youtube-dl -F https://www.youtube.com/watch?v=WdLSQ9MdGCI
[youtube] WdLSQ9MdGCI: Downloading webpage
[youtube] WdLSQ9MdGCI: Downloading video info webpage
[youtube] WdLSQ9MdGCI: Downloading MPD manifest
[info] Available formats for WdLSQ9MdGCI:
format code  extension  resolution note
139          m4a        audio only DASH audio   49k , m4a_dash container, mp4a.40.5@ 48k (22050Hz)
140          m4a        audio only DASH audio  130k , m4a_dash container, mp4a.40.2@128k (44100Hz)
251          webm       audio only DASH audio  157k , webm_dash container, opus @160k (48000Hz)
278          webm       256x144    DASH video   95k , webm_dash container, vp9, 25fps, video only
160          mp4        256x144    DASH video  108k , mp4_dash container, avc1.4d400b, 25fps, video only
242          webm       426x240    DASH video  220k , webm_dash container, vp9, 25fps, video only
133          mp4        426x240    DASH video  242k , mp4_dash container, avc1.4d400c, 25fps, video only
243          webm       640x360    DASH video  405k , webm_dash container, vp9, 25fps, video only
134          mp4        640x360    DASH video  589k , mp4_dash container, avc1.4d401e, 25fps, video only
244          webm       854x480    DASH video  752k , webm_dash container, vp9, 25fps, video only
135          mp4        854x480    DASH video 1150k , mp4_dash container, avc1.4d401e, 25fps, video only
43           webm       640x360    360p , vp8.0, vorbis@128k, 26.38MiB
18           mp4        640x360    360p  642k , avc1.42001E, mp4a.40.2@ 96k (44100Hz), 20.19MiB (best)