Question

我一直在尝试用python 2.7实现一个函数，该命令将命令传递给cli以使用ffmpeg转换视频，直到现在效果非常好，问题是有时会引发IOError：[Errno 32]管道损坏，我我不知道为什么会这样。你能帮我吗？

这是我向cli传递命令的功能：

def _cli(cmd):
    # TODO validate function
    errors = False
    import subprocess
    try:
        p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
        stdoutdata, stderrdata = p.communicate()
        if p.wait() != 0:
            # Handle error / raise exception
            # errors used to know conversion success or not
            errors = True
        print stderrdata
        return stdoutdata, stderrdata, errors
    except OSError as e:
        print 'error'
        traceback.print_exc()
        return e.strerror, e.strerror, errors

这就是我所说的：

c = '/usr/bin/ffmpeg -hide_banner -nostats -i /home/user/original/390f8455-8657-4452-9fd9-0167d1025389.flv -c:v libx264 -c:a aac -strict -2 /home/user/original/390f8455-8657-4452-9fd9-0167d1025389.mp4'
print 'Converting command: %s' % c
stdoutdata, stderrdata, errors = _cli(c)
if errors:
        print 'Converting video error'
        # obj is django object
        obj.convert_status = 'error'
        obj.msg = stderrdata

这是一个例外：

Traceback (most recent call last):
  File "/home/user/myapp/env/local/lib/python2.7/site-packages/rq/worker.py", line 799, in perform_job
    rv = job.perform()
  File "/home/user/myapp/env/local/lib/python2.7/site-packages/rq/job.py", line 600, in perform
    self._result = self._execute()
  File "/home/user/myapp/env/local/lib/python2.7/site-packages/rq/job.py", line 606, in _execute
    return self.func(*self.args, **self.kwargs)
  File "/home/user/myapp/cffmpeg/task.py", line 79, in convert_video
    stdoutdata, stderrdata, errors = _cli(c)
  File "/home/user/myapp/cffmpeg/task.py", line 216, in _cli
    print stderrdata 
IOError: [Errno 32] Broken pipe

第79行是我调用函数的地方，而第216行是我打印stderrdata的函数中的

IOError：[Errno 32]使用Popen运行命令时管道损坏

0 个答案: