Been sniffing videos for the past few months on the same source using mb which has worked flawlessly. In fact it still does but except for this site. If you head to, 'Capitulos' tab on the left, then to 'Series' on the bottom hover over, then click on 'Escobar', a set of videos will load without a single URL change. This only works with proxies such as Registration may be required on the site but suddenly it stopped working and have been using tonnes of programs mentioned here but they all don't work. Note that videos may work there using mb but with these specific videos, they all are located on a different server using the latest flash algorithms. rtmp seems to not work, both 2.3 or 2.4 on rtmpdumphelper so either cli or gui, same thing.