在编译脚本中运行subprocess.popen具有很大的延迟

发布于 2025-01-26 17:55:40 字数 582 浏览 3 评论 0原文

编辑：在此特定示例中，在Windows 10上使用Python 3.8。

我需要通过subprocess.popen运行ffprobe，以便我可以捕获和解析输出。如果我在脚本中执行此操作，它几乎可以立即运行，但是如果我用Pyinstaller编译脚本并做同样的事情，则需要超过0.8秒的时间才能完成。是否可以从编译脚本中更快地执行该技巧或任何方法？如果存在，我愿意听到特定于FFProbe的答案。

这就是我目前正在使用的。额外的代码是为了确保FFProbe在运行时不会闪烁控制台窗口（卸下控制台窗口实际上使其平均更快0.1秒）。

startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
p = subprocess.Popen(f'ffprobe -show_format -show_streams -of json "{file}"', startupinfo=startupinfo, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()

原文

Edit: In this specific example, Python 3.8 is being used on Windows 10.

I need to run FFprobe through subprocess.Popen so I can capture and parse the output. If I do this in a script, it runs almost instantly, but if I compile my script with PyInstaller and do the same thing, it takes over 0.8 seconds to complete. Is there a trick or any way I can execute it faster from the compiled script? I'm willing to hear FFprobe-specific answers if they exist.

This is what I'm using currently. The extra code is for ensuring FFprobe doesn't flash a console window while running (removing the console window actually made it 0.1 seconds faster on average).

startupinfo = subprocess.STARTUPINFO()
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
p = subprocess.Popen(f'ffprobe -show_format -show_streams -of json "{file}"', startupinfo=startupinfo, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
out, err = p.communicate()

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