kostya@aee3:~$ youtube-dl https://www.youtube.com/watch?v=CQ4YpkeG3mQ
[youtube] CQ4YpkeG3mQ: Downloading webpage
[youtube] CQ4YpkeG3mQ: Downloading video info webpage
[youtube] CQ4YpkeG3mQ: Extracting video information
[youtube] CQ4YpkeG3mQ: Downloading MPD manifest
WARNING: Requested formats are incompatible for merge and will be merged into mk
[download] Resuming download at byte 549981115
[download] Destination: 1. LINUX. Основы _ Технострим-CQ4YpkeG3mQ.f248.webm
[download] 100% of 1.08GiB in 02:34
[dashsegments] Total fragments: 586
[download] Destination: 1. LINUX. Основы _ Технострим-CQ4YpkeG3mQ.f140.m4a
[download] 100% of 88.50MiB in 00:43
[ffmpeg] Merging formats into "1. LINUX. Основы _ Технострим-CQ4YpkeG3mQ.mkv"
Deleting original file 1. LINUX. Основы _ Технострим-CQ4YpkeG3mQ.f248.webm (pass -k to keep)
Deleting original file 1. LINUX. Основы _ Технострим-CQ4YpkeG3mQ.f140.m4a (pass -k to keep)