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""" |
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ffmpeg_streaming.build_args |
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~~~~~~~~~~~~ |
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Build a command for the FFmpeg |
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:copyright: (c) 2019 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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from .utiles import get_path_info |
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from .rep import Representation |
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def _get_hls_args(hls): |
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dirname, name = get_path_info(hls.output) |
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args = [] |
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for key, rep in enumerate(hls.reps): |
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if isinstance(rep, Representation): |
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if hls.options is not None: |
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for option in hls.options: |
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args += ['-' + option, str(hls.options[option])] |
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if key > 0: |
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args += ['-c:v', hls.video_format] |
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if hls.audio_format is not None: |
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args += ['-c:a', hls.audio_format] |
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args += ['-s:v', rep.size] |
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args += ['-crf', '20'] |
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args += ['-sc_threshold', '0'] |
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args += ['-g', '48'] |
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args += ['-keyint_min', '48'] |
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args += ['-hls_list_size', str(hls.hls_list_size)] |
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args += ['-hls_time', str(hls.hls_time)] |
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args += ['-hls_allow_cache', str(hls.hls_allow_cache)] |
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args += ['-b:v', rep.bit_rate] |
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if rep.audio_bit_rate is not None: |
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args += ['-b:a', rep.audio_bit_rate] |
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args += ['-maxrate', str(round(rep.kilo_bitrate * 1.2)) + "k"] |
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args += ['-hls_segment_filename', dirname + "/" + name + "_" + str(rep.height) + "p_%04d.ts"] |
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if hls.hls_key_info_file is not None: |
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args += ['-hls_key_info_file', hls.hls_key_info_file.replace("\\", "/")] |
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args += ['-strict', hls.options.get('strict', "-2")] |
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args += [dirname + "/" + name + "_" + str(rep.height) + "p.m3u8"] |
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return args |
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def _get_dash_args(dash): |
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dirname, name = get_path_info(dash.output) |
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args = [ |
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'-bf', '1', |
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'-keyint_min', '120', |
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'-g', '120', |
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'-sc_threshold', '0', |
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'-b_strategy', '0', |
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'-use_timeline', '1', |
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'-use_template', '1', |
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'-init_seg_name', (name + '_init_$RepresentationID$.$ext$') if dash.init_seg_name is None else dash.init_seg_name, |
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"-media_seg_name", (name + '_chunk_$RepresentationID$_$Number%05d$.$ext$') if dash.media_seg_name is None else dash.media_seg_name, |
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'-f', 'dash' |
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] |
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if dash.options is not None: |
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for option in dash.options: |
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args += ['-' + option, str(dash.options[option])] |
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for key, rep in enumerate(dash.reps): |
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if isinstance(rep, Representation): |
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args += ['-map', '0'] |
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args += ['-b:v:' + str(key), rep.bit_rate] |
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if rep.audio_bit_rate is not None: |
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args += ['-b:a:' + str(key), rep.audio_bit_rate] |
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args += ['-s:v:' + str(key), rep.size] |
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if dash.adaption is not None: |
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args += ['-adaptation_sets', dash.adaption] |
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args += ['-strict', dash.options.get('strict', "-2")] |
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args += ['"' + dirname + '/' + name + '.mpd"'] |
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return args |
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def _get_stream2file_args(stream2file): |
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args = ['-c', 'copy'] |
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if stream2file.options is not None: |
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for option in stream2file.options: |
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args += ['-' + option, str(stream2file.options[option])] |
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args += ['"' + stream2file.output + '"'] |
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return args |
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def build_command(cmd, media_obj): |
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if type(cmd) != list: |
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cmd = [cmd] |
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cmd += ['-y', '-i', '"' + media_obj.filename.replace("\\", "/") + '"'] |
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cmd += ['-c:v', media_obj.video_format] |
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if media_obj.audio_format is not None: |
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cmd += ['-c:a', media_obj.audio_format] |
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media_name = type(media_obj).__name__ |
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if media_name == 'HLS': |
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cmd += _get_hls_args(media_obj) |
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elif media_name == 'DASH': |
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cmd += _get_dash_args(media_obj) |
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elif media_name == 'StreamToFile': |
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cmd += _get_stream2file_args(media_obj) |
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return " ".join(cmd) |
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aminyazdanpanah /
python-ffmpeg-video-streaming
