Yeah, it's essentially used as a javascript expression solver. You can see the full extent of its capabilities in the testsuite: https://github.com/ytdl-org/you

Yeah, it's essentially used as a javascript expression solver. You can see the full extent of its capabilities in the testsuite: https://github.com/ytdl-org/youtube-dl/blob/master/test/test_jsinterp.py https://github.com/ytdl-org/youtube-dl/blob/master/test/test... The specific site modules in youtube-dl will take care to extract the bare minimum necessary to solve whatever challenge.