Hi @benny_1,
I recommend you use https://github.com/kaltura/kaltura-parallel-upload-resumablejs instead.
The code in this repo allows uploading several chunks in parallel, thus making the process faster. It also supports dragging and dropping a media file.
You can test it using the live demo here:
https://www.kaltura.org/demos/parallel-chunked-upload/index.html
or, if your endpoint is not available over HTTPs:
http://www.kaltura.org/demos/parallel-chunked-upload/index.html