Hello friends, Here’s some steps that should be helpful for any Dtube beginners: a path that you should follow to solve the Dtube Unknown Upload Error.
1) Your videos need to be in a format that is playable in web browsers (HTML 5 Video). So the files extensions would be .mp4 and .webm.
2) Change your browser, The browser you're using right now may not be the best one i suggest you to use the Opera browser https://www.opera.com/download.
3) Before loading your videos up use a program called handbrake to compresses the video https://handbrake.fr.
4) Dont submit your video till its run the upload, You have to select a thumbnail for the video, or take a snap shot, will automatically take a thumbnail for the video and load it.
5) Complete the information of the video, Title of the video, description of the video, and the tags, and finally click the submit button
I hope this steps will solve the Dtube Unknown Upload Error, bye friends see you next time.