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""" |
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ffmpeg_streaming._ffprobe |
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~~~~~~~~~~~~ |
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Probe the video |
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:copyright: (c) 2020 by Amin Yazdanpanah. |
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:website: https://www.aminyazdanpanah.com |
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:email: [email protected] |
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:license: MIT, see LICENSE for more details. |
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""" |
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import json |
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import logging |
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import subprocess |
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from ._media_property import Size, Bitrate |
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View Code Duplication |
class Streams: |
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def __init__(self, streams): |
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self.streams = streams |
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def video(self, ignore_error=True): |
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""" |
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@TODO: add documentation |
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""" |
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return self._get_stream('video', ignore_error) |
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def audio(self, ignore_error=True): |
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""" |
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@TODO: add documentation |
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""" |
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return self._get_stream('audio', ignore_error) |
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def first_stream(self): |
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""" |
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@TODO: add documentation |
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""" |
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return self.streams[0] |
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def all(self): |
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""" |
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@TODO: add documentation |
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""" |
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return self.streams |
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def videos(self): |
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""" |
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@TODO: add documentation |
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""" |
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return self._get_streams('video') |
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def audios(self): |
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""" |
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@TODO: add documentation |
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""" |
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return self._get_streams('audio') |
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def _get_stream(self, media, ignore_error): |
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""" |
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@TODO: add documentation |
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""" |
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media_attr = next((stream for stream in self.streams if stream['codec_type'] == media), None) |
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if media_attr is None and not ignore_error: |
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raise ValueError('No ' + str(media) + ' stream found') |
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return media_attr if media_attr is not None else {} |
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def _get_streams(self, media): |
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""" |
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@TODO: add documentation |
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""" |
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for stream in self.streams: |
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if stream['codec_type'] == media: |
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yield stream |
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class FFProbe: |
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def __init__(self, filename, cmd='ffprobe'): |
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""" |
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@TODO: add documentation |
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""" |
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commands = [cmd, '-show_format', '-show_streams', '-of', 'json', filename] |
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logging.info("ffprobe running command: {}".format(" ".join(commands))) |
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process = subprocess.Popen(commands, stdout=subprocess.PIPE, stderr=subprocess.PIPE) |
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self.out, err = process.communicate() |
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if process.returncode != 0: |
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logging.error(str(self.out) + str(err)) |
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raise RuntimeError('ffprobe', self.out, err) |
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logging.info("ffprobe executed command successfully!") |
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def streams(self): |
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""" |
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@TODO: add documentation |
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""" |
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return Streams(json.loads(self.out.decode('utf-8'))['streams']) |
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def format(self): |
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""" |
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@TODO: add documentation |
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""" |
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return json.loads(self.out.decode('utf-8'))['format'] |
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def all(self): |
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""" |
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@TODO: add documentation |
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""" |
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return json.loads(self.out.decode('utf-8')) |
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def save_as_json(self, path): |
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""" |
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@TODO: add documentation |
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""" |
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with open(path, 'w') as probe: |
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probe.write(self.out.decode('utf-8')) |
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@property |
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def video_size(self) -> Size: |
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""" |
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@TODO: add documentation |
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""" |
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width = int(self.streams().video().get('width', 0)) |
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height = int(self.streams().video().get('height', 0)) |
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if width == 0 or height == 0: |
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raise RuntimeError('It could not determine the value of width/height') |
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return Size(width, height) |
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@property |
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def bitrate(self, _type: str = "k") -> Bitrate: |
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""" |
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@TODO: add documentation |
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""" |
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overall = int(self.format().get('bit_rate', 0)) |
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video = int(self.streams().video().get('bit_rate', 0)) |
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audio = int(self.streams().audio().get('bit_rate', 0)) |
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if overall == 0: |
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raise RuntimeError('It could not determine the value of bitrate') |
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return Bitrate(video, audio, overall, type=_type) |
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__all__ = [ |
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'FFProbe' |
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] |
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aminyazdanpanah /
python-ffmpeg-video-streaming
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