End-to-end encrypted voice channels, video and live streams
You join a voice channel with one click, like walking into a room where your friends already hang out. Video and audio are encrypted between the devices of the people talking, and the same channel shares your screen with sound, records the call on separate tracks and streams to an unlimited audience.
A voice channel that works like a room
A voice channel is open all the time. You see who is in it, you join without calling anyone, you leave whenever you like, and the conversation carries on without you.
people connect directly by default, every device to every other one
is the range in which the server owner sets the limit for direct connections
camera video, scaled down smoothly to 180p when the room gets crowded
the longest voice message, with a waveform and a transcript made on your device
The channel remembers what happened in it
- Channel status
- One line about what is going on right now: you are gaming, studying or just hanging out together.
- Chat next to the call
- Links and notes from the call stay with the channel instead of getting lost in the server's general chat.
- Pinned messages
- The most important messages from the channel chat are at hand for anyone who joins later.
- Who was here recently
- A list of people who were in the channel lately, so you know who to talk to.
Two people, a small room and a crowd: three ways for sound to travel
Plazer picks how to connect people on its own. Fewer hops mean less delay, and the more people there are, the more the community server helps. In every case only the people in the room know the key.
1Two people: straight to each other
A call between two people connects your devices directly, by the shortest route. The sound does not pass through any server on the way, so the delay is as low as it gets, which you notice most while gaming.
Directly, by the shortest route
2A small room: everyone to everyone
Up to 6 people, by default, every device connects to every other one. The server owner moves that limit anywhere from 2 to 12 people, depending on the connections their people have. As more people join, camera video steps down smoothly from 720p to 180p so the call does not break up for anyone.
Everyone to everyone, up to 6 people by default
3A big room: the server forwards but does not listen
Above the limit, the community server forwards video and audio. Every frame is encrypted beforehand with a key from the MLS group that the server does not know, so it passes on something it cannot play itself. The number of people is limited only by the machine the server runs on.
Through a server that does not know the key
Whenever someone joins or leaves, the people in the call agree on a new key. Someone new hears nothing from before they joined, and someone who left hears nothing after they left.
End-to-end encryption for video and audio
A server can carry the call, but it cannot listen in or put itself in the middle. It works the same way in a one-to-one call, in a group, in a public channel and while sharing your screen.
- Media protocol
- DTLS-SRTP with a fingerprint signed by the device key.
- Big rooms
- Frames encrypted with keys from MLS (RFC 9420). No server holds the media key.
- IP address
- In public channels audio goes through a relay that hides your IP address from the other people in the call.
- Who is in the call
- A new key every time someone joins or leaves.
Camera and screen sharing with audio
You show a game, a film or a document together with its sound, and others watch when they feel like it. Several people can stream in one channel at once, and viewers draw on the screen to point at things.
Your screen with its sound
You share the whole screen, a window or a browser tab with its audio, so friends hear the game or the film, not only your voice.
"Watch" when you want to
A shared screen never pops up for anyone uninvited. The channel shows who is streaming, and the picture opens only after you click "Watch".
Several streams in one channel
Two people show two screens, and everyone watches the one they care about, or both side by side.
Drawing on the screen
Viewers draw arrows and circles that fade away on their own after a moment. Everyone gets their own colour, and the person sharing decides whether drawing is on.
Your phone as a webcam
Your phone becomes a second camera for the computer you are calling from, for example to show a sheet of paper on your desk.
Background blur
The camera blurs what is behind you before the picture leaves your device.
Whispers, a waiting room and a call that moves with you
Three things that turn a plain voice channel into a place where you can work, study and game in peace.
Whisper
You talk to one person without leaving the channel. The rest of the room does not hear it, and you still hear everyone.
Waiting room
You get into the channel when someone already inside lets you in. Handy for conversations that are not for whoever happens to walk by.
Moving the call
You start on your computer, leave the house and finish on your phone. The call moves to the other device without hanging up and calling again.
Live streams with no viewer limit
The community server turns a channel into a stage. You go live, and anyone with access to the channel can watch, with no upper limit on viewers. A chat runs alongside, the stream records itself, and you cut the best moments into clips.
Premiere
Finished material starts for everyone at the same time, like a cinema screening, with the chat underneath.
Live
Video and audio reach viewers through the community server, and the live chat runs next to the stream.
Clips
You cut the best moments into short clips and post them to the channel while everyone is still talking about them.
Recording
When it ends, the stream stays on the server as a recording for those who missed it.
Studio: recording a call on separate tracks
A podcast, an interview or a gaming session to edit. Studio records every person on their own track, so later you can mute one person's cough or turn up someone who spoke too quietly without touching anyone else.
One track per person
Voices do not blend together, even when people talk at the same time.
Ready to edit
All tracks start at the same moment, so you line them up one under another in your editor.
Noise suppression, push to talk and mic sensitivity
Before anyone hears you, Plazer cleans up the sound on your device. You set how loud you have to be before the mic starts sending, and whether you only talk while holding a key.
Devices
Pick your microphone, speakers or headphones, and camera.
Sensitivity
The level at which the mic starts sending, so the hum of your fan does not reach anyone.
Push to talk
The mic sends only while you hold the key you picked.
Noise suppression
Keyboard clatter, the fan and the street outside stay on your side.
Volume per person
Turn up someone who speaks too quietly, only for yourself.
Voice filters
Change how your voice sounds in the call.
Streamer mode
Hides details on screen that your stream viewers should not see.
Your own shortcuts
Mute, deafen and push to talk on the keys that suit you.
Voice and video calls in direct messages and groups
You call a friend or a whole group straight from the conversation. The call rings on all your devices at once, and you answer on whichever one is closest.
Rings everywhere at once
The call arrives on your computer, your phone and in the browser at the same time. You answer on one, and the rest stop ringing.
Three big buttons
Answer, answer with video or decline. On a phone the buttons are large and easy to reach with your thumb.
Encrypted like the chat itself
A call in direct messages and in a group is end-to-end encrypted just like the text of that conversation.
Questions about voice and video calls
The most common questions about voice channels, the camera, screen sharing and live streams.
Up to 6 people, devices connect directly by default, and the server owner sets that limit anywhere from 2 to 12. Bigger calls are forwarded by the community server, and their size depends only on the machine it runs on. Live streams have no viewer limit.
Yes. Text in a public channel is readable by the server, but video and audio are encrypted between the devices of the people talking in every channel, public ones included. The server carries the call but cannot hear it.
No. In public channels audio goes through a relay, so the other people in the call do not see your IP address.
Yes. You share the whole screen, a window or a browser tab with its audio, and viewers open the picture with the "Watch" button. Several people can stream in one channel at once.
The recording and the clips stay on the community server the stream ran on, so people who missed it live can still watch it.
Yes. You move the call from your computer to your phone or back without hanging up, and your phone can also work as a second camera for the computer.
The mic sends only while you hold the key you picked. You choose the key yourself, just like the shortcuts for mute and deafen.
Read next
Voice is one part of Plazer. Here is the rest: encryption, direct messages and the servers your voice channels live on.
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