79 lines
2.3 KiB
Python
79 lines
2.3 KiB
Python
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import os
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import subprocess
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import time
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from . import res
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DEFAULT_PARAMS_AV1 = "tune=0"
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PRESETS_AV1 = [str(i) for i in range(6, 3, -1)]
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CRFS_AV1 = [str(i) for i in range(30, 9, -1)]
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def get_encoding_command_av1(f, preset, crf):
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filenameSample = os.path.splitext(os.path.basename(f))[0]
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filenameEncode = ".".join(
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[
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filenameSample,
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'AV1',
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'10Bit',
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'Preset',
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f'{preset}',
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'CRF',
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f'{crf}',
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'mkv'
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]
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)
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filepathEncode = os.path.join(res.get_path_data_encodes_av1(), filenameEncode)
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cmd_parts = [
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'ffmpeg',
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f'-i "{f}"',
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'-an',
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'-c:v libsvtav1',
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f'-preset {preset}',
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f'-crf {crf}',
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f'-svtav1-params "{DEFAULT_PARAMS_AV1}"',
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f'-pix_fmt yuv420p10le',
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'-g 245',
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'-y',
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f'"{filepathEncode}"'
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]
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return " ".join(cmd_parts)
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def start_workflow():
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res.bootstrap_folder_structure()
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path_results_encoding_time_av1_json = os.path.join(
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res.get_path_results_encoding_time(),
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res.get_filename_results_encoding_time_av1()
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)
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results_encoding_time_av1 = res.read_dict_from_json_file(
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path_results_encoding_time_av1_json
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)
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for preset in PRESETS_AV1:
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if not preset in results_encoding_time_av1.keys():
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results_encoding_time_av1[preset] = {}
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for crf in CRFS_AV1:
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if not crf in results_encoding_time_av1[preset].keys():
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results_encoding_time_av1[preset][crf] = {}
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for f in res.get_all_sample_files():
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filename = os.path.splitext(os.path.basename(f))[0]
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if filename in results_encoding_time_av1[preset][crf].keys():
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continue
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time_start = time.time()
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subprocess.run(
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get_encoding_command_av1(f, preset, crf),
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shell=True,
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check=True
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)
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time_encoding = round(time.time() - time_start)
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results_encoding_time_av1[preset][crf][filename] = time_encoding
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res.write_dict_to_json_file(
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path_results_encoding_time_av1_json,
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results_encoding_time_av1
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)
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