adb命令之录屏screenrecord

命令格式：

# 录制视频
$ adb shell screenrecord [参数] /sdcard/demo.mp4

# 导出视频
$ adb pull /sdcard/demo.mp4

示例：

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$ adb shell screenrecord --size 720x1280 --time-limit 180 /sdcard/capture.mp4
$ adb shell screenrecord --time-limit 180 /sdcard/demo.mp4
$ adb shell screenrecord --verbose --time-limit 180 /sdcard/demo.mp4

具体参数介绍（–help）

$ adb shell screenrecord --help
Usage: screenrecord [options] <filename>

Android screenrecord v1.2.  Records the device's display to a .mp4 file.

Options:
--size WIDTHxHEIGHT
    Set the video size, e.g. "1280x720".  Default is the device's main
    display resolution (if supported), 1280x720 if not.  For best results,
    use a size supported by the AVC encoder.
--bit-rate RATE
    Set the video bit rate, in bits per second.  Value may be specified as
    bits or megabits, e.g. '4000000' is equivalent to '4M'.  Default 20Mbps.
--bugreport
    Add additional information, such as a timestamp overlay, that is helpful
    in videos captured to illustrate bugs.
--time-limit TIME
    Set the maximum recording time, in seconds.  Default / maximum is 180.
--verbose
    Display interesting information on stdout.
--help
    Show this message.

Recording continues until Ctrl-C is hit or the time limit is reached.

1. 指定录屏尺寸

1 2	--size WIDTHxHEIGHT # 如 --size 720x1280

注意：

一些异形屏手机，如水滴屏、U型屏等，不是标准的1080P（1080x1920）或者720P（720x1280）的屏幕尺寸，如不指定size进行录屏，则默认使用其非标准尺寸进行录屏，而一般AVC编码器不支持该种异形尺寸，导致录屏失败。

示例如下：

$ adb shell screenrecord --verbose /sdcard/capture.mp4
Main display is 1080x2340 @56.39fps (orientation=0)
Configuring recorder for 1080x2340 video/avc at 20.00Mbps
Content area is 1080x2340 at offset x=0 y=0
Encoder failed (err=-38)
Stopping encoder and muxer

2. 比特率设置

1 2	--bit-rate RATE # 默认20Mbps

3. 添加例如时间戳等附加信息

1 2	--bugreport # 目的方便调试

4. 设置录屏时长

1	--time-limit TIME

单位为秒，如 –time-limit 180 即为录制3分钟。

5. 打印详细输出信息

--verbose

如上面异形屏录制失败的信息

6. 显示帮助信息

--help