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Member Since 04 Jul 2009
Offline Last Active Sep 12 2015 06:09 PM

Topics I've Started

High frame rate revolution - GoPro 2.7K 60p & 720 240p firmware coming

16 January 2015 - 10:49 AM

The just announced (February release) GoPro firmware will add 2.7K 60p and 720 240p frame rates to the Hero 4 Black, delivering the most impressive and affordable high-frame-rate camera to the consumer market:

•3840x2160 30p 8MP capture & playback (too choppy for fast-moving subjects - running kids, sea lions, and sports in general even with lots of slow shutter induced motion blur, softening the frames)
•2704x1520 60p 4MP capture & playback (as smooth as human eyesight and sharper than 4K 30p for fast-moving subjects and panning since motion blur is not needed so the frames can remain sharp)
•1920x1080 120p 2MP capture & 60p playback (ultra smooth and sharp 1/2 speed slow motion)
•1280x720 240p capture & 60p playback (ultra smooth and sharp 1/4 speed slow motion)

GoPro sales has been increasing because the founder is a visionary who fully understands the importance of high frame rates to the fast-paced sports his users are engaging in.

GoPro users are definitely fueling the high-frame-rate revolution, and YouTube has responded to growing demands by adding 60p and 48p streaming.

The legendary filmmakers George Lucas (Disneyland Star Wars/Star Tours 60fps), Peter Jackson (Hobbits 48fps, Universal Studio King Kong 60fps), and James Cameron (Avatar 2 60fps) are all pushing the entertainment industry toward high-frame-rate contents while educating the public on the benefit of high-frame-rate capture and playback.

4K 30/24p vs. 2K 60/48p - James Cameron: "A 2K image at 48 frames per second looks as sharp as a 4K image at 24 frames per second ... with one fundamental difference: the 4K/24 image will judder miserably during a panning shot, and the 2K/48 won't." Why? 4K 30/25/24p require 1/60sec or slower shutter speeds to introduce motion blur to smooth out the panning shots and fast moving subjects which soften the image. 2K 48/50/60p will appear smooth without motion blur so the 2K frames can remain as sharp as possible even for panning shot and fast moving subjects.

Keep in mind that most filmmakers are forced to use the 80+ year old 24fps because many theaters around the world are still using 24fps film projectors. The good news is that these outdated equipments are fast being replaced by digital projectors capable of 120+fps so we'll definitely see the end of 24fps movies in the not so distance future. Furthermore, all movie studios will eventually follow Paramount lead and stop making film prints first in the US and then the rest of the world and that will accelerate the conversion to digital projectors.

After seeing Doug Trumbull's groundbreaking ShowScan presentation on the benefit of high frame rate, many in the entertainment industry have become converts. Personally, I have never shot any HD videos for family or work below 60fps - ever.

YouTube now supports 1080p60 and 720p60

22 November 2014 - 09:23 PM

Apparently YouTube started 60p support late October.  :dancing:  However, not all browsers are able to show the 1080p60 and 720p60 options yet. The browsers I have that can display 60p options are:

Chrome - OS 10.6.8 and newer
FireFox - no luck
Safari - Yosemite yes, Maverick no

PC - I only have Windows 8.1 at the moment:
Chrome - Windows 8.1 and highly likely Windows 7 also
FireFox - no luck under Windows 8.1
IE - Windows 8.1 and highly likely Windows 7 also


Still, the most reliable way to show 60p movies online is to embed the mp4 files on your own web pages - no issue with all major browsers except Mac version of FireFox.

YouTube may also support 48p, but I’ve not come across one example yet. Perhaps the next Hobbit trailer since the movie was shot in 48p. 2.7K 48p will do until 4K 60p and 48p become affordable.

Backscatter Flip 3.1 filters questions

30 October 2014 - 12:56 PM

I received Flip 3.1 filters and noticed the one marked SHALLOW and the one marked DIVE are pretty much identical unlike the Yellow and Orange filters shown on Backscatter website. The one marked DEEP is indeed noticeably darker and redder than the other two.


My questions to the Flip 3.1 owners are:

1. Are your SHALLOW and DIVE filters more like Backscatter product images and videos shown here (very different) or more like mine (practically identical)?

2. Does your Flip 3.1 filter frame fit the GoPro 3+ or GoPro 4 Standard Housing better than mine?


I just want to make sure the SHALLOW or the DIVE filter I received are not mislabeled.