# scrcpy (v1.19) [Read in another language](#translations) This application provides display and control of Android devices connected on USB (or [over TCP/IP][article-tcpip]). It does not require any _root_ access. It works on _GNU/Linux_, _Windows_ and _macOS_. ![screenshot](assets/screenshot-debian-600.jpg) It focuses on: - **lightness** (native, displays only the device screen) - **performance** (30~60fps) - **quality** (1920×1080 or above) - **low latency** ([35~70ms][lowlatency]) - **low startup time** (~1 second to display the first image) - **non-intrusiveness** (nothing is left installed on the device) [lowlatency]: https://github.com/Genymobile/scrcpy/pull/646 ## Requirements The Android device requires at least API 21 (Android 5.0). Make sure you [enabled adb debugging][enable-adb] on your device(s). [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 control it using keyboard and mouse. [control]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323 ## Get the app Packaging status ### Summary - Linux: `apt install scrcpy` - Windows: [download][direct-win64] - macOS: `brew install scrcpy` Build from sources: [BUILD] ([simplified process][BUILD_simple]) [BUILD]: BUILD.md [BUILD_simple]: BUILD.md#simple ### Linux On Debian (_testing_ and _sid_ for now) and Ubuntu (20.04): ``` apt install scrcpy ``` A [Snap] package is available: [`scrcpy`][snap-link]. [snap-link]: https://snapstats.org/snaps/scrcpy [snap]: https://en.wikipedia.org/wiki/Snappy_(package_manager) For Fedora, a [COPR] package is available: [`scrcpy`][copr-link]. [COPR]: https://fedoraproject.org/wiki/Category:Copr [copr-link]: https://copr.fedorainfracloud.org/coprs/zeno/scrcpy/ For Arch Linux, an [AUR] package is available: [`scrcpy`][aur-link]. [AUR]: https://wiki.archlinux.org/index.php/Arch_User_Repository [aur-link]: https://aur.archlinux.org/packages/scrcpy/ For Gentoo, an [Ebuild] is available: [`scrcpy/`][ebuild-link]. [Ebuild]: https://wiki.gentoo.org/wiki/Ebuild [ebuild-link]: https://github.com/maggu2810/maggu2810-overlay/tree/master/app-mobilephone/scrcpy You could also [build the app manually][BUILD] ([simplified process][BUILD_simple]). ### Windows For Windows, for simplicity, a prebuilt archive with all the dependencies (including `adb`) is available: - [`scrcpy-win64-v1.19.zip`][direct-win64] _(SHA-256: 383d6483f25ac0092d4bb9fef6c967351ecd50fc248e0c82932db97d6d32f11b)_ [direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.19/scrcpy-win64-v1.19.zip It is also available in [Chocolatey]: [Chocolatey]: https://chocolatey.org/ ```bash choco install scrcpy choco install adb # if you don't have it yet ``` And in [Scoop]: ```bash scoop install scrcpy scoop install adb # if you don't have it yet ``` [Scoop]: https://scoop.sh You can also [build the app manually][BUILD]. ### macOS The application is available in [Homebrew]. Just install it: [Homebrew]: https://brew.sh/ ```bash brew install scrcpy ``` You need `adb`, accessible from your `PATH`. If you don't have it yet: ```bash brew install android-platform-tools ``` It's also available in [MacPorts], which sets up adb for you: ```bash sudo port install scrcpy ``` [MacPorts]: https://www.macports.org/ You can also [build the app manually][BUILD]. ## Run Plug an Android device, and execute: ```bash scrcpy ``` It accepts command-line arguments, listed by: ```bash scrcpy --help ``` ## Features ### Capture configuration #### Reduce size Sometimes, it is useful to mirror an Android device at a lower definition to increase performance. To limit both the width and height to some value (e.g. 1024): ```bash scrcpy --max-size 1024 scrcpy -m 1024 # short version ``` The other dimension is computed to that the device aspect ratio is preserved. That way, a device in 1920×1080 will be mirrored at 1024×576. #### Change bit-rate The default bit-rate is 8 Mbps. To change the video bitrate (e.g. to 2 Mbps): ```bash scrcpy --bit-rate 2M scrcpy -b 2M # short version ``` #### Limit frame rate The capture frame rate can be limited: ```bash scrcpy --max-fps 15 ``` This is officially supported since Android 10, but may work on earlier versions. #### Crop 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: ```bash scrcpy --crop 1224:1440:0:0 # 1224x1440 at offset (0,0) ``` If `--max-size` is also specified, resizing is applied after cropping. #### Lock video orientation To lock the orientation of the mirroring: ```bash scrcpy --lock-video-orientation # initial (current) orientation scrcpy --lock-video-orientation=0 # natural orientation scrcpy --lock-video-orientation=1 # 90° counterclockwise scrcpy --lock-video-orientation=2 # 180° scrcpy --lock-video-orientation=3 # 90° clockwise ``` This affects recording orientation. The [window may also be rotated](#rotation) independently. #### Encoder Some devices have more than one encoder, and some of them may cause issues or crash. It is possible to select a different encoder: ```bash scrcpy --encoder OMX.qcom.video.encoder.avc ``` To list the available encoders, you could pass an invalid encoder name, the error will give the available encoders: ```bash scrcpy --encoder _ ``` ### Capture #### Recording It is possible to record the screen while mirroring: ```bash scrcpy --record file.mp4 scrcpy -r file.mkv ``` To disable mirroring while recording: ```bash scrcpy --no-display --record file.mp4 scrcpy -Nr file.mkv # interrupt recording with Ctrl+C ``` "Skipped frames" are recorded, even if they are not displayed in real time (for performance reasons). Frames are _timestamped_ on the device, so [packet delay variation] does not impact the recorded file. [packet delay variation]: https://en.wikipedia.org/wiki/Packet_delay_variation #### v4l2loopback On Linux, it is possible to send the video stream to a v4l2 loopback device, so that the Android device can be opened like a webcam by any v4l2-capable tool. The module `v4l2loopback` must be installed: ```bash sudo apt install v4l2loopback-dkms ``` To create a v4l2 device: ```bash sudo modprobe v4l2loopback ``` This will create a new video device in `/dev/videoN`, where `N` is an integer (more [options](https://github.com/umlaeute/v4l2loopback#options) are available to create several devices or devices with specific IDs). To list the enabled devices: ```bash # requires v4l-utils package v4l2-ctl --list-devices # simple but might be sufficient ls /dev/video* ``` To start scrcpy using a v4l2 sink: ```bash scrcpy --v4l2-sink=/dev/videoN scrcpy --v4l2-sink=/dev/videoN --no-display # disable mirroring window scrcpy --v4l2-sink=/dev/videoN -N # short version ``` (replace `N` by the device ID, check with `ls /dev/video*`) Once enabled, you can open your video stream with a v4l2-capable tool: ```bash ffplay -i /dev/videoN vlc v4l2:///dev/videoN # VLC might add some buffering delay ``` For example, you could capture the video within [OBS]. [OBS]: https://obsproject.com/ #### Buffering It is possible to add buffering. This increases latency but reduces jitter (see [#2464]). [#2464]: https://github.com/Genymobile/scrcpy/issues/2464 The option is available for display buffering: ```bash scrcpy --display-buffer=50 # add 50 ms buffering for display ``` and V4L2 sink: ```bash scrcpy --v4l2-buffer=500 # add 500 ms buffering for v4l2 sink ``` ### Connection #### Wireless _Scrcpy_ uses `adb` to communicate with the device, and `adb` can [connect] to a device over TCP/IP: 1. Connect the device to the same Wi-Fi as your computer. 2. Get your device IP address, in Settings → About phone → Status, or by executing this command: ```bash adb shell ip route | awk '{print $9}' ``` 3. Enable adb over TCP/IP on your device: `adb tcpip 5555`. 4. Unplug your device. 5. Connect to your device: `adb connect DEVICE_IP:5555` _(replace `DEVICE_IP`)_. 6. Run `scrcpy` as usual. It may be useful to decrease the bit-rate and the definition: ```bash scrcpy --bit-rate 2M --max-size 800 scrcpy -b2M -m800 # short version ``` [connect]: https://developer.android.com/studio/command-line/adb.html#wireless #### Multi-devices If several devices are listed in `adb devices`, you must specify the _serial_: ```bash scrcpy --serial 0123456789abcdef scrcpy -s 0123456789abcdef # short version ``` If the device is connected over TCP/IP: ```bash scrcpy --serial 192.168.0.1:5555 scrcpy -s 192.168.0.1:5555 # short version ``` You can start several instances of _scrcpy_ for several devices. #### Autostart on device connection You could use [AutoAdb]: ```bash autoadb scrcpy -s '{}' ``` [AutoAdb]: https://github.com/rom1v/autoadb #### SSH tunnel To connect to a remote device, it is possible to connect a local `adb` client to a remote `adb` server (provided they use the same version of the _adb_ protocol): ```bash adb kill-server # kill the local adb server on 5037 ssh -CN -L5037:localhost:5037 -R27183:localhost:27183 your_remote_computer # keep this open ``` From another terminal: ```bash scrcpy ``` To avoid enabling remote port forwarding, you could force a forward connection instead (notice the `-L` instead of `-R`): ```bash adb kill-server # kill the local adb server on 5037 ssh -CN -L5037:localhost:5037 -L27183:localhost:27183 your_remote_computer # keep this open ``` From another terminal: ```bash scrcpy --force-adb-forward ``` Like for wireless connections, it may be useful to reduce quality: ``` scrcpy -b2M -m800 --max-fps 15 ``` ### Window configuration #### Title By default, the window title is the device model. It can be changed: ```bash scrcpy --window-title 'My device' ``` #### Position and size The initial window position and size may be specified: ```bash scrcpy --window-x 100 --window-y 100 --window-width 800 --window-height 600 ``` #### Borderless To disable window decorations: ```bash scrcpy --window-borderless ``` #### Always on top To keep the scrcpy window always on top: ```bash scrcpy --always-on-top ``` #### Fullscreen The app may be started directly in fullscreen: ```bash scrcpy --fullscreen scrcpy -f # short version ``` Fullscreen can then be toggled dynamically with MOD+f. #### Rotation The window may be rotated: ```bash scrcpy --rotation 1 ``` Possibles values are: - `0`: no rotation - `1`: 90 degrees counterclockwise - `2`: 180 degrees - `3`: 90 degrees clockwise The rotation can also be changed dynamically with MOD+← _(left)_ and MOD+→ _(right)_. Note that _scrcpy_ manages 3 different rotations: - MOD+r requests the device to switch between portrait and landscape (the current running app may refuse, if it does not support the requested orientation). - [`--lock-video-orientation`](#lock-video-orientation) changes the mirroring orientation (the orientation of the video sent from the device to the computer). This affects the recording. - `--rotation` (or MOD+←/MOD+→) rotates only the window content. This affects only the display, not the recording. ### Other mirroring options #### Read-only To disable controls (everything which can interact with the device: input keys, mouse events, drag&drop files): ```bash scrcpy --no-control scrcpy -n ``` #### Display If several displays are available, it is possible to select the display to mirror: ```bash scrcpy --display 1 ``` The list of display ids can be retrieved by: ```bash adb shell dumpsys display # search "mDisplayId=" in the output ``` The secondary display may only be controlled if the device runs at least Android 10 (otherwise it is mirrored in read-only). #### Stay awake To prevent the device to sleep after some delay when the device is plugged in: ```bash scrcpy --stay-awake scrcpy -w ``` The initial state is restored when scrcpy is closed. #### Turn screen off It is possible to turn the device screen off while mirroring on start with a command-line option: ```bash scrcpy --turn-screen-off scrcpy -S ``` Or by pressing MOD+o at any time. To turn it back on, press MOD+Shift+o. On Android, the `POWER` button always turns the screen on. For convenience, if `POWER` is sent via scrcpy (via right-click or MOD+p), it will force to turn the screen off after a small delay (on a best effort 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: ```bash scrcpy --turn-screen-off --stay-awake scrcpy -Sw ``` #### Show touches For presentations, it may be useful to show physical touches (on the physical device). Android provides this feature in _Developers options_. _Scrcpy_ provides an option to enable this feature on start and restore the initial value on exit: ```bash scrcpy --show-touches scrcpy -t ``` Note that it only shows _physical_ touches (with the finger on the device). #### Disable screensaver By default, scrcpy does not prevent the screensaver to run on the computer. To disable it: ```bash scrcpy --disable-screensaver ``` ### Input control #### Rotate device screen Press MOD+r to switch between portrait and landscape modes. Note that it rotates only if the application in foreground supports the requested orientation. #### Copy-paste Any time the Android clipboard changes, it is automatically synchronized to the computer clipboard. Any Ctrl shortcut is forwarded to the device. In particular: - Ctrl+c typically copies - Ctrl+x typically cuts - Ctrl+v typically pastes (after computer-to-device clipboard synchronization) This typically works as you expect. The actual behavior depends on the active application though. For example, _Termux_ sends SIGINT on Ctrl+c instead, and _K-9 Mail_ composes a new message. To copy, cut and paste in such cases (but only supported on Android >= 7): - MOD+c injects `COPY` - MOD+x injects `CUT` - MOD+v injects `PASTE` (after computer-to-device clipboard synchronization) In addition, MOD+Shift+v allows to inject the computer clipboard text as a sequence of key events. This is useful when the component does not accept text pasting (for example in _Termux_), but it can break non-ASCII content. **WARNING:** Pasting the computer clipboard to the device (either via Ctrl+v or MOD+v) copies the content into the device clipboard. As a consequence, any Android application could read its content. You should avoid to paste sensitive content (like passwords) that way. Some devices do not behave as expected when setting the device clipboard programmatically. An option `--legacy-paste` is provided to change the behavior of Ctrl+v and MOD+v so that they also inject the computer clipboard text as a sequence of key events (the same way as MOD+Shift+v). #### Pinch-to-zoom To simulate "pinch-to-zoom": Ctrl+_click-and-move_. More precisely, hold Ctrl while pressing the left-click button. Until the left-click button is released, all mouse movements scale and rotate 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 a location inverted through the center of the screen. #### Text injection preference There are two kinds of [events][textevents] generated when typing text: - _key events_, signaling that a key is pressed or released; - _text events_, signaling that a text has been entered. By default, letters are injected using key events, so that the keyboard behaves as expected in games (typically for WASD keys). But this may [cause issues][prefertext]. If you encounter such a problem, you can avoid it by: ```bash scrcpy --prefer-text ``` (but this will break keyboard behavior in games) [textevents]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-text-input [prefertext]: https://github.com/Genymobile/scrcpy/issues/650#issuecomment-512945343 #### Key repeat By default, holding a key down generates repeated key events. This can cause performance problems in some games, where these events are useless anyway. To avoid forwarding repeated key events: ```bash scrcpy --no-key-repeat ``` #### Right-click and middle-click By default, right-click triggers BACK (or POWER on) and middle-click triggers HOME. To disable these shortcuts and forward the clicks to the device instead: ```bash scrcpy --forward-all-clicks ``` ### File drop #### Install APK To install an APK, drag & drop an APK file (ending with `.apk`) to the _scrcpy_ window. There is no visual feedback, a log is printed to the console. #### Push file to device To push a file to `/sdcard/Download/` on the device, drag & drop a (non-APK) file to the _scrcpy_ window. There is no visual feedback, a log is printed to the console. The target directory can be changed on start: ```bash scrcpy --push-target=/sdcard/Movies/ ``` ### Audio forwarding Audio is not forwarded by _scrcpy_. Use [sndcpy]. Also see [issue #14]. [sndcpy]: https://github.com/rom1v/sndcpy [issue #14]: https://github.com/Genymobile/scrcpy/issues/14 ## Shortcuts In the following list, MOD is the shortcut modifier. By default, it's (left) Alt or (left) Super. It can be changed using `--shortcut-mod`. Possible keys are `lctrl`, `rctrl`, `lalt`, `ralt`, `lsuper` and `rsuper`. For example: ```bash # use RCtrl for shortcuts scrcpy --shortcut-mod=rctrl # use either LCtrl+LAlt or LSuper for shortcuts scrcpy --shortcut-mod=lctrl+lalt,lsuper ``` _[Super] is typically the Windows or Cmd key._ [Super]: https://en.wikipedia.org/wiki/Super_key_(keyboard_button) | Action | Shortcut | ------------------------------------------- |:----------------------------- | Switch fullscreen mode | MOD+f | Rotate display left | MOD+← _(left)_ | Rotate display right | MOD+→ _(right)_ | Resize window to 1:1 (pixel-perfect) | MOD+g | Resize window to remove black borders | MOD+w \| _Double-left-click¹_ | Click on `HOME` | MOD+h \| _Middle-click_ | Click on `BACK` | MOD+b \| _Right-click²_ | Click on `APP_SWITCH` | MOD+s \| _4th-click³_ | Click on `MENU` (unlock screen) | MOD+m | Click on `VOLUME_UP` | MOD+↑ _(up)_ | Click on `VOLUME_DOWN` | MOD+↓ _(down)_ | Click on `POWER` | MOD+p | Power on | _Right-click²_ | Turn device screen off (keep mirroring) | MOD+o | Turn device screen on | MOD+Shift+o | Rotate device screen | MOD+r | Expand notification panel | MOD+n \| _5th-click³_ | Expand settings panel | MOD+n+n \| _Double-5th-click³_ | Collapse panels | MOD+Shift+n | Copy to clipboard⁴ | MOD+c | Cut to clipboard⁴ | MOD+x | Synchronize clipboards and paste⁴ | MOD+v | Inject computer clipboard text | MOD+Shift+v | Enable/disable FPS counter (on stdout) | MOD+i | Pinch-to-zoom | Ctrl+_click-and-move_ _¹Double-click on black borders to remove them._ _²Right-click turns the screen on if it was off, presses BACK otherwise._ _³4th and 5th mouse buttons, if your mouse has them._ _⁴Only on Android >= 7._ Shortcuts with repeated keys are executted by releasing and pressing the key a second time. For example, to execute "Expand settings panel": 1. Press and keep pressing MOD. 2. Then double-press n. 3. Finally, release MOD. All Ctrl+_key_ shortcuts are forwarded to the device, so they are handled by the active application. ## Custom paths To use a specific _adb_ binary, configure its path in the environment variable `ADB`: ```bash ADB=/path/to/adb scrcpy ``` To override the path of the `scrcpy-server` file, configure its path in `SCRCPY_SERVER_PATH`. [useful]: https://github.com/Genymobile/scrcpy/issues/278#issuecomment-429330345 ## Why _scrcpy_? A colleague challenged me to find a name as unpronounceable as [gnirehtet]. [`strcpy`] copies a **str**ing; `scrcpy` copies a **scr**een. [gnirehtet]: https://github.com/Genymobile/gnirehtet [`strcpy`]: http://man7.org/linux/man-pages/man3/strcpy.3.html ## How to build? See [BUILD]. ## Common issues See the [FAQ](FAQ.md). ## Developers Read the [developers page]. [developers page]: DEVELOP.md ## Licence Copyright (C) 2018 Genymobile Copyright (C) 2018-2021 Romain Vimont Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. ## Articles - [Introducing scrcpy][article-intro] - [Scrcpy now works wirelessly][article-tcpip] [article-intro]: https://blog.rom1v.com/2018/03/introducing-scrcpy/ [article-tcpip]: https://www.genymotion.com/blog/open-source-project-scrcpy-now-works-wirelessly/ ## Translations This README is available in other languages: - [Indonesian (Indonesia, `id`) - v1.16](README.id.md) - [Italiano (Italiano, `it`) - v1.19](README.it.md) - [日本語 (Japanese, `jp`) - v1.17](README.jp.md) - [한국어 (Korean, `ko`) - v1.11](README.ko.md) - [português brasileiro (Brazilian Portuguese, `pt-BR`) - v1.17](README.pt-br.md) - [Español (Spanish, `sp`) - v1.17](README.sp.md) - [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md) - [繁體中文 (Traditional Chinese, `zh-Hant`) - v1.15](README.zh-Hant.md) - [Turkish (Turkish, `tr`) - v1.18](README.tr.md) Only this README file is guaranteed to be up-to-date.