Hi @garberfc ,
The chunked upload library does the upload flow for you; https://github.com/kaltura/chunked-file-upload-jquery .
It will get the file from the user browse dialog, then chunk the file and upload it in chunks until the file completes upload to Kaltura. Then your app will need to call the Kaltura media.addContent API to connect the uploaded file to your desired KalturaMediaEntry object.
You can see a reference implementation here; https://github.com/kaltura/chunked-file-upload-jquery/blob/master/index.php