Add a SFrame H264 experimental compatibility mode
Created attachment 415393 [details] Patch
Created attachment 415413 [details] Patch
Created attachment 415415 [details] Patch
Created attachment 415543 [details] Patch
Committed r270506: <https://trac.webkit.org/changeset/270506> All reviewed patches have been landed. Closing bug and clearing flags on attachment 415543 [details].
<rdar://problem/72049295>