Videography Notes Today: GoPro Hero 4, Mac Screen Capture

  1. GoPro Hero 4 camera release date, price and rumours
    • Rumoured Release Date: March 2015 OR October 2014
    • Physically Compact, lightweight and rugged.
    • Weighs less than 100 grams.
    • Has adapter to fit on to anything in motion, including bikes, ski poles, cars, surfboards, kite boards, long boards, BMXs, or helmets.
    • Runs on A9 ARM Core chip.
    • Records 4K videos at 30 frames per second.
    • Records 1080p at 120 frames per second.
    • Records 720p at 240 frames per second. (amazing slow motion!)
    • 13-megapixel photosensor.
    • New set of lenses for shooting in low light conditions.
    • Multi-exposure capability.
    • HDR WDR tone mapping capability. (HDR is High Dynamic Range and WDR is Wide Dynamic Range.  They describe the attribute of an imaging system that can record greater scene brightness details, from shadows to highlights than normal.)
    • Electronic image stabilisation capability.
    • Improved MCTF (Motion Compressed Temporal Filtering) which cleans up image noise with minimal motion blur or loss of sharpness.
    • Dual sensor interfaces 12-lane SLVDS/HiSPiTM/subLVDS (can someone explain this?)
    • Remote playback.
    • Built-in wi-fi.
    • H.264/BP/MP/HP level 5.1 and MJPEG encoding.
    • Underwater range of 60 meters in front of the camera.
    • Rumoured Price: US$340 (lower than GoPro Hero 3+)
  2. How to screen capture an active open window on a Mac.  
    • Press Command (⌘)-Shift-4
    • Press the Space bar
    • Move the camera cursor over the window to highlight it
    • Then click on the window
    • A PNG file of the shot will be saved on the Desktop.
Adrian Lee
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