Safari in ios 11.3 added <img src=mp4> support and 'video/*' to the Accept header. Safari for macOS properly displays this content. However, ios returns an empty box and does not render the looping mp4. For example: https://codepen.io/team/Cloudinary/pen/NMRMEx <img src="https://colinbendell.cloudinary.com/image/upload/c_crop,f_mp4,g_auto,h_350,w_400/v1512090972/Wizard-Clap-by-Markus-Magnusson.mp4">
<rdar://problem/39771989>
Created attachment 339136 [details] Patch
Comment on attachment 339136 [details] Patch Clearing flags on attachment: 339136 Committed r231179: <https://trac.webkit.org/changeset/231179>
All reviewed patches have been landed. Closing bug.