YouTube Movies 4K

[ytdlhelp]

When browsing "Free with ads" YouTube movies, I noticed that a few of them are said to be "4K" on search results page, e.g. Noah. I extracted three Widevine keys, but after running yt-dlp on it, I seen the following output:

ID  EXT   RESOLUTION FPS │   FILESIZE   TBR PROTO │ VCODEC        VBR ACODEC      ABR ASR MORE INFO
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────
sb3 mhtml 48x27        0 │                  mhtml │ images                                storyboard
sb2 mhtml 80x45        0 │                  mhtml │ images                                storyboard
sb1 mhtml 160x90       0 │                  mhtml │ images                                storyboard
sb0 mhtml 320x180      0 │                  mhtml │ images                                storyboard
293 mp4   audio only     │                  m3u8  │ audio only        unknown             DRM, Default, low
294 mp4   audio only     │                  m3u8  │ audio only        unknown             DRM, Default
295 mp4   audio only     │                  m3u8  │ audio only        unknown             DRM, Default, high
148 m4a   audio only     │ ~ 57.75MiB   59k https │ audio only        mp4a.40.5   59k 22k DRM, DASH audio, m4a_dash
149 m4a   audio only     │ ~137.23MiB  139k https │ audio only        mp4a.40.2  139k 44k DRM, DASH audio, m4a_dash
150 m4a   audio only     │ ~263.31MiB  267k https │ audio only        mp4a.40.2  267k 44k DRM, DASH audio, m4a_dash
281 mp4   256x144     24 │ ~217.57MiB  221k m3u8  │ avc1.4D400C  221k video only          DRM
161 mp4   256x144     24 │ ~147.47MiB  150k https │ avc1.4d400c  150k video only          DRM, DASH video, mp4_dash
282 mp4   426x240     24 │ ~398.96MiB  404k m3u8  │ avc1.4D4015  404k video only          DRM
142 mp4   426x240     24 │ ~302.66MiB  307k https │ avc1.4d4015  307k video only          DRM, DASH video, mp4_dash
283 mp4   640x360     24 │ ~856.95MiB  869k m3u8  │ avc1.4D401E  869k video only          DRM
143 mp4   640x360     24 │ ~634.58MiB  643k https │ avc1.4d401e  643k video only          DRM, DASH video, mp4_dash
284 mp4   854x480     24 │ ~  1.48GiB 1539k m3u8  │ avc1.4D401E 1539k video only          DRM
285 mp4   854x480     24 │ ~  2.07GiB 2148k m3u8  │ avc1.4D401E 2148k video only          DRM
286 mp4   854x480     24 │ ~  3.76GiB 3901k m3u8  │ avc1.4D401E 3901k video only          DRM
144 mp4   854x480     24 │ ~  1.13GiB 1172k https │ avc1.4d401e 1172k video only          DRM, DASH video, mp4_dash
222 mp4   854x480     24 │ ~  1.70GiB 1767k https │ avc1.4d401e 1767k video only          DRM, DASH video, mp4_dash
223 mp4   854x480     24 │ ~  3.36GiB 3484k https │ avc1.4d401e 3484k video only          DRM, DASH video, mp4_dash
287 mp4   1280x720    24 │ ~  2.69GiB 2797k m3u8  │ avc1.4D401F 2797k video only          DRM
288 mp4   1280x720    24 │ ~  3.93GiB 4079k m3u8  │ avc1.4D401F 4079k video only          DRM
289 mp4   1280x720    24 │ ~  6.06GiB 6290k m3u8  │ avc1.4D401F 6290k video only          DRM
145 mp4   1280x720    24 │ ~  2.31GiB 2403k https │ avc1.4d401f 2403k video only          DRM, DASH video, mp4_dash
224 mp4   1280x720    24 │ ~  3.52GiB 3655k https │ avc1.4d401f 3655k video only          DRM, DASH video, mp4_dash
225 mp4   1280x720    24 │ ~  5.61GiB 5824k https │ avc1.4d401f 5824k video only          DRM, DASH video, mp4_dash
290 mp4   1920x1080   24 │ ~  5.02GiB 5216k m3u8  │ avc1.640028 5216k video only          DRM
291 mp4   1920x1080   24 │ ~  6.35GiB 6597k m3u8  │ avc1.640028 6597k video only          DRM
292 mp4   1920x1080   24 │ ~  8.59GiB 8914k m3u8  │ avc1.640028 8914k video only          DRM
146 mp4   1920x1080   24 │ ~  4.60GiB 4772k https │ avc1.640028 4772k video only          DRM, DASH video, mp4_dash
226 mp4   1920x1080   24 │ ~  5.90GiB 6122k https │ avc1.640028 6122k video only          DRM, DASH video, mp4_dash
227 mp4   1920x1080   24 │ ~  8.08GiB 8392k https │ avc1.640028 8392k video only          DRM, DASH video, mp4_dash

Which suggest 1920x1080 is maximum quality. Why does it say 4K then? Is 4K version available elsewhere on YouTube? Is it required to purchase a license somehow to see 4K version?

[LZAA]

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