Special thanks for all of your replies. I will try it later.
I didn't use firefox. I use the Chrome brower.
How I get the F4M address? The step is：
For example I chose ‘Meet the Press’ of 6th, Mar., 2016
（1） Open the web page
http://www.nbc.com/meet-the-press/vi...121#vc210121=1
you can find the address from the source page of the above link
https://player.theplatform.com/p/Nnz...deSharing=true
（2） open the above link：
https://player.theplatform........, then look for the 'f4m' address in the 'network' tab, as shown in the following figure.
the f4m address is:
http://nbcmpx-vh.akamaihd.net/z/vide...hd core=3.5.0
Conclusion:
I don't find a suitable plugin for HDS address detection in Chrome. BUT may be this method can be used for a rough search.
Any suggestion?