For lengthy interviews: YouTube tests accelerated playback function up to 4x
Premium subscribers can now use playback speed of up to 4x, instead of the previous 2x. The speed change interval is 0.05. Available in apps on iOS and Android, but not yet functional in the browser.
Initially, the feature needs to be enabled in the experimental features section of YouTube. Testing will be conducted until February 26. After that, the feature will either exit beta status or YouTube will discard it.
Other recent experimental features that Premium subscribers can try include high-quality audio for music videos (until February 22, on iOS and Android), as well as Shorts videos in picture-in-picture mode (until February 19, only on iOS).