To upload a video to Twitter, you need to make sure the video size, format and related video parameters meet Twitter video requirements above, or the uploading would fail. Of course, you can also use WonderFox HD Video Converter Factory Pro to adjust video parameters, resize videos, and change video formats to leap over twitter video limits. This software is easy to use and powerful. It can not only convert videos to best Twitter video format and other specs, but also download Twitter videos, edit videos by cutting, cropping, merging, adding special effects, etc. The following tutorial shows you how to convert videos to the best Twitter video formats, twitter video length as well as video parameters for uploading.