VideoBlockEditor:Poster Modal

Build 4622 on 23-01-DC-feat-image-source
1200px
Reviewing disabled
Baseline History
Build 4622f4cda93
Current build. There are unaccepted changes, so build 3684 is still the baseline.
Build 2974a810b55
Accepted by John Geronimo.
Build 2454e85a3d0
Auto-accepted
Build 2406d1c9128
Auto-accepted
Commenting is disabled because there's a newer build on this branch