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cam2ip/README.md
2026-06-30 17:05:23 +02:00

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## cam2ip
Turn any webcam into an IP camera.
Example (in web browser):
http://localhost:56000/html
or
http://localhost:56000/mjpeg
You can also use apps like `ffplay` or `vlc`:
ffplay -i http://localhost:56000/mjpeg
### Requirements
* On Linux/RPi native Go [Video4Linux (V4L)](https://en.wikipedia.org/wiki/Video4Linux) implementation is used to capture images.
* On Windows [Media Foundation](https://en.wikipedia.org/wiki/Media_Foundation) is used (or [Video for Windows](https://en.wikipedia.org/wiki/Video_for_Windows) with the `vfw` build tag).
* On macOS [AVFoundation](https://en.wikipedia.org/wiki/AVFoundation) is used over [purego](https://github.com/ebitengine/purego), no cgo required.
### Build tags
* `vfw` - on Windows, use `Video for Windows` to access camera instead of the default `Media Foundation`
* `libjpeg` - build with `libjpeg` ([go-libjpeg](https://github.com/pixiv/go-libjpeg)) instead of native `image/jpeg`
### Download
Download the latest binaries from the [releases](https://github.com/gen2brain/cam2ip/releases).
### Installation
go install github.com/gen2brain/cam2ip/cmd/cam2ip@latest
This command will install `cam2ip` in `GOBIN`, you can point `GOBIN` to e.g. `/usr/local/bin` or `~/.local/bin`.
### Usage
```
Usage: cam2ip [<flags>]
--index
Camera index [CAM2IP_INDEX] (default "0")
--device
Camera name to use, matched as substring, overrides index [CAM2IP_DEVICE] (default "")
--delay
Delay between frames, in milliseconds [CAM2IP_DELAY] (default "10")
--width
Frame width [CAM2IP_WIDTH] (default "640")
--height
Frame height [CAM2IP_HEIGHT] (default "480")
--quality
Image quality [CAM2IP_QUALITY] (default "75")
--rotate
Rotate image, valid values are 90, 180, 270 [CAM2IP_ROTATE] (default "0")
--flip
Flip image, valid values are horizontal and vertical [CAM2IP_FLIP] (default "")
--no-webgl
Disable WebGL drawing of image (html handler) [CAM2IP_NO_WEBGL] (default "false")
--timestamp
Draws timestamp on image [CAM2IP_TIMESTAMP] (default "false")
--time-format
Time format [CAM2IP_TIME_FORMAT] (default "2006-01-02 15:04:05")
--bind-addr
Bind address [CAM2IP_BIND_ADDR] (default ":56000")
--htpasswd-file
Path to htpasswd file, if empty auth is disabled [CAM2IP_HTPASSWD_FILE] (default "")
--add-user
Add a user to the htpasswd file (with --htpasswd-file) and exit (default "")
--lazy
Open the camera only while clients are connected [CAM2IP_LAZY] (default "false")
--list-devices
List available cameras and exit (default "false")
--version
Print version and exit (default "false")
```
### Handlers
* `/html`: HTML handler, frames are pushed to canvas over websocket
* `/jpeg`: Static JPEG handler
* `/mjpeg`: Motion JPEG, supported natively in major web browsers