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[FormatSort] Remove priority of `lang`

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pukkandan 2021-08-26 07:34:08 +05:30
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2
README.md
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@ -1203,7 +1203,7 @@ You can change the criteria for being considered the `best` by using `-S` (`--fo
Note that any other **numerical** field made available by the extractor can also be used. All fields, unless specified otherwise, are sorted in descending order. To reverse this, prefix the field with a `+`. Eg: `+res` prefers format with the smallest resolution. Additionally, you can suffix a preferred value for the fields, separated by a `:`. Eg: `res:720` prefers larger videos, but no larger than 720p and the smallest video if there are no videos less than 720p. For `codec` and `ext`, you can provide two preferred values, the first for video and the second for audio. Eg: `+codec:avc:m4a` (equivalent to `+vcodec:avc,+acodec:m4a`) sets the video codec preference to `h264` > `h265` > `vp9` > `vp9.2` > `av01` > `vp8` > `h263` > `theora` and audio codec preference to `mp4a` > `aac` > `vorbis` > `opus` > `mp3` > `ac3` > `dts`. You can also make the sorting prefer the nearest values to the provided by using `~` as the delimiter. Eg: `filesize~1G` prefers the format with filesize closest to 1 GiB. Note that any other **numerical** field made available by the extractor can also be used. All fields, unless specified otherwise, are sorted in descending order. To reverse this, prefix the field with a `+`. Eg: `+res` prefers format with the smallest resolution. Additionally, you can suffix a preferred value for the fields, separated by a `:`. Eg: `res:720` prefers larger videos, but no larger than 720p and the smallest video if there are no videos less than 720p. For `codec` and `ext`, you can provide two preferred values, the first for video and the second for audio. Eg: `+codec:avc:m4a` (equivalent to `+vcodec:avc,+acodec:m4a`) sets the video codec preference to `h264` > `h265` > `vp9` > `vp9.2` > `av01` > `vp8` > `h263` > `theora` and audio codec preference to `mp4a` > `aac` > `vorbis` > `opus` > `mp3` > `ac3` > `dts`. You can also make the sorting prefer the nearest values to the provided by using `~` as the delimiter. Eg: `filesize~1G` prefers the format with filesize closest to 1 GiB.
The fields `hasvid`, `ie_pref`, `lang` are always given highest priority in sorting, irrespective of the user-defined order. This behaviour can be changed by using `--force-format-sort`. Apart from these, the default order used is: `quality,res,fps,codec:vp9.2,size,br,asr,proto,ext,hasaud,source,id`. Note that the extractors may override this default order, but they cannot override the user-provided order. The fields `hasvid` and `ie_pref` are always given highest priority in sorting, irrespective of the user-defined order. This behaviour can be changed by using `--force-format-sort`. Apart from these, the default order used is: `lang,quality,res,fps,codec:vp9.2,size,br,asr,proto,ext,hasaud,source,id`. Note that the extractors may override this default order, but they cannot override the user-provided order.
If your format selector is `worst`, the last item is selected after sorting. This means it will select the format that is worst in all respects. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-f best -S +size,+br,+res,+fps`. If your format selector is `worst`, the last item is selected after sorting. This means it will select the format that is worst in all respects. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-f best -S +size,+br,+res,+fps`.

4
yt_dlp/extractor/common.py
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@ -1502,7 +1502,7 @@ class InfoExtractor(object):
default = ('hidden', 'aud_or_vid', 'hasvid', 'ie_pref', 'lang', 'quality', default = ('hidden', 'aud_or_vid', 'hasvid', 'ie_pref', 'lang', 'quality',
'res', 'fps', 'codec:vp9.2', 'size', 'br', 'asr', 'res', 'fps', 'codec:vp9.2', 'size', 'br', 'asr',
'proto', 'ext', 'hasaud', 'source', 'format_id') # These must not be aliases 'proto', 'ext', 'hasaud', 'source', 'format_id') # These must not be aliases
ytdl_default = ('hasaud', 'quality', 'tbr', 'filesize', 'vbr', ytdl_default = ('hasaud', 'lang', 'quality', 'tbr', 'filesize', 'vbr',
'height', 'width', 'proto', 'vext', 'abr', 'aext', 'height', 'width', 'proto', 'vext', 'abr', 'aext',
'fps', 'fs_approx', 'source', 'format_id') 'fps', 'fs_approx', 'source', 'format_id')
@ -1526,7 +1526,7 @@ class InfoExtractor(object):
'ie_pref': {'priority': True, 'type': 'extractor'}, 'ie_pref': {'priority': True, 'type': 'extractor'},
'hasvid': {'priority': True, 'field': 'vcodec', 'type': 'boolean', 'not_in_list': ('none',)}, 'hasvid': {'priority': True, 'field': 'vcodec', 'type': 'boolean', 'not_in_list': ('none',)},
'hasaud': {'field': 'acodec', 'type': 'boolean', 'not_in_list': ('none',)}, 'hasaud': {'field': 'acodec', 'type': 'boolean', 'not_in_list': ('none',)},
'lang': {'priority': True, 'convert': 'ignore', 'field': 'language_preference'}, 'lang': {'convert': 'ignore', 'field': 'language_preference'},
'quality': {'convert': 'float_none', 'default': -1}, 'quality': {'convert': 'float_none', 'default': -1},
'filesize': {'convert': 'bytes'}, 'filesize': {'convert': 'bytes'},
'fs_approx': {'convert': 'bytes', 'field': 'filesize_approx'}, 'fs_approx': {'convert': 'bytes', 'field': 'filesize_approx'},