This however only wrote the 'verbose' output to all-subs.txt and just downloaded the *.vtt format subs (I don't know why youtube-dl won't download in any other format, even if told to do so, a glitch still unresolved).
This however only wrote the 'verbose' output to all-subs.txt and just downloaded the *.vtt format subs (I don't know why youtube-dl won't download in any other format, even if told to do so, a glitch still unresolved).