[ndr:base:embed] Improve thumbnails extraction (closes #23731)
[ndr:base:embed] Improve thumbnails extraction (closes #23731)

rg3/youtube-dl,yan12125/youtube-dl,Tatsh/youtube-dl,Orochimarufan/youtube-dl,rg3/youtube-dl,ozburo/youtube-dl,vinegret/youtube-dl,remitamine/youtube-dl,remitamine/youtube-dl,Orochimarufan/youtube-dl,Tatsh/youtube-dl,nyuszika7h/youtube-dl,spvkgn/youtube-dl,ozburo/youtube-dl,yan12125/youtube-dl,nyuszika7h/youtube-dl,spvkgn/youtube-dl,vinegret/youtube-dl