242 lines
6.4 KiB
Markdown
242 lines
6.4 KiB
Markdown
# Frequently Asked Questions
|
|
|
|
Here are the common reported problems and their status.
|
|
|
|
|
|
## `adb` issues
|
|
|
|
`scrcpy` execute `adb` commands to initialize the connection with the device. If
|
|
`adb` fails, then scrcpy will not work.
|
|
|
|
In that case, it will print this error:
|
|
|
|
> ERROR: "adb push" returned with value 1
|
|
|
|
This is typically not a bug in _scrcpy_, but a problem in your environment.
|
|
|
|
To find out the cause, execute:
|
|
|
|
```bash
|
|
adb devices
|
|
```
|
|
|
|
### `adb` not found
|
|
|
|
You need `adb` accessible from your `PATH`.
|
|
|
|
On Windows, the current directory is in your `PATH`, and `adb.exe` is included
|
|
in the release, so it should work out-of-the-box.
|
|
|
|
|
|
### Device unauthorized
|
|
|
|
Check [stackoverflow][device-unauthorized].
|
|
|
|
[device-unauthorized]: https://stackoverflow.com/questions/23081263/adb-android-device-unauthorized
|
|
|
|
|
|
### Device not detected
|
|
|
|
> adb: error: failed to get feature set: no devices/emulators found
|
|
|
|
Check that you correctly enabled [adb debugging][enable-adb].
|
|
|
|
If your device is not detected, you may need some [drivers] (on Windows).
|
|
|
|
[enable-adb]: https://developer.android.com/studio/command-line/adb.html#Enabling
|
|
[drivers]: https://developer.android.com/studio/run/oem-usb.html
|
|
|
|
|
|
### Several devices connected
|
|
|
|
If several devices are connected, you will encounter this error:
|
|
|
|
> adb: error: failed to get feature set: more than one device/emulator
|
|
|
|
the identifier of the device you want to mirror must be provided:
|
|
|
|
```bash
|
|
scrcpy -s 01234567890abcdef
|
|
```
|
|
|
|
Note that if your device is connected over TCP/IP, you'll get this message:
|
|
|
|
> adb: error: more than one device/emulator
|
|
> ERROR: "adb reverse" returned with value 1
|
|
> WARN: 'adb reverse' failed, fallback to 'adb forward'
|
|
|
|
This is expected (due to a bug on old Android versions, see [#5]), but in that
|
|
case, scrcpy fallbacks to a different method, which should work.
|
|
|
|
[#5]: https://github.com/Genymobile/scrcpy/issues/5
|
|
|
|
|
|
### Conflicts between adb versions
|
|
|
|
> adb server version (41) doesn't match this client (39); killing...
|
|
|
|
This error occurs when you use several `adb` versions simultaneously. You must
|
|
find the program using a different `adb` version, and use the same `adb` version
|
|
everywhere.
|
|
|
|
You could overwrite the `adb` binary in the other program, or ask _scrcpy_ to
|
|
use a specific `adb` binary, by setting the `ADB` environment variable:
|
|
|
|
```bash
|
|
set ADB=/path/to/your/adb
|
|
scrcpy
|
|
```
|
|
|
|
|
|
### Device disconnected
|
|
|
|
If _scrcpy_ stops itself with the warning "Device disconnected", then the
|
|
`adb` connection has been closed.
|
|
|
|
Try with another USB cable or plug it into another USB port. See [#281] and
|
|
[#283].
|
|
|
|
[#281]: https://github.com/Genymobile/scrcpy/issues/281
|
|
[#283]: https://github.com/Genymobile/scrcpy/issues/283
|
|
|
|
|
|
|
|
## Control issues
|
|
|
|
### Mouse and keyboard do not work
|
|
|
|
On some devices, you may need to enable an option to allow [simulating input].
|
|
In developer options, enable:
|
|
|
|
> **USB debugging (Security settings)**
|
|
> _Allow granting permissions and simulating input via USB debugging_
|
|
|
|
[simulating input]: https://github.com/Genymobile/scrcpy/issues/70#issuecomment-373286323
|
|
|
|
|
|
### Mouse clicks at wrong location
|
|
|
|
On MacOS, with HiDPI support and multiple screens, input location are wrongly
|
|
scaled. See [#15].
|
|
|
|
[#15]: https://github.com/Genymobile/scrcpy/issues/15
|
|
|
|
Open _scrcpy_ directly on the monitor you use it.
|
|
|
|
|
|
### Special characters do not work
|
|
|
|
Injecting text input is [limited to ASCII characters][text-input]. A trick
|
|
allows to also inject some [accented characters][accented-characters], but
|
|
that's all. See [#37].
|
|
|
|
[text-input]: https://github.com/Genymobile/scrcpy/issues?q=is%3Aopen+is%3Aissue+label%3Aunicode
|
|
[accented-characters]: https://blog.rom1v.com/2018/03/introducing-scrcpy/#handle-accented-characters
|
|
[#37]: https://github.com/Genymobile/scrcpy/issues/37
|
|
|
|
|
|
## Client issues
|
|
|
|
### The quality is low
|
|
|
|
If the definition of your client window is smaller than that of your device
|
|
screen, then you might get poor quality, especially visible on text (see [#40]).
|
|
|
|
[#40]: https://github.com/Genymobile/scrcpy/issues/40
|
|
|
|
To improve downscaling quality, trilinear filtering is enabled automatically
|
|
if the renderer is OpenGL and if it supports mipmapping.
|
|
|
|
On Windows, you might want to force OpenGL:
|
|
|
|
```
|
|
scrcpy --render-driver=opengl
|
|
```
|
|
|
|
You may also need to configure the [scaling behavior]:
|
|
|
|
> `scrcpy.exe` > Properties > Compatibility > Change high DPI settings >
|
|
> Override high DPI scaling behavior > Scaling performed by: _Application_.
|
|
|
|
[scaling behavior]: https://github.com/Genymobile/scrcpy/issues/40#issuecomment-424466723
|
|
|
|
|
|
|
|
### KWin compositor crashes
|
|
|
|
On Plasma Desktop, compositor is disabled while _scrcpy_ is running.
|
|
|
|
As a workaround, [disable "Block compositing"][kwin].
|
|
|
|
[kwin]: https://github.com/Genymobile/scrcpy/issues/114#issuecomment-378778613
|
|
|
|
|
|
## Crashes
|
|
|
|
### Exception
|
|
|
|
There may be many reasons. One common cause is that the hardware encoder of your
|
|
device is not able to encode at the given definition:
|
|
|
|
> ```
|
|
> ERROR: Exception on thread Thread[main,5,main]
|
|
> android.media.MediaCodec$CodecException: Error 0xfffffc0e
|
|
> ...
|
|
> Exit due to uncaughtException in main thread:
|
|
> ERROR: Could not open video stream
|
|
> INFO: Initial texture: 1080x2336
|
|
> ```
|
|
|
|
or
|
|
|
|
> ```
|
|
> ERROR: Exception on thread Thread[main,5,main]
|
|
> java.lang.IllegalStateException
|
|
> at android.media.MediaCodec.native_dequeueOutputBuffer(Native Method)
|
|
> ```
|
|
|
|
Just try with a lower definition:
|
|
|
|
```
|
|
scrcpy -m 1920
|
|
scrcpy -m 1024
|
|
scrcpy -m 800
|
|
```
|
|
|
|
You could also try another [encoder](README.md#encoder).
|
|
|
|
|
|
## Command line on Windows
|
|
|
|
Some Windows users are not familiar with the command line. Here is how to open a
|
|
terminal and run `scrcpy` with arguments:
|
|
|
|
1. Press <kbd>Windows</kbd>+<kbd>r</kbd>, this opens a dialog box.
|
|
2. Type `cmd` and press <kbd>Enter</kbd>, this opens a terminal.
|
|
3. Go to your _scrcpy_ directory, by typing (adapt the path):
|
|
|
|
```bat
|
|
cd C:\Users\user\Downloads\scrcpy-win64-xxx
|
|
```
|
|
|
|
and press <kbd>Enter</kbd>
|
|
4. Type your command. For example:
|
|
|
|
```bat
|
|
scrcpy --record file.mkv
|
|
```
|
|
|
|
If you plan to always use the same arguments, create a file `myscrcpy.bat`
|
|
(enable [show file extensions] to avoid confusion) in the `scrcpy` directory,
|
|
containing your command. For example:
|
|
|
|
```bat
|
|
scrcpy --prefer-text --turn-screen-off --stay-awake
|
|
```
|
|
|
|
Then just double-click on that file.
|
|
|
|
You could also edit (a copy of) `scrcpy-console.bat` or `scrcpy-noconsole.vbs`
|
|
to add some arguments.
|
|
|
|
[show file extensions]: https://www.howtogeek.com/205086/beginner-how-to-make-windows-show-file-extensions/
|