如果在脚本中使用ncftpls，可能需要捕捉输出。
If you are using NCFTPLS in a script, you will probably need to capture the output.
我使用了一个消费级摄像机，它使用复合（标准）视频线将输出发送到视频捕捉卡。
I used a consumer-grade camcorder that sent its output to the video capture card using a composite (standard) video cable.
您可能希望捕捉所遇到的所有异常，然后输出这些异常以便调试。
You probably want to trap any exceptions that are encountered and output them for debugging purposes.
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