LibrePlanet: Conference/2020/Streaming

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(Undo revision 68741, accidentally added 2023 info)
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In each conference room was a desktop with [https://libreboot.org/docs/hardware/kgpe-d16.html librebooted ASUS KGPE-D16 motherboards].
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As a consequence of our bringing the conference online, the LibrePlanet 2020 streaming setup is a little bit different than the one we have used in [[LibrePlanet:Conference/2019/Streaming|past years]]. As we had a large number of remote speakers, we hosted our own [https://directory.fsf.org/wiki/Jitsi Jitsi] instance for remote speakers to connect to and enter a video "call" with the conference organizers. Some details of the Jitsi Meet configuration were tuned up to remove links to non-free services or proprietary browser download sites.
  
This machine streamed out to the world via OBS (Open Broadcaster Software) and [https://directory.fsf.org/wiki/Icecast Icecast]. Connected to it was a webcam and a mixer with microphones and loudspeakers connected.
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A screen capture of this call was then simultaneously recorded by the FSF tech team, and streamed out to the world via [https://directory.fsf.org/wiki/Gstreamer Gstreamer] and [https://directory.fsf.org/wiki/Icecast Icecast]. An improved version of the script we used can be found here: https://vcs.fsf.org/?p=streamdesktop.git;a=summary
  
If there was a pre-recorded video, it was played locally on the machine with [https://directory.fsf.org/wiki/Mpv mpv].
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Our three digital conference rooms all had similar streaming setups with the second monitor being broadcast with gstreamer to Icecast.  The desktops used [https://libreboot.org/docs/hardware/kgpe-d16.html librebooted ASUS KGPE-D16 motherboards].  If a talk was pre-recorded, it was played locally on the machine with [https://directory.fsf.org/wiki/Mpv mpv].  If a presenter had trouble sharing their screen with Jitsi to show their slides, the slides were stored locally ahead of time and controlled by the streamer as a backup solution.
 
 
   
 
For remote speakers, we hosted our own BigBlueButton 1.9 instance for remote speakers to connect to and enter a video "call" with a computer. A screen capture of this call was then simultaneously streamed in OBS.
 
 
 
OBS Settings are listed below:
 
 
 
<pre>
 
#### Output
 
 
 
##### Recording tab
 
 
 
Output Mode drop-down: `Advanced`
 
 
 
* Type: `Custom Output (FFmpeg)`
 
* FFmpeg Output Type: `Output to URL`
 
* File path or URL: `icecast://source:PASSWORD@example.fsf.org:8000/stream-room-NAME.webm`
 
  * Note: Password has an O as in Opal.  Not a zero.
 
* Container format: `webm`
 
* Muster settings (if any): `content_type=video/webm cluster_time_limit=5100 cluster_size_limit=2M`
 
* Video Bitrate: `1500 Kbps`
 
* Keyframe interval (frames): `150`
 
* Rescale Output: greyed out, not settable.
 
* Show all codecs (even if potentially incompatible): checked
 
* Video Encoder: `libvpx`
 
* Video Encoder Settings (if any): `rt cpu-used=5 threads=2 error-resilient=1 crf=30 g=150 minrate=1.5M maxrate=1.5M`
 
* Audio Bitrate: `96 Kbps`
 
* Audio Track: check mark on 1.
 
* Audio Encoder: `libvorbis`
 
* Audio Encoder Settings (if any): empty
 
 
 
#### Audio
 
 
 
* Desktop Audio: (Set to your output device such that you see sound levels when there is audio playing on your system)
 
  * When using the Behringer U-CONTROL UCA222 USB audio device, it comes up as `PCM2902 Audio Codec Analog Stereo`
 
 
 
#### Video
 
 
 
Base (Canvas) Resolution: `1280x720`
 
 
 
</pre>
 

Latest revision as of 04:00, 17 July 2023

As a consequence of our bringing the conference online, the LibrePlanet 2020 streaming setup is a little bit different than the one we have used in past years. As we had a large number of remote speakers, we hosted our own Jitsi instance for remote speakers to connect to and enter a video "call" with the conference organizers. Some details of the Jitsi Meet configuration were tuned up to remove links to non-free services or proprietary browser download sites.

A screen capture of this call was then simultaneously recorded by the FSF tech team, and streamed out to the world via Gstreamer and Icecast. An improved version of the script we used can be found here: https://vcs.fsf.org/?p=streamdesktop.git;a=summary

Our three digital conference rooms all had similar streaming setups with the second monitor being broadcast with gstreamer to Icecast. The desktops used librebooted ASUS KGPE-D16 motherboards. If a talk was pre-recorded, it was played locally on the machine with mpv. If a presenter had trouble sharing their screen with Jitsi to show their slides, the slides were stored locally ahead of time and controlled by the streamer as a backup solution.