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Add ll-hls to stream (#19530)

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Co-authored-by: Franck Nijhof <git@frenck.dev>
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uvjustin 2021-09-30 15:24:10 +08:00 committed by GitHub
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source/_integrations/stream.markdown
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@ -24,6 +24,19 @@ The `stream` integration is automatically loaded by `default_config` and enabled
stream: stream:
``` ```
## LL-HLS
There is the option to enable LL-HLS for lower latency. Please note that LL-HLS has strict timing and network requirements that can be hard to meet, so this option may not work on all setups. As HTTP/2 is required by the LL-HLS specification, the use of an HTTP/2 enabled reverse proxy is strongly recommended.
To enable LL-HLS, add the following to your `configuration.yaml`:
```yaml
# Example LL-HLS configuration.yaml entry.
stream:
ll_hls: true
part_duration: 0.75 # Range of 0.2 to 1.5
segment_duration: 6 # Range of 2 to 10
```
## Technical Details ## Technical Details
The integration currently supports proxying H.264 and H.265 source streams to the HLS protocol and requires at least FFmpeg >= 4. Note that H.265 support is limited to Safari, iOS, and Android. The `stream` integration also provides limited support for audio. PCM codecs (e.g. G.711/G.723/G.726/G.729) are not supported. ADTS AAC audio is also currently not supported. Most other AAC and MP3 encoded audio should work. The integration currently supports proxying H.264 and H.265 source streams to the HLS protocol and requires at least FFmpeg >= 4. Note that H.265 support is limited to Safari, iOS, and Android. The `stream` integration also provides limited support for audio. PCM codecs (e.g. G.711/G.723/G.726/G.729) are not supported. ADTS AAC audio is also currently not supported. Most other AAC and MP3 encoded audio should work.