To quick zoom in/out the timecode track of a sequence, do the following:

1. Use the ‘+’and ‘-’ hotkeys to zoom in or out the timecode track horizontally;

2. Use the left mouse button to select the start and end point of the zoom marker on the time scale, and then you can drag them to zoom in/out the timecode track infinitely;

3. Double click a zoom marker to quick zoom in or restore the display ratio of the track

                                     

4. Right click and hold on the time scale and drag it rightward to create a purple bar on the scale, release the mouse, and the system will zoom in the purple area as the seuquence edit area automatically;

5. Left click and hold on the time scale, drag it leftward, release the mouse, and the system will zoom out automatically