Update the latest version to avoid download errors.
Use:
$ youtube-dl --help
To see all youtube options
$ youtube-dl --list-formats [youtube video url]
[info] Available formats for [youtube video url]:
format code extension resolution note
249 webm audio only tiny 59k , opus @ 50k (48000Hz), 43.30MiB
250 webm audio only tiny 75k , opus @ 70k (48000Hz), 57.18MiB
140 m4a audio only tiny 137k , m4a_dash container, mp4a.40.2@128k (44100Hz), 111.75MiB
251 webm audio only tiny 145k , opus @160k (48000Hz), 116.17MiB
278 webm 256x144 144p 132k , webm container, vp9, 25fps, video only, 72.24MiB
160 mp4 256x144 144p 141k , avc1.4d400c, 25fps, video only, 95.43MiB
242 webm 426x240 240p 229k , vp9, 25fps, video only, 163.18MiB
133 mp4 426x240 240p 275k , avc1.4d4015, 25fps, video only, 211.09MiB
243 webm 640x360 360p 443k , vp9, 25fps, video only, 350.08MiB
134 mp4 640x360 360p 563k , avc1.4d401e, 25fps, video only, 465.65MiB
244 webm 854x480 480p 761k , vp9, 25fps, video only, 628.15MiB
135 mp4 854x480 480p 819k , avc1.4d401e, 25fps, video only, 685.90MiB
247 webm 1280x720 720p 1518k , vp9, 25fps, video only, 1.25GiB
136 mp4 1280x720 720p 2206k , avc1.4d401f, 25fps, video only, 1.80GiB
18 mp4 640x360 360p 738k , avc1.42001E, 25fps, mp4a.40.2@ 96k (44100Hz), 637.51MiB
22 mp4 1280x720 720p 2268k , avc1.64001F, 25fps, mp4a.40.2@192k (44100Hz) (best)
... (select the download format and indicate it in -f option):
$ youtube-dl -f 22 [youtube video url]
...
