Backport of "decklinksrc: Use a more accurate capture time" into 1.18
Backport of !2040 (merged) "decklinksrc: Use a more accurate capture time".
Commits:
- 6fe54f7f decklinksrc: Use a more accurate capture time
Backport of !2040 (merged) "decklinksrc: Use a more accurate capture time".
Commits: