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PR #3177 <https://github.com/Genymobile/scrcpy/pull/3177>

Signed-off-by: Romain Vimont <rom@rom1v.com>
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README.md
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@ -7,7 +7,7 @@ _pronounced "**scr**een **c**o**py**"_
[Read in another language](#translations) [Read in another language](#translations)
This application provides display and control of Android devices connected via This application provides display and control of Android devices connected via
USB (or [over TCP/IP](#tcpip-wireless)). It does not require any _root_ access. USB or [over TCP/IP](#tcpip-wireless). It does not require any _root_ access.
It works on _GNU/Linux_, _Windows_ and _macOS_. It works on _GNU/Linux_, _Windows_ and _macOS_.
![screenshot](assets/screenshot-debian-600.jpg) ![screenshot](assets/screenshot-debian-600.jpg)
@ -19,7 +19,7 @@ It focuses on:
- **quality**: 1920×1080 or above - **quality**: 1920×1080 or above
- **low latency**: [35~70ms][lowlatency] - **low latency**: [35~70ms][lowlatency]
- **low startup time**: ~1 second to display the first image - **low startup time**: ~1 second to display the first image
- **non-intrusiveness**: nothing is left installed on the device - **non-intrusiveness**: nothing is left installed on the Android device
- **user benefits**: no account, no ads, no internet required - **user benefits**: no account, no ads, no internet required
- **freedom**: free and open source software - **freedom**: free and open source software
@ -27,10 +27,10 @@ It focuses on:
Its features include: Its features include:
- [recording](#recording) - [recording](#recording)
- mirroring with [device screen off](#turn-screen-off) - mirroring with [Android device screen off](#turn-screen-off)
- [copy-paste](#copy-paste) in both directions - [copy-paste](#copy-paste) in both directions
- [configurable quality](#capture-configuration) - [configurable quality](#capture-configuration)
- device screen [as a webcam (V4L2)](#v4l2loopback) (Linux-only) - Android device [as a webcam (V4L2)](#v4l2loopback) (Linux-only)
- [physical keyboard simulation (HID)](#physical-keyboard-simulation-hid) - [physical keyboard simulation (HID)](#physical-keyboard-simulation-hid)
- [physical mouse simulation (HID)](#physical-mouse-simulation-hid) - [physical mouse simulation (HID)](#physical-mouse-simulation-hid)
- [OTG mode](#otg) - [OTG mode](#otg)
@ -40,12 +40,12 @@ Its features include:
The Android device requires at least API 21 (Android 5.0). The Android device requires at least API 21 (Android 5.0).
Make sure you [enabled adb debugging][enable-adb] on your device(s). Make sure you [enable adb debugging][enable-adb] on your device(s).
[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling [enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
On some devices, you also need to enable [an additional option][control] to On some devices, you also need to enable [an additional option][control] to
control it using keyboard and mouse. control it using a keyboard and mouse.
[control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323 [control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
@ -97,14 +97,14 @@ For Gentoo, an [Ebuild] is available: [`scrcpy/`][ebuild-link].
[Ebuild]: https://wiki.gentoo.org/wiki/Ebuild [Ebuild]: https://wiki.gentoo.org/wiki/Ebuild
[ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy [ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy
You could also [build the app manually][BUILD] ([simplified You can also [build the app manually][BUILD] ([simplified
process][BUILD_simple]). process][BUILD_simple]).
### Windows ### Windows
For Windows, for simplicity, a prebuilt archive with all the dependencies For Windows, a prebuilt archive with all the dependencies (including `adb`) is
(including `adb`) is available: available:
- [`scrcpy-win64-v1.23.zip`][direct-win64] - [`scrcpy-win64-v1.23.zip`][direct-win64]
_(SHA-256: d2f601b1d0157faf65153d8a093d827fd65aec5d5842d677ac86fb2b5b7704cc)_ _(SHA-256: d2f601b1d0157faf65153d8a093d827fd65aec5d5842d677ac86fb2b5b7704cc)_
@ -148,7 +148,7 @@ You need `adb`, accessible from your `PATH`. If you don't have it yet:
brew install android-platform-tools brew install android-platform-tools
``` ```
It's also available in [MacPorts], which sets up adb for you: It's also available in [MacPorts], which sets up `adb` for you:
```bash ```bash
sudo port install scrcpy sudo port install scrcpy
@ -162,7 +162,7 @@ You can also [build the app manually][BUILD].
## Run ## Run
Plug an Android device, and execute: Plug an Android device into your computer, and execute:
```bash ```bash
scrcpy scrcpy
@ -180,7 +180,7 @@ scrcpy --help
#### Reduce size #### Reduce size
Sometimes, it is useful to mirror an Android device at a lower definition to Sometimes, it is useful to mirror an Android device at a lower resolution to
increase performance. increase performance.
To limit both the width and height to some value (e.g. 1024): To limit both the width and height to some value (e.g. 1024):
@ -190,8 +190,8 @@ scrcpy --max-size 1024
scrcpy -m 1024 # short version scrcpy -m 1024 # short version
``` ```
The other dimension is computed so that the device aspect ratio is preserved. The other dimension is computed so that the Android device aspect ratio is
That way, a device in 1920×1080 will be mirrored at 1024×576. preserved. That way, a device in 1920×1080 will be mirrored at 1024×576.
#### Change bit-rate #### Change bit-rate
@ -226,7 +226,7 @@ It may also be enabled or disabled at any time with <kbd>MOD</kbd>+<kbd>i</kbd>.
The device screen may be cropped to mirror only part of the screen. The device screen may be cropped to mirror only part of the screen.
This is useful for example to mirror only one eye of the Oculus Go: This is useful, for example, to mirror only one eye of the Oculus Go:
```bash ```bash
scrcpy --crop 1224:1440:0:0 # 1224x1440 at offset (0,0) scrcpy --crop 1224:1440:0:0 # 1224x1440 at offset (0,0)
@ -237,7 +237,6 @@ If `--max-size` is also specified, resizing is applied after cropping.
#### Lock video orientation #### Lock video orientation
To lock the orientation of the mirroring: To lock the orientation of the mirroring:
```bash ```bash
@ -262,7 +261,7 @@ crash. It is possible to select a different encoder:
scrcpy --encoder OMX.qcom.video.encoder.avc scrcpy --encoder OMX.qcom.video.encoder.avc
``` ```
To list the available encoders, you could pass an invalid encoder name, the To list the available encoders, you can pass an invalid encoder name; the
error will give the available encoders: error will give the available encoders:
```bash ```bash
@ -326,7 +325,7 @@ v4l2-ctl --list-devices
ls /dev/video* ls /dev/video*
``` ```
To start scrcpy using a v4l2 sink: To start `scrcpy` using a v4l2 sink:
```bash ```bash
scrcpy --v4l2-sink=/dev/videoN scrcpy --v4l2-sink=/dev/videoN
@ -334,7 +333,7 @@ scrcpy --v4l2-sink=/dev/videoN --no-display # disable mirroring window
scrcpy --v4l2-sink=/dev/videoN -N # short version scrcpy --v4l2-sink=/dev/videoN -N # short version
``` ```
(replace `N` by the device ID, check with `ls /dev/video*`) (replace `N` with the device ID, check with `ls /dev/video*`)
Once enabled, you can open your video stream with a v4l2-capable tool: Once enabled, you can open your video stream with a v4l2-capable tool:
@ -350,7 +349,7 @@ For example, you could capture the video within [OBS].
#### Buffering #### Buffering
It is possible to add buffering. This increases latency but reduces jitter (see It is possible to add buffering. This increases latency, but reduces jitter (see
[#2464]). [#2464]).
[#2464]: https://github.com/Genymobile/scrcpy/issues/2464 [#2464]: https://github.com/Genymobile/scrcpy/issues/2464
@ -382,14 +381,14 @@ An option `--tcpip` allows to configure the connection automatically. There are
two variants. two variants.
If the device (accessible at 192.168.1.1 in this example) already listens on a If the device (accessible at 192.168.1.1 in this example) already listens on a
port (typically 5555) for incoming adb connections, then run: port (typically 5555) for incoming _adb_ connections, then run:
```bash ```bash
scrcpy --tcpip=192.168.1.1 # default port is 5555 scrcpy --tcpip=192.168.1.1 # default port is 5555
scrcpy --tcpip=192.168.1.1:5555 scrcpy --tcpip=192.168.1.1:5555
``` ```
If adb TCP/IP mode is disabled on the device (or if you don't know the IP If _adb_ TCP/IP mode is disabled on the device (or if you don't know the IP
address), connect the device over USB, then run: address), connect the device over USB, then run:
```bash ```bash
@ -413,7 +412,7 @@ Alternatively, it is possible to enable the TCP/IP connection manually using
adb shell ip route | awk '{print $9}' adb shell ip route | awk '{print $9}'
``` ```
4. Enable adb over TCP/IP on your device: `adb tcpip 5555`. 4. Enable `adb` over TCP/IP on your device: `adb tcpip 5555`.
5. Unplug your device. 5. Unplug your device.
6. Connect to your device: `adb connect DEVICE_IP:5555` _(replace `DEVICE_IP` 6. Connect to your device: `adb connect DEVICE_IP:5555` _(replace `DEVICE_IP`
with the device IP address you found)_. with the device IP address you found)_.
@ -427,9 +426,9 @@ having to physically connect your device directly to your computer.
If the connection randomly drops, run your `scrcpy` command to reconnect. If it If the connection randomly drops, run your `scrcpy` command to reconnect. If it
says there are no devices/emulators found, try running `adb connect says there are no devices/emulators found, try running `adb connect
DEVICE_IP:5555` again, and then `scrcpy` as usual. If it still says there are DEVICE_IP:5555` again, and then `scrcpy` as usual. If it still says there are
none found, try running `adb disconnect` and then run those two commands again. none found, try running `adb disconnect`, and then run those two commands again.
It may be useful to decrease the bit-rate and the definition: It may be useful to decrease the bit-rate and the resolution:
```bash ```bash
scrcpy --bit-rate 2M --max-size 800 scrcpy --bit-rate 2M --max-size 800
@ -488,7 +487,7 @@ protocol).
##### Remote ADB server ##### Remote ADB server
To connect to a remote ADB server, make the server listen on all interfaces: To connect to a remote _adb server_, make the server listen on all interfaces:
```bash ```bash
adb kill-server adb kill-server
@ -496,17 +495,18 @@ adb -a nodaemon server start
# keep this open # keep this open
``` ```
**Warning: all communications between clients and ADB server are unencrypted.** **Warning: all communications between clients and the _adb server_ are
unencrypted.**
Suppose that this server is accessible at 192.168.1.2. Then, from another Suppose that this server is accessible at 192.168.1.2. Then, from another
terminal, run scrcpy: terminal, run `scrcpy`:
```bash ```bash
export ADB_SERVER_SOCKET=tcp:192.168.1.2:5037 export ADB_SERVER_SOCKET=tcp:192.168.1.2:5037
scrcpy --tunnel-host=192.168.1.2 scrcpy --tunnel-host=192.168.1.2
``` ```
By default, scrcpy uses the local port used for `adb forward` tunnel By default, `scrcpy` uses the local port used for `adb forward` tunnel
establishment (typically `27183`, see `--port`). It is also possible to force a establishment (typically `27183`, see `--port`). It is also possible to force a
different tunnel port (it may be useful in more complex situations, when more different tunnel port (it may be useful in more complex situations, when more
redirections are involved): redirections are involved):
@ -518,16 +518,16 @@ scrcpy --tunnel-port=1234
##### SSH tunnel ##### SSH tunnel
To communicate with a remote ADB server securely, it is preferable to use a SSH To communicate with a remote _adb server_ securely, it is preferable to use an
tunnel. SSH tunnel.
First, make sure the ADB server is running on the remote computer: First, make sure the _adb server_ is running on the remote computer:
```bash ```bash
adb start-server adb start-server
``` ```
Then, establish a SSH tunnel: Then, establish an SSH tunnel:
```bash ```bash
# local 5038 --> remote 5037 # local 5038 --> remote 5037
@ -536,7 +536,7 @@ ssh -CN -L5038:localhost:5037 -R27183:localhost:27183 your_remote_computer
# keep this open # keep this open
``` ```
From another terminal, run scrcpy: From another terminal, run `scrcpy`:
```bash ```bash
export ADB_SERVER_SOCKET=tcp:localhost:5038 export ADB_SERVER_SOCKET=tcp:localhost:5038
@ -553,7 +553,7 @@ ssh -CN -L5038:localhost:5037 -L27183:localhost:27183 your_remote_computer
# keep this open # keep this open
``` ```
From another terminal, run scrcpy: From another terminal, run `scrcpy`:
```bash ```bash
export ADB_SERVER_SOCKET=tcp:localhost:5038 export ADB_SERVER_SOCKET=tcp:localhost:5038
@ -595,7 +595,7 @@ scrcpy --window-borderless
#### Always on top #### Always on top
To keep the scrcpy window always on top: To keep the _scrcpy_ window always on top:
```bash ```bash
scrcpy --always-on-top scrcpy --always-on-top
@ -620,7 +620,7 @@ The window may be rotated:
scrcpy --rotation 1 scrcpy --rotation 1
``` ```
Possibles values are: Possible values:
- `0`: no rotation - `0`: no rotation
- `1`: 90 degrees counterclockwise - `1`: 90 degrees counterclockwise
- `2`: 180 degrees - `2`: 180 degrees
@ -669,19 +669,19 @@ adb shell dumpsys display # search "mDisplayId=" in the output
``` ```
The secondary display may only be controlled if the device runs at least Android The secondary display may only be controlled if the device runs at least Android
10 (otherwise it is mirrored in read-only). 10 (otherwise it is mirrored as read-only).
#### Stay awake #### Stay awake
To prevent the device to sleep after some delay when the device is plugged in: To prevent the device from sleeping after a delay when the device is plugged in:
```bash ```bash
scrcpy --stay-awake scrcpy --stay-awake
scrcpy -w scrcpy -w
``` ```
The initial state is restored when scrcpy is closed. The initial state is restored when _scrcpy_ is closed.
#### Turn screen off #### Turn screen off
@ -699,9 +699,10 @@ Or by pressing <kbd>MOD</kbd>+<kbd>o</kbd> at any time.
To turn it back on, press <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>. To turn it back on, press <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>o</kbd>.
On Android, the `POWER` button always turns the screen on. For convenience, if On Android, the `POWER` button always turns the screen on. For convenience, if
`POWER` is sent via scrcpy (via right-click or <kbd>MOD</kbd>+<kbd>p</kbd>), it `POWER` is sent via _scrcpy_ (via right-click or <kbd>MOD</kbd>+<kbd>p</kbd>),
will force to turn the screen off after a small delay (on a best effort basis). it will force to turn the screen off after a small delay (on a best effort
The physical `POWER` button will still cause the screen to be turned on. basis). The physical `POWER` button will still cause the screen to be turned
on.
It can also be useful to prevent the device from sleeping: It can also be useful to prevent the device from sleeping:
@ -712,7 +713,7 @@ scrcpy -Sw
#### Power off on close #### Power off on close
To turn the device screen off when closing scrcpy: To turn the device screen off when closing _scrcpy_:
```bash ```bash
scrcpy --power-off-on-close scrcpy --power-off-on-close
@ -734,12 +735,13 @@ scrcpy --show-touches
scrcpy -t scrcpy -t
``` ```
Note that it only shows _physical_ touches (with the finger on the device). Note that it only shows _physical_ touches (by a finger on the device).
#### Disable screensaver #### Disable screensaver
By default, scrcpy does not prevent the screensaver to run on the computer. By default, _scrcpy_ does not prevent the screensaver from running on the
computer.
To disable it: To disable it:
@ -781,18 +783,18 @@ To copy, cut and paste in such cases (but only supported on Android >= 7):
- <kbd>MOD</kbd>+<kbd>v</kbd> injects `PASTE` (after computer-to-device - <kbd>MOD</kbd>+<kbd>v</kbd> injects `PASTE` (after computer-to-device
clipboard synchronization) clipboard synchronization)
In addition, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> allows to inject the In addition, <kbd>MOD</kbd>+<kbd>Shift</kbd>+<kbd>v</kbd> injects the computer
computer clipboard text as a sequence of key events. This is useful when the clipboard text as a sequence of key events. This is useful when the component
component does not accept text pasting (for example in _Termux_), but it can does not accept text pasting (for example in _Termux_), but it can break
break non-ASCII content. non-ASCII content.
**WARNING:** Pasting the computer clipboard to the device (either via **WARNING:** Pasting the computer clipboard to the device (either via
<kbd>Ctrl</kbd>+<kbd>v</kbd> or <kbd>MOD</kbd>+<kbd>v</kbd>) copies the content <kbd>Ctrl</kbd>+<kbd>v</kbd> or <kbd>MOD</kbd>+<kbd>v</kbd>) copies the content
into the device clipboard. As a consequence, any Android application could read into the Android clipboard. As a consequence, any Android application could read
its content. You should avoid pasting sensitive content (like passwords) that its content. You should avoid pasting sensitive content (like passwords) that
way. way.
Some devices do not behave as expected when setting the device clipboard Some Android devices do not behave as expected when setting the device clipboard
programmatically. An option `--legacy-paste` is provided to change the behavior programmatically. An option `--legacy-paste` is provided to change the behavior
of <kbd>Ctrl</kbd>+<kbd>v</kbd> and <kbd>MOD</kbd>+<kbd>v</kbd> so that they of <kbd>Ctrl</kbd>+<kbd>v</kbd> and <kbd>MOD</kbd>+<kbd>v</kbd> so that they
also inject the computer clipboard text as a sequence of key events (the same also inject the computer clipboard text as a sequence of key events (the same
@ -805,29 +807,29 @@ To disable automatic clipboard synchronization, use
To simulate "pinch-to-zoom": <kbd>Ctrl</kbd>+_click-and-move_. To simulate "pinch-to-zoom": <kbd>Ctrl</kbd>+_click-and-move_.
More precisely, hold <kbd>Ctrl</kbd> while pressing the left-click button. Until More precisely, hold down <kbd>Ctrl</kbd> while pressing the left-click button.
the left-click button is released, all mouse movements scale and rotate the Until the left-click button is released, all mouse movements scale and rotate
content (if supported by the app) relative to the center of the screen. the content (if supported by the app) relative to the center of the screen.
Concretely, scrcpy generates additional touch events from a "virtual finger" at Technically, _scrcpy_ generates additional touch events from a "virtual finger"
a location inverted through the center of the screen. at a location inverted through the center of the screen.
#### Physical keyboard simulation (HID) #### Physical keyboard simulation (HID)
By default, scrcpy uses Android key or text injection: it works everywhere, but By default, _scrcpy_ uses Android key or text injection: it works everywhere,
is limited to ASCII. but is limited to ASCII.
Alternatively, scrcpy can simulate a physical USB keyboard on Android to provide Alternatively, `scrcpy` can simulate a physical USB keyboard on Android to
a better input experience (using [USB HID over AOAv2][hid-aoav2]): the virtual provide a better input experience (using [USB HID over AOAv2][hid-aoav2]): the
keyboard is disabled and it works for all characters and IME. virtual keyboard is disabled and it works for all characters and IME.
[hid-aoav2]: https://source.android.com/devices/accessories/aoa2#hid-support [hid-aoav2]: https://source.android.com/devices/accessories/aoa2#hid-support
However, it only works if the device is connected by USB. However, it only works if the device is connected via USB.
Note: On Windows, it may only work in [OTG mode](#otg), not while mirroring (it Note: On Windows, it may only work in [OTG mode](#otg), not while mirroring (it
is not possible to open a USB device if it is already open by another process is not possible to open a USB device if it is already open by another process
like the adb daemon). like the _adb daemon_).
To enable this mode: To enable this mode:
@ -862,7 +864,7 @@ a physical keyboard is connected).
Similarly to the physical keyboard simulation, it is possible to simulate a Similarly to the physical keyboard simulation, it is possible to simulate a
physical mouse. Likewise, it only works if the device is connected by USB. physical mouse. Likewise, it only works if the device is connected by USB.
By default, scrcpy uses Android mouse events injection, using absolute By default, _scrcpy_ uses Android mouse events injection with absolute
coordinates. By simulating a physical mouse, a mouse pointer appears on the coordinates. By simulating a physical mouse, a mouse pointer appears on the
Android device, and relative mouse motion, clicks and scrolls are injected. Android device, and relative mouse motion, clicks and scrolls are injected.
@ -873,7 +875,7 @@ scrcpy --hid-mouse
scrcpy -M # short version scrcpy -M # short version
``` ```
You could also add `--forward-all-clicks` to [forward all mouse You can also add `--forward-all-clicks` to [forward all mouse
buttons][forward_all_clicks]. buttons][forward_all_clicks].
[forward_all_clicks]: #right-click-and-middle-click [forward_all_clicks]: #right-click-and-middle-click
@ -892,7 +894,7 @@ It is possible to run _scrcpy_ with only physical keyboard and mouse simulation
(HID), as if the computer keyboard and mouse were plugged directly to the device (HID), as if the computer keyboard and mouse were plugged directly to the device
via an OTG cable. via an OTG cable.
In this mode, _adb_ (USB debugging) is not necessary, and mirroring is disabled. In this mode, `adb` (USB debugging) is not necessary, and mirroring is disabled.
To enable OTG mode: To enable OTG mode:
@ -918,7 +920,7 @@ connected by USB.
#### Text injection preference #### Text injection preference
There are two kinds of [events][textevents] generated when typing text: Two kinds of [events][textevents] are generated when typing text:
- _key events_, signaling that a key is pressed or released; - _key events_, signaling that a key is pressed or released;
- _text events_, signaling that a text has been entered. - _text events_, signaling that a text has been entered.
@ -1075,7 +1077,7 @@ handled by the active application.
## Custom paths ## Custom paths
To use a specific _adb_ binary, configure its path in the environment variable To use a specific `adb` binary, configure its path in the environment variable
`ADB`: `ADB`:
```bash ```bash
@ -1088,7 +1090,7 @@ To override the path of the `scrcpy-server` file, configure its path in
To override the icon, configure its path in `SCRCPY_ICON_PATH`. To override the icon, configure its path in `SCRCPY_ICON_PATH`.
## Why _scrcpy_? ## Why the name _scrcpy_?
A colleague challenged me to find a name as unpronounceable as [gnirehtet]. A colleague challenged me to find a name as unpronounceable as [gnirehtet].
@ -1148,7 +1150,7 @@ If you encounter a bug, please read the [FAQ] first, then open an [issue].
[issue]: https://github.com/Genymobile/scrcpy/issues [issue]: https://github.com/Genymobile/scrcpy/issues
For general questions or discussions, you could also use: For general questions or discussions, you can also use:
- Reddit: [`r/scrcpy`](https://www.reddit.com/r/scrcpy) - Reddit: [`r/scrcpy`](https://www.reddit.com/r/scrcpy)
- Twitter: [`@scrcpy_app`](https://twitter.com/scrcpy_app) - Twitter: [`@scrcpy_app`](https://twitter.com/scrcpy_app)

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