Something I noticed was it only worked when I plugged the HDMI cable into the MHL port of my projector. If I didn't do that, I would just get sound and not video. I wonder if MHL has anything to do with this.
My projector: Optoma HD27
My extractor: J-Tech Digital Premium Quality 1080P HDMI To HDMI + Audio (SPDIF + RCA Stereo) Audio Extractor Converter (Support Apple TV 4 Gen)
If you go to that item on amazon and choose the picture with the ports, you can see exactly what ports I used.
- Firestick TV into [HDMI IN] of the extractor
- [HDMI OUT] goes from extractor to [HDMI/MHL IN] of the projector
- [spdif] goes from extractor into Sonos' provided dongle with Beam that converts optical to HDMI and then that goes into the [HDMI IN] of the Beam
I also have the audio switch set to 5.1
I only have a Beam with no other speakers and I'm unsure of if I get Dolby Digital or how to test this.