To rotate videos from a folder on YouTube Live, use a playlist or script to choose and sequence the files, use FFmpeg to publish a continuous stream, and use NGINX RTMP as an ingest or relay point if your setup needs it. NGINX RTMP’s documented VOD playback is not the same as a folder-watching playlist: its play feature does not, by itself, establish a policy for cycling through arbitrary files. The exact playlist mechanism and recovery behavior depend on your operating system, FFmpeg build, media files, and configuration.
How the folder-to-YouTube pipeline works
Think of the setup as separate jobs rather than asking NGINX to discover and rotate files:
- Select and order files. A playlist or script decides which videos play, in what order, whether the sequence repeats, and what to do when a file is missing.
- Make one continuous feed. FFmpeg reads the selected files and emits a stream. If files differ in codecs, dimensions, frame rates, aspect ratios, or audio layout, simply copying their streams may not work; encoding may be necessary. Check the actual files and test transitions.
- Ingest or relay the feed. NGINX RTMP can receive or relay an RTMP feed. Its documented features include VOD playback, external program execution, and pushing streams to remote destinations, but those features do not guarantee a particular folder-rotation implementation. The module README describes the RTMP URL shape as
rtmp://host/app/name, whereappcorresponds to an application block in the configuration. See the nginx-rtmp-module README. - Send the stream to YouTube. Use the server URL and stream key from YouTube Live Control Room in the publishing encoder. You can publish from FFmpeg directly or route through NGINX, depending on your design.
For a small library that changes infrequently, a static playlist is often simpler to reason about than a folder scanner. That is an implementation choice, not a behavior guaranteed by NGINX RTMP: test end-of-file transitions, missing files, and what happens when you edit the playlist while the stream is running.
Choose where FFmpeg runs
FFmpeg publishes; NGINX receives or relays
In this arrangement, the playlist mechanism launches FFmpeg as the publisher. FFmpeg sends its output to an NGINX RTMP application, and NGINX can relay or push the stream onward if configured to do so. This keeps playlist sequencing in the component responsible for selecting the files.
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Plan process supervision explicitly: decide how FFmpeg starts, how you detect an exit, and whether a failure should restart the process or require operator action. Neither the reviewed NGINX module documentation nor the general feature descriptions establish reliable handling for every bad file, folder change, or restart scenario.
NGINX launches FFmpeg with an external-program directive
The nginx-rtmp-module README documents external program execution, including FFmpeg processing examples. This can place process launch under NGINX’s control, but it does not make NGINX a playlist manager. The external command still needs a playlist or script with defined ordering and error handling. The module’s README also says Windows support is limited and exec is unsupported there, so do not assume an exec ffmpeg configuration will work on a Windows build. See the module documentation.
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For NGINX Plus, F5 documents a separate dynamic-module installation and configuration path; it is not interchangeable with building the community module against open-source NGINX. Follow the instructions for the exact distribution and module you installed in F5’s NGINX RTMP documentation. Where appropriate, validate a configuration with nginx -t before applying it. F5’s page describes nginx -s reload in its NGINX Plus module workflow; do not treat that as a universal installation recipe for every community build.
Prepare YouTube Live and the stream key
- Get the destination details. In YouTube Live Control Room, obtain the server URL and stream key for the stream. Enter those values in the encoder or relay destination you have configured.
- Prefer RTMPS when supported. Use the RTMPS URL provided by YouTube and confirm your encoder supports it. YouTube recommends RTMPS for encrypted transport. Its guidance says: “We recommend streaming to YouTube Live with RTMPS, a secure extension to the popular RTMP streaming video protocol.” See YouTube’s encoder settings guidance.
- Protect the key. Treat the stream key like a password. Do not put it in a public playlist, shared screenshot, or public repository. If it is exposed, YouTube documents resetting it in Live Control Room; see Manage live stream settings.
Match the encoder settings to YouTube
YouTube’s current RTMP/RTMPS encoder guidance lists H.264, H.265/HEVC, or AV1 video; frame rates up to 60 fps; AAC or MP3 audio; and constant bitrate (CBR) encoding. It recommends a 2-second keyframe interval and says not to exceed 4 seconds. These are platform recommendations, not a guarantee that a particular source file or server will perform correctly. Check the current Live Control Room settings and stream-health feedback before relying on the setup. The guidance includes bitrate recommendations by resolution, frame rate, and codec; use the applicable row there rather than assuming one bitrate suits every file or output format: Choose live encoder settings, bitrates, and resolutions.
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If all files have compatible streams, a stream-copy approach may avoid another encoding step; if their video or audio properties differ, a normalized output may require encoding. Confirm the result with representative files, including a transition between two different videos. Set the output frame size, frame rate, audio format, bitrate mode, and keyframe interval to a combination supported by your encoder and accepted by YouTube.
Build and validate the rotation before going public
- Confirm the installed components. Verify that the NGINX build actually includes the RTMP module and that the FFmpeg executable and any playlist mechanism are available on the host. Community-module builds and NGINX Plus module installations follow different paths.
- Define playlist behavior. Specify order and repeat behavior, and decide what the process should do if a file is absent, unreadable, or ends unexpectedly. Decide whether additions or edits should apply immediately or only after restarting or reloading the playlist process; dynamic folder watching is not established by the module documentation.
- Check the NGINX configuration. Run
nginx -twhere applicable and address errors before starting the publisher. Use the configuration and reload procedure appropriate to your NGINX distribution. - Run a private or short test. Include movement and audio, and let at least one file transition occur. Confirm that playback continues, audio remains present, and the intended sequence repeats.
- Monitor YouTube stream health. Check the Live Control Room’s stream-health feedback and the encoder’s output while testing. YouTube itself recommends testing with representative motion and audio before going live.
Troubleshoot common rotation failures
| Symptom | Likely area to check | What to do |
|---|---|---|
| The stream plays one video but never advances. | The playlist or script may not be configured to move to the next file or repeat. | Check the sequencing mechanism separately from NGINX VOD playback. Test a short playlist through an end-of-file transition. |
| The stream stops at a file boundary. | The publisher may exit or fail to open the next file; the output may also change incompatibly between files. | Inspect the FFmpeg process and playlist handling, test the exact adjacent files, and determine how the supervisor responds to an exit. |
| New files do not appear in rotation. | A static playlist may not rescan the folder. | Verify whether your playlist mechanism scans dynamically. If not, regenerate or reload it using the procedure your setup supports. |
| NGINX rejects the RTMP configuration or URL. | The module may be absent, the application name may not match, or the configuration may not suit the installed distribution. | Confirm the module is present, match the URL’s application component to the configured application block, and run nginx -t where appropriate. |
| YouTube does not receive a healthy stream. | Check the destination URL, stream key, supported protocol, codec, bitrate mode, keyframe interval, and audio/video output. | Use the current values from Live Control Room, prefer the supplied RTMPS URL when supported, and review YouTube’s stream-health feedback. |
An exec example fails on Windows. |
The community module README describes Windows support as limited and says exec is unsupported there. |
Do not assume the Linux-oriented external-process arrangement applies to your Windows build; select a supported way to run and supervise FFmpeg. |
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