MKBHD raises concerns over YouTube's video A/B testing feature

YouTube announced an A/B testing feature that lets creators compare different cuts of a video, not just titles and thumbnails. Marques Brownlee (MKBHD) questioned how it will work for viewers, including whether they'll be told they're in a test and how timestamps in comments will behave.

• YouTube expanded A/B testing from titles and thumbnails to video cuts
• MKBHD says many questions about the feature remain unanswered
• He asked whether comment timestamps break when a different cut is shown
• Unclear how long tests can run after publishing and how different versions can be