If you use Video Source File like MP4:
There’s no a such node to achieve this. But I use a trick to do so.
Use the Rewind and Pause node could stop the video, but the texture will not update. Which looks like the video is paused not stopped.
To achieve that idea, you need to update the material by hand, just pick your first frame of your video and update it to your video material. So that you can make your video plane stop at the first frame.
But If you use Img Media Source:
Just use Rewind with Pause node, you can achieve the result you want.