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""" |
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ffmpeg_streaming.media |
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~~~~~~~~~~~~ |
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Media object to build a stream objects |
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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 abc |
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import os |
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import shutil |
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import tempfile |
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import atexit |
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from abc import ABC |
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from ._clouds import CloudManager |
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from ._command_builder import command_builder |
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from ._format import Format |
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from ._hls_helper import HLSKeyInfoFile, HLSMasterPlaylist |
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from ._process import Process |
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from ._reperesentation import Representation, AutoRep |
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from ._utiles import mkdir |
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from .ffprobe import FFProbe |
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class Save(abc.ABC): |
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def __init__(self, media, _format: Format, **options): |
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atexit.register(self.finish_up) |
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self.output_ = '' |
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self.key = None |
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self.media = media |
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self.format = _format |
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self.options = options |
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self.pipe = None |
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self.output_temp = False |
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def finish_up(self): |
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if self.media.input_temp: |
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os.remove(self.media.input) |
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if self.output_temp: |
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shutil.rmtree(os.path.dirname(str(self.output_)), ignore_errors=True) |
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@abc.abstractmethod |
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def set_up(self): |
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pass |
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def __getattr__(self, name): |
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def method(*args, **kwargs): |
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if name in ['save', 'package']: |
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self.output(*args, **kwargs) |
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else: |
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raise AttributeError("The object has no attribute {}".format(name)) |
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return method |
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def output(self, output: str = None, clouds: CloudManager = None, monitor: callable = None, ffmpeg_bin: str = 'ffmpeg', **options): |
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if output is None and clouds is None: |
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self.output_ = self.media.input |
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elif clouds is not None: |
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self.output_temp = True |
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basename = os.path.basename(output if output is not None else self.media.input) |
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self.output_ = os.path.join(tempfile.mkdtemp(prefix='ffmpeg_streaming_'), basename) |
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else: |
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mkdir(os.path.dirname(output)) |
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self.output_ = output |
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self.set_up() |
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self._run(ffmpeg_bin, monitor, **options) |
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if clouds is not None: |
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clouds.transfer('upload_directory', os.path.dirname(self.output_)) |
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if output is not None and self.output_temp: |
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shutil.move(os.path.dirname(self.output_), os.path.dirname(output)) |
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def _run(self, ffmpeg_bin, monitor: callable = None, **options): |
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with Process(self, command_builder(ffmpeg_bin, self), monitor, **options) as process: |
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self.pipe, err = process.run() |
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class Streaming(Save, ABC): |
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def __init__(self, media, _format: Format, **options): |
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self.reps = list |
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super(Streaming, self).__init__(media, _format, **options) |
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def representations(self, *reps: Representation): |
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self.reps = list(reps) |
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def auto_generate_representations(self, heights=None, bitrate=None, ffprobe_bin='ffprobe'): |
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probe = FFProbe(self.media.input, ffprobe_bin) |
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self.reps = AutoRep(probe.video_size, probe.bitrate, self.format, heights, bitrate) |
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class DASH(Streaming): |
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def set_up(self): |
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pass |
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def generate_hls_playlist(self): |
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self.options.update({'hls_playlist': "1"}) |
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class HLS(Streaming): |
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KEY_INFO_FILE_PATH = None |
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def set_up(self): |
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HLSMasterPlaylist.generate(self) |
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def encryption(self, path: str, url: str, key_rotation_period: int = 0, needle: str = ".ts' for writing", length: int = 16): |
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with tempfile.NamedTemporaryFile(mode='w', suffix='_py_ff_vi_st.tmp', delete=False) as key_info: |
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HLS.KEY_INFO_FILE_PATH = key_info.name |
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key_info_file = HLSKeyInfoFile(HLS.KEY_INFO_FILE_PATH, path, url, key_rotation_period, needle, length) |
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self.options.update({'hls_key_info_file': str(key_info_file)}) |
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if key_rotation_period > 0: |
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setattr(self, 'key_rotation', key_info_file) |
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self.flags('periodic_rekey') |
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def fragmented_mp4(self): |
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self.options.update({'hls_segment_type': 'fmp4'}) |
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def flags(self, *flags: str): |
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hls_flags = self.options.pop('hls_flags', None) |
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hls_flags = hls_flags + "+" + "+".join(list(flags)) if hls_flags is not None else "+".join(list(flags)) |
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self.options.update({'hls_flags': hls_flags}) |
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def finish_up(self): |
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if HLS.KEY_INFO_FILE_PATH is not None: |
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shutil.rmtree(HLS.KEY_INFO_FILE_PATH, ignore_errors=True) |
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super(HLS, self).finish_up() |
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class Stream2File(Save): |
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def set_up(self): |
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pass |
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class Media(object): |
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def __init__(self, input_opts): |
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options = dict(input_opts) |
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self.input = options.get('i', None) |
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self.input_temp = options.pop('is_tmp', False) |
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self.input_opts = options |
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def hls(self, _format: Format, **options): |
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return HLS(self, _format, **options) |
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def dash(self, _format: Format, **options): |
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return DASH(self, _format, **options) |
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def stream2file(self, _format: Format, **options): |
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return Stream2File(self, _format, **options) |
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aminyazdanpanah /
python-ffmpeg-video-streaming
