In FonePaw Video Converter Ultimate, you can compress large videos to the proper size in two ways.
First, add the video by clicking the "+" button or drag them into the program directly.
Second, on the right side of the program, click on the Compress Video button.
Third, a prompt will pop out and you can adjust the compressed size by entering the exact number or dragging the progress bar. Click the Preview button to watch 10 seconds preview.
Finally, click Save > Convert All to save the video.
If you want to compress the videos more professionally, this method should be helpful.
First, enable the program and navigate to Toolbox.
Second, select Video Compressor from the five options and add a video into the software.
Third, in the pop-out window, you can rename the video, set the compressed size by entering the exact number, or by dragging the bar.
Even better, you can change the format and resolution of the video. Then click the Preview button to watch 10 seconds preview.
Finally, choose the save path and hit the Compress button to compress the video.