Diary on 2025-04-27
2025-04-27 Sunday ☀️
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袋鼠数学竞赛成绩
今天是袋鼠数学竞赛成绩出来的日子,下午我在手机上看到通知,马上就去查询了,儿子烤了103分,获得银奖,与金奖以一分之差失之交臂,不过这也很不错,这是他数学的第一个奖项,希望他能够继续努力。

根据今年Level A的总体成绩,104就是金奖,但是儿子刚好103,没能晋级,不过这也不错,我也很高兴也很激动。
yt-dlp Tips
today I want to download all videos from a channel, both have two audio tracks and subtitles, such as English and Chinese. search internet find the tip that we can use following parameters in ~/.config/yt-dlp/config
--audio-multistreams -f bv+ba[language=zh-Hans]+ba[language=en-US]--embed-subs --write-auto-subs --sub-langs en,zh-Hansthe full parameters are as follows:
-o '%(playlist_index|001)s-%(title)s.%(ext)s'--embed-subs --sub-langs en,zh-Hans--audio-multistreams -f bv+ba[language=zh-Hans]+ba[language=en-US]--merge-output-format mp4--download-archive downloaded.txt-ciw--sleep-requests 1.5Back to Diary
-ciw: Skips videos that are not available (e.g., private videos).--embed-subs --sub-langs en,zh-Hans: download and embed the subtitles--audio-multistreams -f bv+ba[language=zh-Hans]+ba[language=en-US]: download English and Chinese audio tracks, if it only have one track, we can just use--audio-multistreams -f bv+ba--download-archive downloaded.txt: saves to a file what videos have already been downloaded and to not do it again.
