subtitles not in mkv file

[KevinMcCready]

 $ youtube-dl -v https://youtu.be/6ZavARcYf9s
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v', u'https://youtu.be/6ZavARcYf9s']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.10.12
[debug] Python version 2.7.12 - Linux-4.4.0-21-generic-i686-athlon-with-LinuxMint-18-sarah
[debug] exe versions: ffmpeg 2.8.6-1ubuntu2, ffprobe 2.8.6-1ubuntu2
[debug] Proxy map: {}
[youtube] 6ZavARcYf9s: Downloading webpage
[youtube] 6ZavARcYf9s: Downloading video info webpage
[youtube] 6ZavARcYf9s: Extracting video information
[youtube] 6ZavARcYf9s: Downloading MPD manifest
WARNING: Requested formats are incompatible for merge and will be merged into mkv.

[yan12125]

You need to add --embed-subs --write-sub to your command.

[KevinMcCready]

The email I got wasn't clear. Now that I've come back to the website I see what needs doing and will try.