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[ie/youtube] Calculate more accurate filesize

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YouTube provides slightly different duration for each format.
Calculating file-size based on this duration instead of the
video duration gives more accurate results.

Ref: https://github.com/yt-dlp/yt-dlp/issues/1400#issuecomment-2007441207
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pukkandan 2024-04-01 02:20:03 +05:30
parent 86e3b82261
commit a25a424323
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6
yt_dlp/extractor/youtube.py
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@ -33,6 +33,7 @@
clean_html,
datetime_from_str,
dict_get,
filesize_from_tbr,
filter_dict,
float_or_none,
format_field,
@ -55,6 +56,7 @@
str_to_int,
strftime_or_none,
traverse_obj,
try_call,
try_get,
unescapeHTML,
unified_strdate,
@ -3839,11 +3841,12 @@ def build_fragments(f):
10 if audio_track.get('audioIsDefault') and 10
else -10 if 'descriptive' in (audio_track.get('displayName') or '').lower() and -10
else -1)
format_duration = traverse_obj(fmt, ('approxDurationMs', {lambda x: float_or_none(x, 1000)}))
# Some formats may have much smaller duration than others (possibly damaged during encoding)
# E.g. 2-nOtRESiUc Ref: https://github.com/yt-dlp/yt-dlp/issues/2823
# Make sure to avoid false positives with small duration differences.
# E.g. __2ABJjxzNo, ySuUZEjARPY
is_damaged = try_get(fmt, lambda x: float(x['approxDurationMs']) / duration < 500)
is_damaged = try_call(lambda: format_duration < duration // 2)
if is_damaged:
self.report_warning(
f'{video_id}: Some formats are possibly damaged. They will be deprioritized', only_once=True)
@ -3873,6 +3876,7 @@ def build_fragments(f):
'quality': q(quality) - bool(fmt.get('isDrc')) / 2,
'has_drm': bool(fmt.get('drmFamilies')),
'tbr': tbr,
'filesize_approx': filesize_from_tbr(tbr, format_duration),
'url': fmt_url,
'width': int_or_none(fmt.get('width')),
'language': join_nonempty(audio_track.get('id', '').split('.')[0],