Method of Converting MP4 to WebM with EaseUS Video Converter: Step 1. Download EaseUS Video Converter. Open it and select "Video Converter" from the three options. Then, hit "Choose Files". You can import the file from the computer. Step 2. When you see the listed video in this tool, hit "Settings" > "WEBM".

Click on the Add Video to import your source AVI file. Step 3. Select the Convert all to menu from the bottom. In the video section, select MP4 format from the list in the left pane. Step 4. Tap on the Hardware Acceleration Detection and Lossless Conversion section and select a target folder in the interface. Step 5. .