You can read an article from The Next Web
From the Periscope blog post:
With Producer, you can stream high-quality live video from external sources, including streaming software, hardware encoders, and professional cameras, on Periscope and Twitter. Just like any other broadcast on Periscope, viewers can send comments and hearts, and watch live in the Periscope and Twitter apps as well as on the web at Periscope.tv.
Broadcasters interested in signing up can do so here
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