Where is the Video track showed in the Offical Help?

In the offical help and starting video
Video track (steinberg.help)
10:42 in How to Score to Video in Dorico | Getting Started with Dorico 2 (youtube.com)
I see there’s a video track and a “pattern” on it.However when I imported a video in my Dorico Pro 5 ,there’s not a video track.But I can find a video track in the Mixer.


Perhaps there’s something about the version because the offical help and video use Dorico 3 and 2.

Welcome to the forum, @xiaonuo25565. This changed with the revamp of Play mode in Dorico 4.

Oh thanks for your reply depreadbury
I am very used to make a transcription with the help of a visable and flexible audio or video track, especially confirming the tempo


Moving the bar-line to fit the waveform is more convient than adjusting the tempo track, i think

The “Video” tools seems powerful and i’m trying to use that