exits, remains active, or stops producing output.
- Check YouTube at the same time. In YouTube Live Control Room, compare the event with stream status and stream-health information. YouTube recommends testing with audio and motion representative of the planned stream and monitoring health during the event. YouTube’s live-streaming troubleshooting guidance explains the health indicators.
- Classify the evidence. An input timestamp that stops advancing suggests a source stall; CPU or encoder warnings point toward an encoding problem; socket or TLS errors point toward output connectivity or ingest setup; YouTube reporting an unhealthy feed while FFmpeg remains connected calls for checking the stream’s media and encoder settings.
Keep the stream key private. Redact it from logs, command examples, screenshots, and support requests; anyone with the key may be able to broadcast to your stream.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Verify the YouTube ingest URL and RTMPS setup
Copy the ingest URL from YouTube Live Control Room rather than guessing a hostname or reusing an old address. When selecting RTMPS, make sure you have copied the RTMPS URL: YouTube notes that the ordinary RTMP address may be shown by default. If your FFmpeg workflow accepts the stream key separately, follow that workflow; otherwise construct the output address exactly as its documented format requires. YouTube’s encoder setup instructions cover locating the server URL and stream key.
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RTMPS is RTMP over TLS. Google’s RTMPS ingestion guidance specifies port 443 and explains that the server hostname is needed for authentication through Server Name Indication (SNI). A certificate error, timeout, or failed handshake can result from a wrong protocol, port, hostname, or TLS/SNI configuration. Google also notes that a timeout after reaching a YouTube server can occur when cleartext RTMP is sent to an endpoint expecting RTMPS.
- Confirm the output uses
rtmpswhen the copied endpoint is RTMPS, and that it targets the exact host and port shown by YouTube. - Check the installed FFmpeg build supports the protocol and TLS implementation required by that URL. FFmpeg’s protocol documentation describes RTMPS as RTMP over a secure SSL connection.
- Inspect the destination address and key/path formatting without sharing the key. A malformed output URL can look like a network failure.
Check OCI and Ubuntu network controls separately
OCI network access can be governed by multiple controls. Oracle’s VCN connection troubleshooting guidance identifies network security groups (NSGs), subnet security lists, and the operating-system firewall as distinct layers. A permissive setting at one layer does not prove that outbound traffic is allowed end to end.
- Inspect the instance’s NSGs. Check the egress policy for the destination and TCP port used by the selected RTMPS endpoint.
- Inspect the subnet’s security lists. Confirm the attached lists do not block that outbound connection or its stateful response traffic.
- Inspect the Ubuntu guest firewall. Check the active firewall rules on the VM as a separate control.
- Confirm the route. Verify the VCN route configuration provides the intended path to the public endpoint.
This is an outbound publishing connection, so do not apply an inbound port-opening recipe blindly. The exact rule depends on your VCN, route table, NSGs, security lists, and guest firewall.
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Look for connection-tracking exhaustion during intermittent failures
If the connection works and then drops intermittently, inspect the attached VNIC’s connection-tracking metrics and correlate their timestamps with the FFmpeg failures. Oracle documents metrics for ingress and egress packets dropped because the connection-tracking table is full, as well as connection-tracking utilization. Oracle’s stated thresholds are specific: any nonzero full-table dropped-packet count indicates the table is full, and 100% utilization also indicates a full table. A metric observed outside the failure window does not by itself establish that tracking caused the disconnect.
Compare encoder bitrate with sustained upload capacity
A bitrate setting that is valid for YouTube may still exceed what the VM’s path can sustain. YouTube recommends measuring upload bitrate and choosing a quality that is reliable for the available connection. The figures below are YouTube’s published H.264 encoder recommendations on its settings page, accessed in 2026—not measurements of any OCI region or guarantee that your route can maintain the rate. Check YouTube’s current encoder settings before changing a production stream.
| H.264 output | Minimum bitrate | Recommended bitrate |
|---|---|---|
| 720p30 | 3 Mbps | 8 Mbps |
| 720p60 | 3 Mbps | 8 Mbps |
| 1080p30 | 5 Mbps | 14 Mbps |
| 1080p60 | 6 Mbps | 17 Mbps |
Record the codec, resolution, frame rate, configured bitrate, and a sustained outbound-capacity measurement. A brief speed test is useful evidence, but sustained streaming stability matters too. Temporarily testing at a lower bitrate can help show whether capacity is involved; it cannot, by itself, prove the cause.
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- YouTube lists RTMP/RTMPS ingest; H.264, H.265, and AV1; frame rates up to 60 fps; and CBR (constant bitrate) as encoder settings.
- The recommended keyframe interval is 2 seconds, with a maximum of 4 seconds.
- For audio, YouTube lists AAC or MP3 and 44.1 kHz stereo.
H.265 and AV1 have separate bitrate guidance, so do not apply the H.264 table to those codecs. Check the current YouTube settings page for the codec and output format you actually use.
Test recovery on your installed FFmpeg setup
Do not assume a reconnect option will resume a YouTube live output seamlessly from the interrupted media position. Recovery depends on the installed FFmpeg version and build, protocol and muxer path, input source, and how the process is managed. FFmpeg’s protocol documentation does not establish a version-independent YouTube resume guarantee.
- Check the local help for the installed FFmpeg binary and the options supported by that build.
- Reproduce a short test using the actual input type and ingest endpoint; retain timestamped stderr and YouTube health information.
- If a service manager or wrapper restarts FFmpeg, test the restart policy separately. Confirm it does not create duplicate streams, restart in a rapid loop, or obscure the first failure.
- After any change, validate that the feed recovers as intended under the actual source and endpoint before relying on it for a long broadcast.
Common symptoms and what to check next
| Observed symptom | Evidence to inspect | Next check |
|---|---|---|
| FFmpeg exits at the disconnect time | Full stderr and process exit status | Identify whether the final error is from the input, encoder, output socket, or TLS connection before changing settings. |
| FFmpeg stays alive but timestamps or frames stop advancing | Input progress, source status, CPU/encoder warnings | Test the input independently and check whether the encoder is keeping up. |
| TLS, certificate, handshake, or timeout errors | Exact redacted output URL, port, and TLS diagnostics | Re-copy the RTMPS endpoint from YouTube and verify port 443 and hostname/SNI handling. |
| Socket write errors or intermittent drops | UTC failure times, OCI egress rules, VNIC tracking metrics | Correlate the event with NSGs, subnet security lists, Ubuntu firewall rules, routes, and tracking-table drops. |
| YouTube reports poor health while FFmpeg appears connected | YouTube stream-health status and actual codec/bitrate/frame-rate settings | Check sustained upload headroom and that the output meets the relevant YouTube encoder recommendations. |
These branches help narrow the investigation; none identifies the cause without the corresponding logs and configuration.
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