2. [Set up an SSH key and add it to the ssh-agent](https://help.github.com/en/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent), then add your key to the reMarkable with `ssh-copy-id root@10.11.99.1`. **Note:** the reMarkable 2 doesn't support `ed25519` keys, those users should generate and `rsa` key. Try out `ssh root@10.11.99.1`, it should **not** prompt for a password.
3. Clone this repository: `git clone https://github.com/rien/reStream`.
1. Install [git for windows](https://gitforwindows.org/), which includes `Git BASH`.
2. Install [ffmpeg for windows](https://ffmpeg.org/download.html#build-windows).
3. Download [lz4 for windows](https://github.com/lz4/lz4/releases) and extract the `zip` to a folder where you'll remember it (e.g. `C:\Users\{username}\lz4`).
4. Add the `ffmpeg`**and**`lz4` directories to the windows `Path` environment. [Here is a quick guide how.](https://www.architectryan.com/2018/03/17/add-to-the-path-on-windows-10/)
- Control Panel > Edit the system environment variables > Environment Variables
- Find the `Path` variable under System variables, click edit.
- Add two _New_ entries: one to the **bin** directory in the `ffmpeg` directory, and one to the `lz4` directory you created.
- Click OK
5. (Re)start `bash` so the new `Path` is used.
6. Generate a new ssh key using `ssh-keygen`.
7. Send the public key to the reMarkable (connect trough USB cable) using `ssh-copy-id -i ~/.ssh/id_rsa root@10.11.99.1`
8. Try out `ssh root@10.11.99.1`, it should **not** prompt for a password.
9. Go to step **3** of [the Unix installation instructions](#Unix).
-`-s --source`: the ssh destination of the reMarkable (default: `root@10.11.99.1`)
-`-o --output`: path of the output where the video should be recorded, as understood by `ffmpeg`; if this is `-`, the video is displayed in a new window and not recorded anywhere (default: `-`)
-`-f --format`: when recording to an output, this option is used to force the encoding format; if this is `-`, `ffmpeg`’s auto format detection based on the file extension is used (default: `-`).
-`-w --webcam`: record to a video4linux2 web cam device. By default the first found web cam is taken, this can be overwritten with `-o`. The video is scaled to 1280x720 to ensure compatibility with MS Teams, Skype for business and other programs which need this specific format. See [video4linux loopback](#video4linux-loopback) for installation instructions.
If you have problems, don't hesitate to [open an issue](https://github.com/rien/reStream/issues/new) or [send me an email](mailto:rien.maertens@posteo.be).
To set your remarkable as a webcam we need to be able to fake one. This is where the Video4Linux loopback kernel module comes into play. We need both the dkms and util packages. On Ubuntu you need to install:
```
apt install v4l2loopback-utils v4l2loopback-dkms
```
In some package managers `v4l2loopback-utils` is found in `v4l-utils`.
If you want to play with the `restream` code, you will have to [install Rust](https://www.rust-lang.org/learn/get-started) and [setup the reMarkable toolchain](https://github.com/canselcik/libremarkable#setting-up-the-toolchain) to do cross-platform development.
