After importing the required material file in Premiere Pro CC 2018, you can edit the material. You can generally make initial edits to the material in the Source monitor and then connect the material in the Timeline window. How to import audio and video files in 0Premiere Pro
Premiere Pro CC 2018
windows 7/8/10
Start the Premiere program and add the image material required by the user in the [source] monitor.
Mark the entry point in the monitor: In the [source] monitor, you can set the entry point time of the video by setting the time 00:00:00:00 or directly dragging the playback pointer.
Click the "Mark Entry" button below the [source] monitor to set the entry point of the video file, which is where the clip starts.
Mark a point in the monitor: In the [source] monitor, you can set the point time of the video, that is, the end point of the video clip, by setting the time 00:00:00:00 or directly dragging the playback pointer.
This article is based on experience
After setting the entry and exit points of the video footage, click the "Insert" button to insert the clip video file into the timeline window.
In the [Source] monitor, you can set the time 00:00:00:00 or directly drag the playback pointer to set the video point out time, that is, the end point of the video clip.