sean@sean-XPS-13-9300:~$ youtube-dl https://www.youtube.com/watch?v=qgS4_SMkUzU
[youtube] qgS4_SMkUzU: Downloading webpage
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[download] Destination: Ultimate Tree World Hack No Jailbreak!!!-qgS4_SMkUzU.f271.webm
[download] 100% of 61.05MiB in 16:30
[download] Destination: Ultimate Tree World Hack No Jailbreak!!!-qgS4_SMkUzU.f140.m4a
[download] 100% of 7.54MiB in 02:02
[ffmpeg] Merging formats into "Ultimate Tree World Hack No Jailbreak!!!-qgS4_SMkUzU.mkv"
Deleting original file Ultimate Tree World Hack No Jailbreak!!!-qgS4_SMkUzU.f271.webm (pass -k to keep)
Deleting original file Ultimate Tree World Hack No Jailbreak!!!-qgS4_SMkUzU.f140.m4a (pass -k to keep)
sean@sean-XPS-13-9300:~$ youtube-dl https://youtu.be/zY7UaxVwmiE
[youtube] zY7UaxVwmiE: Downloading webpage
[youtube] zY7UaxVwmiE: Downloading player 8040e515
ERROR: unable to download video data: HTTP Error 403: Forbidden
sean@sean-XPS-13-9300:~$ youtube-dl https://www.youtube.com/watch?v=zY7UaxVwmiE
[youtube] zY7UaxVwmiE: Downloading webpage
[download] Destination: Tree world critter giveaway 2016-zY7UaxVwmiE.f137.mp4
[download] 100% of 42.89MiB in 09:40
[download] Destination: Tree world critter giveaway 2016-zY7UaxVwmiE.f140.m4a
[download] 100% of 4.80MiB in 01:05
[ffmpeg] Merging formats into "Tree world critter giveaway 2016-zY7UaxVwmiE.mp4"
Deleting original file Tree world critter giveaway 2016-zY7UaxVwmiE.f137.mp4 (pass -k to keep)
Deleting original file Tree world critter giveaway 2016-zY7UaxVwmiE.f140.m4a (pass -k to keep)
sean@sean-XPS-13-9300:~$ youtube-dl https://youtu.be/RvHrUbIE-Qk
[youtube] RvHrUbIE-Qk: Downloading webpage
[download] Destination: Playforge - Zombie Life Trailer-RvHrUbIE-Qk.f136.mp4
[download] 100% of 10.20MiB in 02:32
[download] Destination: Playforge - Zombie Life Trailer-RvHrUbIE-Qk.f140.m4a
[download] 100% of 1.01MiB in 00:15
[ffmpeg] Merging formats into "Playforge - Zombie Life Trailer-RvHrUbIE-Qk.mp4"
Deleting original file Playforge - Zombie Life Trailer-RvHrUbIE-Qk.f136.mp4 (pass -k to keep)
Deleting original file Playforge - Zombie Life Trailer-RvHrUbIE-Qk.f140.m4a (pass -k to keep)
sean@sean-XPS-13-9300:~$ youtube-dl https://youtu.be/Qh0UHbAqGpE
[youtube] Qh0UHbAqGpE: Downloading webpage
WARNING: Requested formats are incompatible for merge and will be merged into mkv.
[download] Destination: Tree World All Critters-Qh0UHbAqGpE.f315.webm
[download] 100% of 167.55MiB in 51:05
[download] Destination: Tree World All Critters-Qh0UHbAqGpE.f140.m4a
[download] 100% of 3.43MiB in 01:02
[ffmpeg] Merging formats into "Tree World All Critters-Qh0UHbAqGpE.mkv"
Deleting original file Tree World All Critters-Qh0UHbAqGpE.f315.webm (pass -k to keep)
Deleting original file Tree World All Critters-Qh0UHbAqGpE.f140.m4a (pass -k to keep)
sean@sean-XPS-13-9300:~$ youtube-dl https://youtu.be/9evgxZeIxMY
[youtube] 9evgxZeIxMY: Downloading webpage
[download] Destination: Tree world gameplay-9evgxZeIxMY.f308.webm
[download] 100% of 144.41MiB in 37:26
[download] Destination: Tree world gameplay-9evgxZeIxMY.f251.webm
[download] 100% of 9.00MiB in 03:02
[ffmpeg] Merging formats into "Tree world gameplay-9evgxZeIxMY.webm"
Deleting original file Tree world gameplay-9evgxZeIxMY.f308.webm (pass -k to keep)
Deleting original file Tree world gameplay-9evgxZeIxMY.f251.webm (pass -k to keep)
sean@sean-XPS-13-9300:~$