Uploading a video on threespeak has some needed requirements

• The video should be of a small size, below 350 mb I think won't upload even after loading.
• I'll advise you use a compressor app like video panda to reduce the size.
• You can use threespeak site or app or ecency, all are quite easy to use and never takes hours to upload unless site has issues before or when you started to upload.

But it would be a more awesome experience if they make threespeak more faster as you've requested hehe.