# Modules

go2rtc tries to name formats, protocols and codecs the same way they are named in FFmpeg.
Some formats and protocols go2rtc supports exclusively. They have no equivalent in FFmpeg.

- The [`echo`], [`expr`], [`hass`] and [`onvif`] modules receive a link to a stream. They don't know the protocol in advance.
- The [`exec`] and [`ffmpeg`] modules support many formats. They are identical to the [`http`] module.
- The [`api`], [`app`], [`debug`], [`ngrok`], [`pinggy`], [`srtp`], [`streams`] are supporting modules.

**Modules** implement communication APIs: authorization, encryption, command set, structure of media packets.

**Formats** describe the structure of the data being transmitted.

**Protocols** implement transport for data transmission.

| module         | formats         | protocols        | input | output | ingest | two-way |
|----------------|-----------------|------------------|-------|--------|--------|---------|
| [`alsa`]       | `pcm`           | `ioctl`          | yes   |        |        |         |
| [`bubble`]     | -               | `http`           | yes   |        |        |         |
| [`doorbird`]   | `mulaw`         | `http`           | yes   |        |        | yes     |
| [`dvrip`]      | -               | `tcp`            | yes   |        |        | yes     |
| [`echo`]       | *               | *                | yes   |        |        |         |
| [`eseecloud`]  | `rtp`           | `http`           | yes   |        |        |         |
| [`exec`]       | *               | `pipe`, `rtsp`   | yes   |        |        | yes     |
| [`expr`]       | *               | *                | yes   |        |        |         |
| [`ffmpeg`]     | *               | `pipe`, `rtsp`   | yes   |        |        |         |
| [`flussonic`]  | `mp4`           | `ws`             | yes   |        |        |         |
| [`gopro`]      | `mpegts`        | `udp`            | yes   |        |        |         |
| [`hass`]       | *               | *                | yes   |        |        |         |
| [`hls`]        | `mpegts`, `mp4` | `http`           |       | yes    |        |         |
| [`homekit`]    | `srtp`          | `hap`            | yes   | yes    |        | no      |
| [`http`]       | `adts`          | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `flv`           | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `h264`          | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `hevc`          | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `hls`           | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `mjpeg`         | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `mpjpeg`        | `http`           | yes   |        |        |         |
| [`http`]       | `mpegts`        | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `wav`           | `http`, `tcp`    | yes   |        |        |         |
| [`http`]       | `yuv4mpegpipe`  | `http`, `tcp`    | yes   |        |        |         |
| [`isapi`]      | `alaw`, `mulaw` | `http`           |       |        |        | yes     |
| [`ivideon`]    | `mp4`           | `ws`             | yes   |        |        |         |
| [`kasa`]       | `h264`, `mulaw` | `http`           | yes   |        |        |         |
| [`mjpeg`]      | `ascii`         | `http`           |       | yes    |        |         |
| [`mjpeg`]      | `jpeg`          | `http`           |       | yes    |        |         |
| [`mjpeg`]      | `mpjpeg`        | `http`           |       | yes    | yes    |         |
| [`mjpeg`]      | `yuv4mpegpipe`  | `http`           |       | yes    |        |         |
| [`mp4`]        | `mp4`           | `http`, `ws`     |       | yes    |        |         |
| [`mpeg`]       | `adts`          | `http`           |       | yes    |        |         |
| [`mpeg`]       | `mpegts`        | `http`           |       | yes    | yes    |         |
| [`multitrans`] | `rtp`           | `tcp`            |       |        |        | yes     |
| [`nest`]       | `srtp`          | `rtsp`, `webrtc` | yes   |        |        | no      |
| [`onvif`]      | `rtp`           | *                | yes   | yes    |        |         |
| [`ring`]       | `srtp`          | `webrtc`         | yes   |        |        | yes     |
| [`roborock`]   | `srtp`          | `webrtc`         | yes   |        |        | yes     |
| [`rtmp`]       | `flv`           | `rtmp`           | yes   | yes    | yes    |         |
| [`rtmp`]       | `flv`           | `http`           |       | yes    | yes    |         |
| [`rtsp`]       | `rtsp`          | `rtsp`           | yes   | yes    | yes    | yes     |
| [`tapo`]       | `mpegts`        | `http`           | yes   |        |        | yes     |
| [`tuya`]       | `srtp`          | `webrtc`         | yes   |        |        | yes     |
| [`v4l2`]       | `rawvideo`      | `ioctl`          | yes   |        |        |         |
| [`webrtc`]     | `srtp`          | `webrtc`         | yes   | yes    | yes    | yes     |
| [`webtorrent`] | `srtp`          | `webrtc`         | yes   | yes    |        |         |
| [`wyoming`]    | `pcm`           | `tcp`            |       | yes    |        |         |
| [`wyze`]       | -               | `tutk`           | yes   |        |        | yes     |
| [`xiaomi`]     | -               | `cs2`, `tutk`    | yes   |        |        | yes     |
| [`yandex`]     | `srtp`          | `webrtc`         | yes   |        |        |         |

[`alsa`]: alsa/README.md
[`api`]: api/README.md
[`app`]: app/README.md
[`bubble`]: bubble/README.md
[`debug`]: debug/README.md
[`doorbird`]: doorbird/README.md
[`dvrip`]: dvrip/README.md
[`echo`]: echo/README.md
[`eseecloud`]: eseecloud/README.md
[`exec`]: exec/README.md
[`expr`]: expr/README.md
[`ffmpeg`]: ffmpeg/README.md
[`flussonic`]: flussonic/README.md
[`gopro`]: gopro/README.md
[`hass`]: hass/README.md
[`hls`]: hls/README.md
[`homekit`]: homekit/README.md
[`http`]: http/README.md
[`isapi`]: isapi/README.md
[`ivideon`]: ivideon/README.md
[`kasa`]: kasa/README.md
[`mjpeg`]: mjpeg/README.md
[`mp4`]: mp4/README.md
[`mpeg`]: mpeg/README.md
[`multitrans`]: multitrans/README.md
[`nest`]: nest/README.md
[`ngrok`]: ngrok/README.md
[`onvif`]: onvif/README.md
[`pinggy`]: pinggy/README.md
[`ring`]: ring/README.md
[`roborock`]: roborock/README.md
[`rtmp`]: rtmp/README.md
[`rtsp`]: rtsp/README.md
[`srtp`]: srtp/README.md
[`streams`]: streams/README.md
[`tapo`]: tapo/README.md
[`tuya`]: tuya/README.md
[`v4l2`]: v4l2/README.md
[`webrtc`]: webrtc/README.md
[`webtorrent`]: webtorrent/README.md
[`wyoming`]: wyze/README.md
[`wyze`]: wyze/README.md
[`xiaomi`]: xiaomi/README.md
[`yandex`]: yandex/README.md