First, download the file. To convert your video to MP4 format, select or drag the original WMV video from your computer, iPhone or Android. Moreover, you can choose it from your Google Drive or Dropbox account. Now Convert the file with https://convertr.org/mkv-to-mp4. Your video is uploaded, and you can start converting WMV to MP4. If needed, change the output format to any of the supported video formats. After that, you can add more videos for batch conversion. Then customize your video. If you want, you can adjust settings like resolution, quality, aspect ratio, and more by clicking the gear icon in the file line. Now all that's left is to download it.