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172 lines
4.9 KiB
Markdown
172 lines
4.9 KiB
Markdown
# Camera
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Camera mirroring is supported for devices with Android 12 or higher.
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To capture the camera instead of the device screen:
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```
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scrcpy --video-source=camera
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```
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By default, it automatically switches [audio source](audio.md#source) to
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microphone (as if `--audio-source=mic` were also passed).
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```bash
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scrcpy --video-source=display # default is --audio-source=output
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scrcpy --video-source=camera # default is --audio-source=mic
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scrcpy --video-source=display --audio-source=mic # force display AND microphone
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scrcpy --video-source=camera --audio-source=output # force camera AND device audio output
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```
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Audio can be disabled:
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```bash
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# audio not captured at all
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scrcpy --video-source=camera --no-audio
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scrcpy --video-source=camera --no-audio --record=file.mp4
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# audio captured and recorded, but not played
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scrcpy --video-source=camera --no-audio-playback --record=file.mp4
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```
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## List
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To list the cameras available (with their declared valid sizes and frame rates):
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```
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scrcpy --list-cameras
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scrcpy --list-camera-sizes
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```
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_Note that the sizes and frame rates are declarative. They are not accurate on
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all devices: some of them are declared but not supported, while some others are
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not declared but supported._
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## Selection
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It is possible to pass an explicit camera id (as listed by `--list-cameras`):
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```
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scrcpy --video-source=camera --camera-id=0
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```
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Alternatively, the camera may be selected automatically:
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```bash
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scrcpy --video-source=camera # use the first camera
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scrcpy --video-source=camera --camera-facing=front # use the first front camera
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scrcpy --video-source=camera --camera-facing=back # use the first back camera
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scrcpy --video-source=camera --camera-facing=external # use the first external camera
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```
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If `--camera-id` is specified, then `--camera-facing` is forbidden (the id
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already determines the camera):
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```bash
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scrcpy --video-source=camera --camera-id=0 --camera-facing=front # error
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```
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### Size selection
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It is possible to pass an explicit camera size:
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```
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scrcpy --video-source=camera --camera-size=1920x1080
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```
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The given size may be listed among the declared valid sizes
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(`--list-camera-sizes`), but may also be anything else (some devices support
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arbitrary sizes):
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```
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scrcpy --video-source=camera --camera-size=1840x444
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```
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Alternatively, a declared valid size (among the ones listed by
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`list-camera-sizes`) may be selected automatically.
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Two constraints are supported:
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- `-m`/`--max-size` (already used for display mirroring), for example `-m1920`;
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- `--camera-ar` to specify an aspect ratio (`<num>:<den>`, `<value>` or
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`sensor`).
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Some examples:
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```bash
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scrcpy --video-source=camera # use the greatest width and the greatest associated height
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scrcpy --video-source=camera -m1920 # use the greatest width not above 1920 and the greatest associated height
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scrcpy --video-source=camera --camera-ar=4:3 # use the greatest size with an aspect ratio of 4:3 (+/- 10%)
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scrcpy --video-source=camera --camera-ar=1.6 # use the greatest size with an aspect ratio of 1.6 (+/- 10%)
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scrcpy --video-source=camera --camera-ar=sensor # use the greatest size with the aspect ratio of the camera sensor (+/- 10%)
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scrcpy --video-source=camera -m1920 --camera-ar=16:9 # use the greatest width not above 1920 and the closest to 16:9 aspect ratio
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```
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If `--camera-size` is specified, then `-m`/`--max-size` and `--camera-ar` are
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forbidden (the size is determined by the value given explicitly):
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```bash
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scrcpy --video-source=camera --camera-size=1920x1080 -m3000 # error
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```
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## Rotation
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To rotate the captured video, use the [video orientation](video.md#orientation)
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option:
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```
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scrcpy --video-source=camera --camera-size=1920x1080 --orientation=90
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```
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## Frame rate
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By default, camera is captured at Android's default frame rate (30 fps).
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To configure a different frame rate:
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```
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scrcpy --video-source=camera --camera-fps=60
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```
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## High speed capture
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The Android camera API also supports a [high speed capture mode][high speed].
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This mode is restricted to specific resolutions and frame rates, listed by
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`--list-camera-sizes`.
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```
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scrcpy --video-source=camera --camera-size=1920x1080 --camera-fps=240
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```
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[high speed]: https://developer.android.com/reference/android/hardware/camera2/CameraConstrainedHighSpeedCaptureSession
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## Brace expansion tip
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All camera options start with `--camera-`, so if your shell supports it, you can
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benefit from [brace expansion] (for example, it is supported _bash_ and _zsh_):
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```bash
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scrcpy --video-source=camera --camera-{facing=back,ar=16:9,high-speed,fps=120}
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```
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This will be expanded as:
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```bash
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scrcpy --video-source=camera --camera-facing=back --camera-ar=16:9 --camera-high-speed --camera-fps=120
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```
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[brace expansion]: https://www.gnu.org/software/bash/manual/html_node/Brace-Expansion.html
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## Webcam
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Combined with the [V4L2](v4l2.md) feature on Linux, the Android device camera
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may be used as a webcam on the computer.
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