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Merge pull request #552 from pcorace/docs

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Documentation of the variables added in the PR #548
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Slavi Pantaleev 2020-06-28 09:07:12 +03:00 committed by GitHub
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docs/configuring-playbook-jitsi.md
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@ -81,6 +81,47 @@ matrix_jitsi_jvb_container_extra_arguments:
- '--env "DOCKER_HOST_ADDRESS=<Local IP adress of the host>"'
```
## (Optional) Fine tune Jitsi
You may want to suspend unused video layers until they are requested again, to save up resources on both server and clients.
Read more on this feature [here](https://jitsi.org/blog/new-off-stage-layer-suppression-feature/)
For this add this line to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
```yaml
matrix_jitsi_web_config_enableLayerSuspension: true
```
You may wish to disable audio levels to avoid excessive refresh of the client-side page and decrease the CPU consumption involved.
For this add this line to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
```yaml
matrix_jitsi_web_config_disableAudioLevels: true
```
You may want to limit the number of video feeds forwarded to each client, to save up resources on both server and clients. As clients’ bandwidth and CPU may not bear the load, use this setting to avoid lag and crashes.
This feature is found by default in other webconference applications such as Office 365 Teams (limit is set to 4).
Read how it works [here](https://github.com/jitsi/jitsi-videobridge/blob/master/doc/last-n.md) and performance evaluation on this [study](https://jitsi.org/wp-content/uploads/2016/12/nossdav2015lastn.pdf)
For this add this line to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
```yaml
matrix_jitsi_web_config_channelLastN: 4
```
To enable the variables that allow you to manage the video configuration you must add the following line to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
```yaml
matrix_jitsi_web_config_constraints_enabled: true
```
You may want to limit the maximum video resolution, to save up resources on both server and clients.
For example, to set resolution to 480.
For this add this two lines to your `inventory/host_vars/matrix.DOMAIN/vars.yml` configuration:
```yaml
matrix_jitsi_web_config_constraints_video_height_ideal: 480
matrix_jitsi_web_config_constraints_video_height_max: 480
```
## Apply changes
Then re-run the playbook: `ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,start`