How to get videos from National Geographic

[chanc]

http://channel.nationalgeographic.co...Detect=t%252Cf

When I looked up in its source code of the page, I got a link like this:

http://channelhd-f.akamaihd.net/mpx/...ains_B_015.flv

I tried to download directly, and got a file playing exactly for 1 minute.
Apparently ,the site makes some limit to its videos.

Is there a effective way to get it downloaded ?

Thanks in advance.

[chap]

http://channelhd-i.akamaihd.net/i/mpx/video/Nat_Geo_Channels/12/314/11855156_Marijuana_Mountains_B_,180,66,22,15,0.mp4.csmil/index_0_av.m3u8?e=b471643725c47acd

[chanc]

Thank you so much Chap ! It works well.
Could you show me how to get this ?

[chanc]

Are m3u8 links only obtained by using an apple product ?