Live Stream to Twitch rtmp

I am getting an error when I try to stream with a Twitch rtmp output url. I see twitch as a template, so I assume this is possible. I am getting the error:

"RTMP mediaID [1] RTMP connect to stream error, retry 1 \[rtmp://live-pdx.twitch.tv/app/...]"

Setup:

• Single Pipeline
• MP4 input from S3 input file
• rtmp push output to the above url (I can stream to that url using ffmpeg)

PS Same issue with Mixer rtmp url