select English Sub (if unavailable--> automatically go for auto caption)

[ParsaFakhar]

Download a Single Video with Embedded Subtitle, En lang Sub

youtube-dl -v -f mp4 --write-sub --sub-lang en --sub-format ttml --convert-subtitles srt --embed-subs https://www.youtube.com/watch?v=F0c8U3x_vKM

Download a Single Video with Embedded Subtitle (Auto-Caption)

youtube-dl -v -f mp4 --write-auto-sub --sub-format ttml --convert-subtitles srt --embed-subs https://www.youtube.com/watch?v=Uiy_YuE8lCA

iSSUE: BUT how to tell youtube-dl to look for written Sub first and if there wasn't any the use auto-caption?

(for example PewDiePie uses his own sub if I write --write-auto-sub I would lose his sub)
and if I write --write-sub (if there wasn't any I would lose the chance to download auto-caption)

[dstftw]

By using --write-sub and --write-auto-sub at the same time.

[ParsaFakhar]

@dstftw I tried but it didn't work