...
| Parameter | Values available | Description |
|---|---|---|
| Audio parameters | ||
| codec | opus mpeg4-generic speex ulaw | Audio codec to use |
| bitrate | Depends on quality required and bandwidth available | Audio bitrate, bps |
| rate | 8000 11025 12000 16000 22050 24000 32000 44100 48000 | Audio sample rate, kHz |
| Video parameters | ||
| codec | h264 mpv vp8 | Video codec to use |
| bitrate | Depends on quality required and bandwidth available | Video bitrate, kbps |
| width | Depends on quality required and bandwidth available | Picture width |
| height | Depends on quality required and bandwidth available | Picture height |
| codeImpl | FF OPENH264 | Video codec used, FF by default |
| gop | Depends on quality required and bandwidth available | Key frames frequency (GOP) |
| fps | Depends on quality required and bandwidth available | Frames frequency per second |
| quality | Depends on quality required and bandwidth available | Video quality |
| preset | ultrafast superfast veryfast faster fast medium slow slower veryslow placebo | FF preset, ultrafast by default |
| profileDepends on required quality | 66 (Baseline) 77 (Main) 88 (Extended) 100 (High) | FF profile, 66 (Baseline) by default |
| level | Depends on required quality | FF level, 3.1 by default |
...