65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
"""
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This file here was created from multiple parts of ffmpeg-python
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"""
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import json
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import subprocess
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import sys
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try:
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from collections.abc import Iterable
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except ImportError:
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from collections import Iterable
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def convert_kwargs_to_cmd_line_args(kwargs):
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"""Helper function to build command line arguments out of dict."""
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args = []
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for k in sorted(kwargs.keys()):
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v = kwargs[k]
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if isinstance(v, Iterable) and not isinstance(v, str):
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for value in v:
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args.append('-{}'.format(k))
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if value is not None:
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args.append('{}'.format(value))
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continue
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args.append('-{}'.format(k))
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if v is not None:
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args.append('{}'.format(v))
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return args
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class Error(Exception):
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def __init__(self, cmd, stdout, stderr):
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super(Error, self).__init__(
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'{} error (see stderr output for detail)'.format(cmd)
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)
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self.stdout = stdout
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self.stderr = stderr
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def probe(filename, cmd='ffprobe', timeout=None, **kwargs):
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"""Run ffprobe on the specified file and return a JSON representation of the output.
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Raises:
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:class:`ffmpeg.Error`: if ffprobe returns a non-zero exit code,
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an :class:`Error` is returned with a generic error message.
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The stderr output can be retrieved by accessing the
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``stderr`` property of the exception.
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"""
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args = [cmd, '-show_format', '-show_streams', '-of', 'json']
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args += convert_kwargs_to_cmd_line_args(kwargs)
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args += [filename]
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if ( sys.platform == 'win32' ):
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p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
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else:
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p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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communicate_kwargs = {}
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if timeout is not None:
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communicate_kwargs['timeout'] = timeout
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out, err = p.communicate(**communicate_kwargs)
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if p.returncode != 0:
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raise Error('ffprobe', out, err)
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return json.loads(out.decode('utf-8'))
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__all__ = ['probe']
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