Todd Spangler NY Digital EditorYouTube’s revenue growth cooled in the second quarter of 2020, but even with the COVID-19 pandemic Google’s internet video platform carved out year-over-year growth of 5.8%. Alphabet, Google’s parent company, posted a 2% decline in revenue while it still topped Wall Street estimates.For Q2, YouTube’s ad revenue was $3.81 billion, up from $3.60 billion in the year-ago period.