Add your own voice comment into video

How to crop a video, remove the watermark and make your own voice comment ?

1. Upload the video (Format : MP4, MKV, WebM)    and disable the audio
2. Click the visual effect button to select the Crop feature
3. Start to play the video  ►
4. Click on the left upper side of the video part you want to crop 
5. Click on the right downside of the video part you want to crop 
6. The video is cropped now open the microphone and add your own voice comment

Here is the video resized without watermark and with your own voice comment