Netflix: Netflix provides specific estimates for each of its streaming settings. Standard definition uses up to 0.3 GB per hour. High definition (720p) uses up to 1 GB per hour. Full HD (1080p) uses up to 3 GB per hour. UHD (4K) uses up to 7 GB per hour.
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Streaming a movie in Full HD requires about the same amount of bandwidth as downloading a movie in Full HD. However, downloading a movie stores a file on your device, so you can watch the file multiple times. If you stream the same movie twice, you will have to use twice as much data.
That said, most streaming services feature settings that automatically adjust your stream quality (and the amount you download) depending on your bandwidth. Streaming a movie in 4K may use less data than downloading it because the platform adjusts the download at various times over the course of the stream.
This time around, the resolution has been bumped up to 720p from 480p and the brightness has been doubled from 100 to 200 ANSI lumens. Colour reproduction remains a weakness, with slightly unrealistic tones in places, but the picture is bright, steady and sharp, while autofocus ensures you never have to fiddle with a focus dial.
Most of our favourite battery-powered projectors have a resolution of 720p or lower, which casts the Acer C250i's 1080p in a very favourable light. Not only that but this unusually shaped projector is also capable of projecting a bright image of up to 300 lumens, making it more than a match for the best battery-powered machines we've tested.
The Acer C250i's party trick is its ability to stand flat on its side or on end and automatically rotate its display to match but it packs in more features than just that. Its built-in rechargeable battery lasts up to five hours, there's a full array of connectivity features, including HDMI and USB-C video inputs. You can play video back from USB flash drives and microSD cards, stream from your phone or laptop using screen mirroring, or play audio through the speaker via Bluetooth.
Bafflingly, although you have access to many of the major streaming platforms, including Disney+, Amazon Prime and Apple TV, there's no BBC iPlayer or Netflix app available as a native app. Thankfully, you can get around this by casting content directly to the projector via the projector's built-in Chromecast facility from your phone, laptop or tablet. 2ff7e9595c
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