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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) 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 sys |
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from ._utiles import cnv_options_to_args, get_path_info, clean_args |
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def _stream2file(stream2file): |
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args = {'c': 'copy'} |
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args.update(stream2file.options) |
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return cnv_options_to_args(args) + [stream2file.output_] |
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def _get_dash_stream(key, rep): |
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args = { |
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'map': '0', |
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'b:v:' + str(key): rep.bitrate.normalize_video(), |
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'b:a:' + str(key): rep.bitrate.audio, |
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's:v:' + str(key): rep.size.normalize |
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} |
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return cnv_options_to_args(args) |
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def _dash(dash): |
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dirname, name = get_path_info(dash.output_) |
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init_args = { |
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'c:v': dash.format.video, |
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'c:a': dash.format.audio, |
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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_$RepresentationID$.$ext$', |
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"media_seg_name": name + '_chunk_$RepresentationID$_$Number%05d$.$ext$', |
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'f': 'dash' |
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} |
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init_args.update(dash.options) |
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args = cnv_options_to_args(init_args) |
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for key, rep in enumerate(dash.reps): |
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args += _get_dash_stream(key, rep) |
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return args + ['-strict', '-2', dirname + '/' + name + '.mpd'] |
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def _hls_seg_ext(hls): |
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return 'm4s' if hls.options.get('hls_segment_type', '') == 'fmp4' else 'ts' |
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def _get_hls_stream(hls, rep, dirname, name): |
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args = { |
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'c:v': hls.format.video, |
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'c:a': hls.format.audio, |
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's:v': rep.size.normalize, |
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'crf': '20', |
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'sc_threshold': '0', |
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'g': '48', |
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'keyint_min': '48', |
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'hls_list_size': '0', |
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'hls_time': '10', |
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'hls_allow_cache': '1', |
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'b:v': rep.bitrate.normalize_video(), |
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'b:a': rep.bitrate.audio, |
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'maxrate': rep.bitrate.max_rate, |
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'hls_segment_filename': dirname + "/" + name + "_" + str(rep.size.height) + "p_%04d." + _hls_seg_ext(hls), |
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'hls_fmp4_init_filename': name + "_init.mp4", |
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'strict': '-2' |
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} |
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args.update(hls.options) |
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return cnv_options_to_args(args) + [dirname + "/" + name + "_" + str(rep.size.height) + "p.m3u8"] |
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def _hls(hls): |
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dirname, name = get_path_info(hls.output_) |
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streams = [] |
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for rep in hls.reps: |
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streams += _get_hls_stream(hls, rep, dirname, name) |
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return streams |
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def stream_args(media): |
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return getattr(sys.modules[__name__], "_%s" % type(media).__name__.lower())(media) |
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def command_builder(ffmpeg_bin: str, media): |
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args = [ffmpeg_bin] + cnv_options_to_args(dict(media.media.input_opts)) + stream_args(media) |
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return " ".join(clean_args(args)) |
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aminyazdanpanah /
python-ffmpeg-video-streaming
