I could video-record you could video-record he could video-record we could video-record you could video-record they could video-record
V-ing form
I could be video-recording you could be video-recording he could be video-recording we could be video-recording you could be video-recording they could be video-recording
Perfect
I could have video-recorded you could have video-recorded he could have video-recorded we could have video-recorded you could have video-recorded they could have video-recorded
V-ing perfect
I could have been video-recording you could have been video-recording he could have been video-recording we could have been video-recording you could have been video-recording they could have been video-recording
Negation
Simple form
I couldn't video-record you couldn't video-record he couldn't video-record we couldn't video-record you couldn't video-record they couldn't video-record
V-ing form
I couldn't be video-recording you couldn't be video-recording he couldn't be video-recording we couldn't be video-recording you couldn't be video-recording they couldn't be video-recording
Perfect
I couldn't have video-recorded you couldn't have video-recorded he couldn't have video-recorded we couldn't have video-recorded you couldn't have video-recorded they couldn't have video-recorded
V-ing perfect
I couldn't have been video-recording you couldn't have been video-recording he couldn't have been video-recording we couldn't have been video-recording you couldn't have been video-recording they couldn't have been video-recording
Interrogative form
Simple form
could I video-record? could you video-record? could he video-record? could we video-record? could you video-record? could they video-record?
V-ing form
could I be video-recording? could you be video-recording? could he be video-recording? could we be video-recording? could you be video-recording? could they be video-recording?
Perfect
could I have video-recorded? could you have video-recorded? could he have video-recorded? could we have video-recorded? could you have video-recorded? could they have video-recorded?
V-ing perfect
could I have been video-recording? could you have been video-recording? could he have been video-recording? could we have been video-recording? could you have been video-recording? could they have been video-recording?
Interro-negative form
Simple form
couldn't I video-record? couldn't you video-record? couldn't he video-record? couldn't we video-record? couldn't you video-record? couldn't they video-record?
V-ing form
couldn't I be video-recording? couldn't you be video-recording? couldn't he be video-recording? couldn't we be video-recording? couldn't you be video-recording? couldn't they be video-recording?
Perfect
couldn't I have video-recorded? couldn't you have video-recorded? couldn't he have video-recorded? couldn't we have video-recorded? couldn't you have video-recorded? couldn't they have video-recorded?
V-ing perfect
couldn't I have been video-recording? couldn't you have been video-recording? couldn't he have been video-recording? couldn't we have been video-recording? couldn't you have been video-recording? couldn't they have been video-recording?