Nexus 6 and Chromecast support: What is the trade off between using Chromecast and direct HDMI connection?
- Like the HTC and LG phone, the Nexus 6 phone is missing a hardware component. In this case Nexus 6 and most recent Moto phones doesn’t have any USB display-out capability build into the USB connector.
- When using N6 & Chromecast to do display-out to TV/Monitor, it will introduce a slight variable latency (25ms to 100ms+). This latency can be almost unnoticeable to the user, when users are working on office documents, coding, or watching videos. The latency varies depending on how much is changing on the TV/Monitor display at any given time.
- When users are working on Word or Excel documents or coding, the screen display is mostly static/unchanging. At this point the latency is at the lowest (~25ms) because there is a very low amount of data being sent between the N6 and Chromecast.
- Watching videos tends to introduce a bit higher latency (~60ms or higher), but since both video and audio are staying in sync, and because the user is not actively using keyboard or mouse. Latency won’t impact the user experience.
- Gaming is an area where latency can become an issue. For any games that require twitch reaction: FPS, Platform games…, latency can reduce the user experience. However, for games that are not driven by twitch reactions: RPG, 4x strategy, turn based games…, latency shouldn’t be a problem.
- For some reference on latency: Game controller manufactures usually target sub 15ms latency for their controllers.
- According to John Carmack, one of the chief developers of Oculus Rift, latency around 20ms and lower are not noticeable by most people.
- We are currently also testing GS5, OPO and Moto X 2nd gen. Chromecast support and the results are pretty encouraging
- Unfortunately, testing with GS4 and Note2 Chromecast is less than encouraging as both latency and image quality is a problem.
Update (12/20/2014): We have finished preliminary testing of GS5, N5, and OPO, and the latency and image quality was similar to the Nexus6 and Note4, so we are officially supporting Andromium OS on those devices. We are also further adding HTC One M8, and LG G3 to our support list, because they are very similar to the 3 phone tested above (One M8 same internal as GS5 & G3 same internal as OPO).
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