Hello Giorgio,
1) Use the command disable to disable the Video element. Use a value of 0.01 if you want the overlay preventing participants from clicking the controls to be displayed with full transparency
(note that the experiment at your link currently does not work, and the debugger—which you should turn back on until you are ready to recruit your first real participant—throws errors like “No column named ‘VIDEO’ found in table A_FDS_noMask. Did you mean to type ‘AUDIO’?” or “No table found with name AV_FDS_cloth. Did you mean to type ‘AV_FDS_noMask’?”)
2) This must come from an extension installed on the participant’s browser, there’s no automatic translation feature in PCIbex
Jeremy