如何以编程方式确定视频文件是否仅音频

问题描述：

获取以下两个视频文件，每两分钟一次:

Take the following two video files, each two minutes long:

1)仅音频: 2)音频和视频:我如何编写命令来告诉我视频文件中是否有视频轨道?例如:

How would I write a command to tell me if the video file has a video track? For example:

cmd = shlex.split('ffprobe -i %s' % video_path)
p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output = p.communicate()[1]
if 'something' in ouput: # ?
    audio_only = True
else:
    audio_only = False

答

只使用ffmpeg，在输出中您可以看到所有流，然后可以使用正则表达式查找视频流并对其进行调节.

Just use ffmpeg, in the output you can see all the streams and than you can use regex to find video stream and condition on it.

import re 
videostream=re.compile( r"Stream #\d*\:\d*\s*Video")
cmd = shlex.split('ffmpeg -i %s' % video_path) 
p = subprocess.Popen(cmd,     stdout=subprocess.PIPE, stderr=subprocess.PIPE) 
output = p.communicate()[1] 
if not videostream.match(output): # !
    audio_only = True 
else: audio_only = False

如何以编程方式确定视频文件是否仅音频

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