In case you receive the following message: "The conversion of your video file has failed, etc." please check the file name under "Select video file" and make sure it is properly set. This file name needs to be a full path to the file, not just the name of the file. For example, if you downloaded a video and saved it as "myvideo.mp4" in your "C:Videos" folder, the "Select video file" box should have "C:Videos myvideo.mp4" in it not just "myvideo.mp4" (no directory name) or "C:Videos myvideo" (no file extension, e.g. ".mp4"). To get the entire file path in the "Select video file" box, click the "Browse" button and locate the video on your drive, select it and try the conversion again, making sure the entire file and path is present and correct.
In case you are still receiving the error message, you may be missing a codec or have conflicting codecs on your computer. This is likely if you are using older version of Windows or you have many video processing applications on your computer. You will need to identify what codec is missing or corrupt and fix it. There are several codec packs available at sites like download.com, eg: Windows Essentials Media Codec Pack however we do not recommend, we do not endorse and we are not responsible for a particular codec pack.
