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desktop.media.audio-split-m4b: update to py3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| #!/usr/bin/env python | ||
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| import os, sys, re, math, json, subprocess as sp, datetime as dt | ||
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| err_fmt = lambda err: f'[{err.__class__.__name__}] {err}' | ||
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| class adict(dict): | ||
| def __init__(self, *args, **kws): | ||
| super().__init__(*args, **kws) | ||
| self.__dict__ = self | ||
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| def td_repr( ts, ts0=None, units_max=2, units_res=None, printf=None, | ||
| _units=dict(h=3600,m=60,s=1,y=365.25*86400,mo=30.5*86400,w=7*86400,d=1*86400) ): | ||
| if ts0 is None and isinstance(ts, dt.datetime): ts0 = dt.datetime.now() | ||
| delta = ts if ts0 is None else (ts - ts0) | ||
| if isinstance(delta, dt.timedelta): delta = delta.total_seconds() | ||
| res, s, n_last = list(), abs(delta), units_max - 1 | ||
| units = sorted(_units.items(), key=lambda v: v[1], reverse=True) | ||
| for unit, unit_s in units: | ||
| if not (val := math.floor(val_raw := s / unit_s)): | ||
| if units_res == unit: break | ||
| continue | ||
| elif val_raw - val > 0.98: val += 1 | ||
| if len(res) == n_last or units_res == unit: | ||
| val, n_last = round(s / unit_s), True | ||
| res.append(f'{val:.0f}{unit}') | ||
| if n_last is True: break | ||
| if (s := s - val * unit_s) < 1: break | ||
| if not res: return 'now' | ||
| res = ' '.join(res) | ||
| if printf: res = printf % res | ||
| return res | ||
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| title_subs = { | ||
| r'[\\/]': '_', r'^\.+': '_', r'[\x00-\x1f]': '_', r':': '-_', | ||
| r'<': '(', r'>': ')', r'\*': '+', r'[|!"]': '-', r'[\?\*]': '_', | ||
| '[\'’]': '', r'\.+$': '_', r'\s+$': '', r'\s': '_' } | ||
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| def title_subs_apply(title, _res=list()): | ||
| if title_subs and not _res: _res.extend((re.compile(k), v) for k,v in title_subs.items()) | ||
| for sub_re, sub in _res: title = sub_re.sub(sub, title) | ||
| return title | ||
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| def main(args=None): | ||
| import argparse | ||
| parser = argparse.ArgumentParser( | ||
| description='Split specified m4b audio file on chapters.' | ||
| ' Does not do any transcoding, which can be done on resulting aac files afterwards.') | ||
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| parser.add_argument('path', help='Path to source m4b file.') | ||
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| parser.add_argument('-n', '--name-format', | ||
| metavar='str.format', default='{n:03d}__{title}.aac', | ||
| help='Template for output filenames as python str.format template string.' | ||
| ' Can contain following keys: n, id, title, title_raw, a, b. Default: %(default)s.') | ||
| parser.add_argument('--name-format-raw', action='store_true', | ||
| help='Avoid doing any string replacements on filename (to make it more fs-friendly).') | ||
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| parser.add_argument('--dry-run', action='store_true', | ||
| help='Do not slice the file, just print output filenames.') | ||
| parser.add_argument('-d', '--debug', action='store_true', help='Verbose operation mode.') | ||
| opts = parser.parse_args(sys.argv[1:] if args is None else args) | ||
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| import logging | ||
| logging.basicConfig( | ||
| datefmt='%Y-%m-%d %H:%M:%S', | ||
| format='%(asctime)s :: %(name)s %(levelname)s :: %(message)s', | ||
| level=logging.DEBUG if opts.debug else logging.INFO ) | ||
| log = logging.getLogger() | ||
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| log.debug( 'Getting file chapter times with: %s', | ||
| ' '.join(cmd := [*'ffprobe -v 0 -output_format json -show_chapters'.split(), opts.path]) ) | ||
| meta = json.loads(sp.run(cmd, stdout=sp.PIPE, check=True).stdout) | ||
| meta = sorted(( adict( id=c.id, a=float(c.start_time), | ||
| b=float(c.end_time), title=(c.get('tags') or dict()).get('title') ) | ||
| for c in map(adict, meta['chapters']) ), key=lambda c: c.id) | ||
| log.debug('Parsed %s chapters from: %s', len(meta), opts.path) | ||
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| ts_fmt = '{:f}' | ||
| try: | ||
| if not all(int(c.title) == n for n, c in enumerate(meta, 1)): raise ValueError | ||
| log.info('Auto-labelling number-only chapters as "cXYZ"') | ||
| for c in meta: c.title = f'c{int(c.title):03,d}' | ||
| except: raise | ||
| for n, c in enumerate(meta, 1): | ||
| c.update(n=n, title_raw=c.title) | ||
| if not opts.name_format_raw: c.title = title_subs_apply(c.title) | ||
| dst_path = opts.name_format.format(**c) | ||
| log.info( 'Copying slice %s - %s [ start: %s, len: %s, title: %s ] to file: %s', | ||
| c.a, c.b, td_repr(c.a), td_repr(c.b - c.a), c.title_raw, dst_path ) | ||
| if not opts.dry_run: | ||
| sp.run([ 'ffmpeg', '-loglevel', 'warning', '-y', '-i', opts.path, '-acodec', 'copy', | ||
| '-ss', ts_fmt.format(c.a), '-to', ts_fmt.format(c.b), dst_path ], check=True) | ||
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| log.debug('Finished') | ||
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| if __name__ == '__main__': sys.exit(main()) |
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