被用PowerShell脚本进行录屏修订

ryano 修订了这个 Gist 1728564236. 跳至此修订

1 file changed, 1 insertion, 1 deletion

README.md

			@@ -4,7 +4,7 @@ Windows 中使用 PowerShell 进行录屏的脚本，只在用户活动的时（
4	4
5	5		## 准备
6	6
7		-	- 安装 `ffmpeg` 用来将截屏的png转换为视频.
	7	+	- 安装 `ffmpeg` 用来将截屏的png转换为视频. 如果不需要视频只要图片可以不装
8	8
9	9		## 用法
10	10		1. 用powsershell执行 `screenshot.ps1` 开始截屏生成png文件.

ryano 修订了这个 Gist 1728564190. 跳至此修订

4 files changed, 149 insertions

README.md(文件已创建)

		@@ -0,0 +1,15 @@
1	+	# Windows录屏脚本
2	+
3	+	Windows 中使用 PowerShell 进行录屏的脚本，只在用户活动的时（鼠标点击或移动或敲打键盘）才进行录制
4	+
5	+	## 准备
6	+
7	+	- 安装 `ffmpeg` 用来将截屏的png转换为视频.
8	+
9	+	## 用法
10	+	1. 用powsershell执行 `screenshot.ps1` 开始截屏生成png文件.
11	+	2. 停止powershell，执行 `make.cmd` 开始导出视频.
12	+	3. `generate-input-list.py` 可选的python脚本用来重新生成`duration.txt`当你删除了部分png文件时.
13	+
14	+	## 说明
15	+	- `duration.txt` 是给`ffmpeg`合成视频时用的时间轴文件，里面指明了每个png图片的播放时长。如果删除了部分png图片，需要使用`generate-input-list.py`来重新生成它

generate-input-list.py(文件已创建)

		@@ -0,0 +1,26 @@
1	+	import os
2	+	from datetime import datetime
3	+
4	+	time_format = '%Y%m%d_%H%M%S%f'
5	+
6	+	# 获取当前目录下所有的png文件名，无扩展名
7	+	png_files = [f.split('.')[0] for f in os.listdir('./shots') if f.endswith('.png')]
8	+
9	+	# 解析文件名并排序
10	+	sorted_files = sorted(png_files, key=lambda x: datetime.strptime(x, time_format))
11	+
12	+	# 计算时间间隔并生成输入文件
13	+	with open('./shots/duration.txt', 'w') as f:
14	+	for i in range(len(sorted_files)):
15	+	current_file = sorted_files[i]
16	+	current_time = datetime.strptime(current_file, time_format)
17	+
18	+	if i != 0:
19	+	prev_file = sorted_files[i-1]
20	+	prev_time = datetime.strptime(prev_file, time_format)
21	+	duration = (current_time - prev_time).total_seconds()
22	+	f.write(f"duration {duration}\n")
23	+
24	+	f.write(f"file '{current_file}.png'\n")
25	+
26	+	print("输入文件列表已生成为 duration.txt")

make.cmd(文件已创建)

			@@ -0,0 +1 @@
	1	+	ffmpeg -f concat -i ./shots/duration.txt -pix_fmt yuv420p -c:v libx264 -r 5 output.mp4

screenshot.ps1(文件已创建)

		@@ -0,0 +1,107 @@
1	+	# 定义保存截图的文件夹路径为当前脚本所在目录下的shots文件夹
2	+	$folderPath = Join-Path -Path $PSScriptRoot -ChildPath "shots"
3	+	if (-not (Test-Path -Path $folderPath)) {
4	+	New-Item -ItemType Directory -Path $folderPath
5	+	}
6	+
7	+	# 导入用户32.dll，用于检测鼠标键盘活动
8	+	Add-Type @"
9	+	using System;
10	+	using System.Runtime.InteropServices;
11	+	public class UserActivity {
12	+	[DllImport("user32.dll")]
13	+	public static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);
14	+
15	+	[StructLayout(LayoutKind.Sequential)]
16	+	public struct LASTINPUTINFO {
17	+	public uint cbSize;
18	+	public uint dwTime;
19	+	}
20	+	}
21	+	"@
22	+
23	+	# 检测用户是否活跃
24	+	function IsUserActive {
25	+	$lastInput = New-Object UserActivity+LASTINPUTINFO
26	+	$lastInput.cbSize = [System.Runtime.InteropServices.Marshal]::SizeOf($lastInput)
27	+
28	+	if ([UserActivity]::GetLastInputInfo([ref]$lastInput)) {
29	+	$idleTime = [Math]::Floor([TimeSpan]::FromMilliseconds([Environment]::TickCount - $lastInput.dwTime).TotalSeconds)
30	+	# 如果空闲时间小于5秒，认为用户是活跃的
31	+	return ($idleTime -lt 1)
32	+	}
33	+	return $false
34	+	}
35	+
36	+	$durationTxt = Join-Path -Path $folderPath -ChildPath "duration.txt"
37	+	$fileMatches = if (Test-Path -Path $durationTxt) { (Get-Content -Path $durationTxt -Tail 3 \| Select-String -Pattern "^file '(.*\.png)'$").Matches } else { @() }
38	+	$script:lastScreenshotFile = if ($fileMatches.Count -gt 0) { $fileMatches[0].Groups[1].Value } else { "" }
39	+	# Write-Host "lastScreenshotFile: $lastScreenshotFile"
40	+	$script:isFirstRun = $true
41	+	$script:lastScreenshotTime = if ($script:lastScreenshotFile -ne "") { [DateTime]::ParseExact($script:lastScreenshotFile.Substring(0, 18), "yyyyMMdd_HHmmssfff", $null) } else { [DateTime]::MinValue }
42	+
43	+	# 截屏函数
44	+	function TakeScreenshot {
45	+	$now = Get-Date
46	+	$timestamp = $now.ToString("yyyyMMdd_HHmmssfff")
47	+	$filePath = Join-Path -Path $folderPath -ChildPath "$timestamp.png"
48	+
49	+	Add-Type -AssemblyName System.Windows.Forms
50	+	Add-Type -AssemblyName System.Drawing
51	+	$bitmap = New-Object System.Drawing.Bitmap([System.Windows.Forms.Screen]::PrimaryScreen.Bounds.Width, [System.Windows.Forms.Screen]::PrimaryScreen.Bounds.Height)
52	+	$graphics = [System.Drawing.Graphics]::FromImage($bitmap)
53	+	# Capture the screen
54	+	$graphics.CopyFromScreen(0, 0, 0, 0, $bitmap.Size)
55	+
56	+	# Draw the cursor
57	+	$cursorPosition = [System.Windows.Forms.Cursor]::Position
58	+	$cursorRectangle = New-Object System.Drawing.Rectangle($cursorPosition, [System.Drawing.Size]::new(32, 32)) # Adjust size if needed
59	+	# [System.Windows.Forms.Cursor]::Current.Draw($graphics, $cursorRectangle)
60	+	[System.Windows.Forms.Cursors]::Arrow.Draw($graphics, $cursorRectangle)
61	+
62	+	$bitmap.Save($filePath, [System.Drawing.Imaging.ImageFormat]::Png)
63	+
64	+	# Add filename to duration.txt
65	+	if ($script:lastScreenshotFile -ne "") {
66	+	$duration = ([TimeSpan]::FromTicks(($now - $script:lastScreenshotTime).Ticks)).TotalSeconds
67	+	$durationStr = "duration {0:F3}" -f $duration
68	+	if ($script:isFirstRun) {
69	+	$lastDuration = Get-Content -Path $durationTxt -Tail 1 \| Select-String -Pattern "^duration [\d\.]+$"
70	+	if ($lastDuration) {
71	+	# remove last line
72	+	$lines = Get-Content -Path $durationTxt
73	+	$lines = $lines[0..($lines.Length - 2)]
74	+	$lines += $durationStr
75	+	$lines \| Set-Content -Path $durationTxt
76	+	} else {
77	+	Add-Content -Path $durationTxt -Value $durationStr
78	+	}
79	+	$script:isFirstRun = $false
80	+	} else {
81	+	Add-Content -Path $durationTxt -Value $durationStr
82	+	}
83	+	}
84	+	Add-Content -Path $durationTxt -Value "file '$timestamp.png'"
85	+
86	+	Write-Host "Screenshot saved: $timestamp.png"
87	+	[console]::beep(1000, 500) # 播放提示音
88	+
89	+	$script:lastScreenshotTime = $now
90	+	$script:lastScreenshotFile = "$timestamp.png"
91	+	}
92	+
93	+	# Delay 3 seconds to start
94	+	Start-Sleep -Seconds 3
95	+
96	+	# 主循环
97	+	while ($true) {
98	+	try {
99	+	if (IsUserActive) {
100	+	TakeScreenshot
101	+	}
102	+	Start-Sleep -Seconds 1
103	+	} catch {
104	+	Write-Host "An error occurred: $_"
105	+	Start-Sleep -Seconds 5 # 出错时等待5秒再继续
106	+	}
107	+	}

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