I forgot:
video downloadhelper yields the following link to the stream:
Code:
http://mobilehls-vh.akamaihd.net/z/prodVideo/entertainment/504/87/Stratford_KingLear_CBC_H264_20150904_,640x360_90,960x540_250,852x480_180,640x360_120,370x208_50,320x180_35,0kbps.mp4.csmil/4_a870b9d0fef60587_Seg1-Frag1?hdntl=exp=1442150028~acl=%2fz%2f*~data=hdntl~hmac=ad5c4aee3c1ddb9f79708f7af6ac3585cd2a3f9cb08a6a00f99e304889f92068&als=0,3,NaN,2,0,NaN,0,0,0,35,f,0,6980.15,f,s,KCMIVLLDOYVU,3.5.0,35&hdcore=3.5.0
EDIT: although that's probably for the SD stream, which is not the desired one.