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在这篇博客中,我们将创建一个简单的图形用户界面 (GUI) 工具,利用和来从视频文件中批量生成截图。这个工具能够让用户选择一个文件夹,遍历其中的所有视频文件,按照视频长度将其分为四等分,然后为每个视频生成四张截图。所有生成的截图将保存在一个以视频名称命名的文件夹中,并在截图完成后自动打开该文件夹。
C:\pythoncode\new\multivideofilescreenshot.py
工具介绍
- wxPython:用于创建桌面应用程序的图形界面。
- FFmpeg:一个强大的多媒体处理工具,用于提取视频帧。
所有代码
- import wx
- import os
- import subprocess
- import threading
- import datetime
- import sys
- class VideoScreenshotApp(wx.Frame):
- def __init__(self):
- wx.Frame.__init__(self, None, title="视频截图工具", size=(600, 400))
- # 创建面板
- panel = wx.Panel(self)
- # 创建路径选择控件
- self.path_label = wx.StaticText(panel, label="请选择文件夹:")
- self.path_textctrl = wx.TextCtrl(panel, style=wx.TE_READONLY)
- self.path_button = wx.Button(panel, label="选择路径")
- self.path_button.Bind(wx.EVT_BUTTON, self.on_select_path)
- # 创建文件列表控件,使用 CheckListBox 以支持多选
- self.file_list_ctrl = wx.CheckListBox(panel)
- # 创建截图按钮
- self.capture_button = wx.Button(panel, label="截图")
- self.capture_button.Bind(wx.EVT_BUTTON, self.on_capture)
- # 布局
- sizer = wx.BoxSizer(wx.VERTICAL)
- sizer.Add(self.path_label, 0, wx.ALL, 5)
- sizer.Add(self.path_textctrl, 0, wx.EXPAND | wx.ALL, 5)
- sizer.Add(self.path_button, 0, wx.ALL, 5)
- sizer.Add(self.file_list_ctrl, 1, wx.EXPAND | wx.ALL, 5)
- sizer.Add(self.capture_button, 0, wx.ALL | wx.ALIGN_CENTER, 5)
- panel.SetSizer(sizer)
- self.current_path = ""
- def on_select_path(self, event):
- dlg = wx.DirDialog(self, "选择文件夹", style=wx.DD_DEFAULT_STYLE)
- if dlg.ShowModal() == wx.ID_OK:
- self.current_path = dlg.GetPath()
- self.path_textctrl.SetValue(self.current_path)
- self.update_file_list()
- dlg.Destroy()
- def update_file_list(self):
- self.file_list_ctrl.Clear()
- if not self.current_path:
- return
- file_list = self.search_video_files(self.current_path)
- for filename, file_path, duration in file_list:
- self.file_list_ctrl.Append(f"{filename} - {str(datetime.timedelta(seconds=int(duration)))}", file_path)
- def search_video_files(self, directory):
- video_extensions = ['.mp4', '.avi', '.mkv', '.mov', '.wmv', '.flv', '.webm']
- file_list = []
- for root, dirs, files in os.walk(directory):
- for file in files:
- if os.path.splitext(file)[1].lower() in video_extensions:
- file_path = os.path.join(root, file)
- duration = self.get_video_duration(file_path)
- file_list.append((file, file_path, duration))
- return file_list
- def get_video_duration(self, file_path):
- cmd = [
- 'ffprobe',
- '-v', 'error',
- '-select_streams', 'v:0',
- '-show_entries', 'stream=duration',
- '-of', 'default=noprint_wrappers=1:nokey=1',
- file_path
- ]
- try:
- result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=True)
- duration_str = result.stdout.strip()
- if not duration_str:
- raise ValueError("ffprobe output is empty")
- return float(duration_str)
- except subprocess.CalledProcessError as e:
- wx.LogError(f"ffprobe error: {e.stderr}")
- raise
- except ValueError as e:
- wx.LogError(f"Value error: {e}")
- raise
- def on_capture(self, event):
- selected_indices = self.file_list_ctrl.GetCheckedItems()
- if selected_indices:
- for index in selected_indices:
- file_path = self.file_list_ctrl.GetClientData(index)
- file_name = os.path.basename(file_path)
- duration = self.get_video_duration(file_path)
- thread = threading.Thread(target=self.capture_screenshots, args=(file_path, duration))
- thread.start()
- else:
- wx.MessageBox("请先选择一个或多个视频文件", "提示", wx.OK | wx.ICON_INFORMATION)
- def capture_screenshots(self, file_path, duration):
- output_dir = os.path.join(self.current_path, os.path.splitext(os.path.basename(file_path))[0])
- if not os.path.exists(output_dir):
- os.makedirs(output_dir)
- # 计算每张截图的时间点
- intervals = [duration * i / 4 for i in range(1, 5)]
- # 生成截图
- for i, timestamp in enumerate(intervals):
- cmd = [
- 'ffmpeg',
- '-ss', str(datetime.timedelta(seconds=int(timestamp))),
- '-i', file_path,
- '-vframes', '1',
- os.path.join(output_dir, f'screenshot_{i+1}.jpg')
- ]
- subprocess.run(cmd, check=True)
- # 截图完成后,自动打开文件夹
- if sys.platform.startswith('win'):
- subprocess.Popen(['explorer', output_dir])
- elif sys.platform.startswith('darwin'):
- subprocess.Popen(['open', output_dir])
- elif sys.platform.startswith('linux'):
- subprocess.Popen(['xdg-open', output_dir])
- if __name__ == "__main__":
- app = wx.App(False)
- frame = VideoScreenshotApp()
- frame.Show()
- app.MainLoop()
复制代码 代码实现
下面是我们的工具实现代码:- import wx
- import os
- import subprocess
- import threading
- import datetime
- import sys
- class VideoScreenshotApp(wx.Frame):
- def __init__(self):
- wx.Frame.__init__(self, None, title="视频截图工具", size=(600, 400))
- # 创建面板
- panel = wx.Panel(self)
- # 创建路径选择控件
- self.path_label = wx.StaticText(panel, label="请选择文件夹:")
- self.path_textctrl = wx.TextCtrl(panel, style=wx.TE_READONLY)
- self.path_button = wx.Button(panel, label="选择路径")
- self.path_button.Bind(wx.EVT_BUTTON, self.on_select_path)
- # 创建文件列表控件,使用 CheckListBox 以支持多选
- self.file_list_ctrl = wx.CheckListBox(panel)
- # 创建截图按钮
- self.capture_button = wx.Button(panel, label="截图")
- self.capture_button.Bind(wx.EVT_BUTTON, self.on_capture)
- # 布局
- sizer = wx.BoxSizer(wx.VERTICAL)
- sizer.Add(self.path_label, 0, wx.ALL, 5)
- sizer.Add(self.path_textctrl, 0, wx.EXPAND | wx.ALL, 5)
- sizer.Add(self.path_button, 0, wx.ALL, 5)
- sizer.Add(self.file_list_ctrl, 1, wx.EXPAND | wx.ALL, 5)
- sizer.Add(self.capture_button, 0, wx.ALL | wx.ALIGN_CENTER, 5)
- panel.SetSizer(sizer)
- self.current_path = ""
- def on_select_path(self, event):
- dlg = wx.DirDialog(self, "选择文件夹", style=wx.DD_DEFAULT_STYLE)
- if dlg.ShowModal() == wx.ID_OK:
- self.current_path = dlg.GetPath()
- self.path_textctrl.SetValue(self.current_path)
- self.update_file_list()
- dlg.Destroy()
- def update_file_list(self):
- self.file_list_ctrl.Clear()
- if not self.current_path:
- return
- file_list = self.search_video_files(self.current_path)
- for filename, file_path, duration in file_list:
- self.file_list_ctrl.Append(f"{filename} - {str(datetime.timedelta(seconds=int(duration)))}", file_path)
- def search_video_files(self, directory):
- video_extensions = ['.mp4', '.avi', '.mkv', '.mov', '.wmv', '.flv', '.webm']
- file_list = []
- for root, dirs, files in os.walk(directory):
- for file in files:
- if os.path.splitext(file)[1].lower() in video_extensions:
- file_path = os.path.join(root, file)
- duration = self.get_video_duration(file_path)
- file_list.append((file, file_path, duration))
- return file_list
- def get_video_duration(self, file_path):
- cmd = [
- 'ffprobe',
- '-v', 'error',
- '-select_streams', 'v:0',
- '-show_entries', 'stream=duration',
- '-of', 'default=noprint_wrappers=1:nokey=1',
- file_path
- ]
- try:
- result = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, check=True)
- duration_str = result.stdout.strip()
- if not duration_str:
- raise ValueError("ffprobe output is empty")
- return float(duration_str)
- except subprocess.CalledProcessError as e:
- wx.LogError(f"ffprobe error: {e.stderr}")
- raise
- except ValueError as e:
- wx.LogError(f"Value error: {e}")
- raise
- def on_capture(self, event):
- selected_indices = self.file_list_ctrl.GetCheckedItems()
- if selected_indices:
- for index in selected_indices:
- file_path = self.file_list_ctrl.GetClientData(index)
- file_name = os.path.basename(file_path)
- duration = self.get_video_duration(file_path)
- thread = threading.Thread(target=self.capture_screenshots, args=(file_path, duration))
- thread.start()
- else:
- wx.MessageBox("请先选择一个或多个视频文件", "提示", wx.OK | wx.ICON_INFORMATION)
- def capture_screenshots(self, file_path, duration):
- output_dir = os.path.join(self.current_path, os.path.splitext(os.path.basename(file_path))[0])
- if not os.path.exists(output_dir):
- os.makedirs(output_dir)
- # 计算每张截图的时间点
- intervals = [duration * i / 4 for i in range(1, 5)]
- # 生成截图
- for i, timestamp in enumerate(intervals):
- cmd = [
- 'ffmpeg',
- '-ss', str(datetime.timedelta(seconds=int(timestamp))),
- '-i', file_path,
- '-vframes', '1',
- os.path.join(output_dir, f'screenshot_{i+1}.jpg')
- ]
- subprocess.run(cmd, check=True)
- # 截图完成后,自动打开文件夹
- if sys.platform.startswith('win'):
- subprocess.Popen(['explorer', output_dir])
- elif sys.platform.startswith('darwin'):
- subprocess.Popen(['open', output_dir])
- elif sys.platform.startswith('linux'):
- subprocess.Popen(['xdg-open', output_dir])
- if __name__ == "__main__":
- app = wx.App(False)
- frame = VideoScreenshotApp()
- frame.Show()
- app.MainLoop()
复制代码 代码解释
创建主窗口:
- 使用创建主窗口,添加路径选择控件、文件列表控件以及截图按钮。
路径选择:
文件列表更新:
- 方法遍历所选文件夹中的视频文件,获取每个视频的时长,并将信息显示在中。
视频时长获取:
截图生成:
- 方法处理截图请求,使用多线程来生成截图,以避免阻塞主线程。
- 方法使用命令生成四张截图,并将截图保存在以视频名称命名的文件夹中。
自动打开文件夹:
- 截图完成后,自动在文件浏览器中打开保存截图的文件夹。
效果如下
总结
通过这个工具,你可以轻松地从多个视频文件中生成截图,而无需手动操作。提供了一个简单易用的界面,而则负责处理视频帧的提取。这个工具不仅对视频编辑工作有帮助,也为批量处理视频文件提供了极大的便利。
以上就是使用 Python和 FFmpeg 批量截图视频到各自文件夹中的详细内容,更多关于Python FFmpeg 批量截图视频的资料请关注脚本之家其它相关文章!
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