Gpa-15 Loc: Tinton Falls, NJ

TOPIC: ‘‘Frame Grabbing’ of 4K (and up) videos’

PREFACE: I have had excellent success by Videoing an event like a Graduation (using my 8MP Apple IPod Touch); and then I would use the IOS App called ‘VideoPix’ to easily view each frame in the Video, which I had captured to my IPod’s ‘camera-roll’.
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I then would determine which ONE frame shows the ‘precise’ moment that ALL THREE of the following are happening SIMULTANEOUSLY:
1. The Diploma is in both the Presenter’s and the Graduate’s LEFT hands; ...and,
2. The Presenter and the Graduate are shaking their right hands; ...and,
3. Both Presenter and Graduate are simultaneously looking at the Videographer; ...and,
4. Both are Smiling.
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I would NOW like to upgrade to a Camera (...or Camcorder ...or
Smartphone) that Videos in 4K or 6K or 8K.
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That way I can offer my client a HIGH Resolution 11 x 14 (or Larger) Portrait.
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I know that a 4K Frame yields a 8MP STILL; ...can anyone tell me what size ‘Still’ is produced by a 6K and 8K video frame.?
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There is an excellent treatise on the subject, however it’s now effectively three years old (March 2015)
...viz.:
Re-1: ‘Frame/Screen-Grabbing’ using the Panasonic ‘GK-4’ DSLR in 4K video mode.
LINK:
<http://noamkroll.com/the-gh4s-4k-photo-mode-explained-why-it-might-be-a-huge-feature-for-filmmakers-in-the-future/ >
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(( BTW, be SURE to read the 53 Comments by fellow-pros, they were VERY Informative for me. ))
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Another ‘solution’ to capturing the ‘precise-moment’ MIGHT be to use a camera like the Sony ‘a9’, which operates at 20-fps.
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Gitchigumi Loc: Wake Forest, NC

"Frame grabbing" is not my cup of tea. However, my intuition says the Sony A9 would be the better choice. And, I base that on image-quality, frame rate and noise-less operation.

kymarto Loc: Portland OR and Milan Italy

https://www.quora.com/What-is-the-resolution-of-6K-7K-8K-images

There are no cheap 6K cameras available. Decent ones are going to run minimum $10K, AFAIK, and the lenses start around that price too. You are much better off buying a Sony A9 mirrorless that shoots 20fps and will do bursts.

rmorrison1116 Loc: Near Valley Forge, Pennsylvania

The Canon 5D IV does 4K at 30fps and frame capture is quite simple. You may do it in camera or with a computer. I've used this feature many times with great results. One advantage to using a DSLR over a smart phone device is lenses. Smart phone devices are limited to little tiny lenses, DSLR'S are not.

Tomcat5133 Loc: Gladwyne PA

My opinion is 4k would be sufficient. You will have some frames that have blur I believe. I pull frames from the Sony camera's.
The PXW-X70 small pro camcorder. And the a7s II, a6300 and RX10 III. The setting is their hybrid XAVC S 4K or XAVC S HD.
I tweak in photoshop. the idea of shooting burst if you had a lot of shots could create an editing nightmare of so many shots.
Maybe I am not completely understanding. 4K should work.

I thought about this a little more. is this process happening all at the same time. I have seen graduation and I seem to remember all 3 sometimes
happen at once. I think the what has been said about bursts is correct but might need 2 or 3 cameraman.

bsprague Loc: Lacey, WA, USA

My first "light bulb" moment came when I was shooting 1920x1080p AVCHD of a granddaughter playing softball. While editing the video I froze on the moment where the ball was inches from her bat. I "frame grabbed" it, printed it to 8x10 and it hung on the wall until she was a few years older.

Since then, I've taken foreign trips shooting 4K with a (very compact) Panasonic LX100. Frame grabs to 13x19 printed on a Canon Pro-100 printer are satisfying. I've added a 4K shooting Panasonic GX8 to my kit and do the same thing. All the current Panasonic cameras shoot 4K. The very new $2000 Panasonic GH5 has a "6K Photo Mode" but I don't know how that works.

With the adoption of 4K capabilities, Panasonic has put it in their firmware to do frame grabs from 4K in the camera. They promote it as "4K Photo Mode". You can watch a demo here: https://www.youtube.com/watch?v=9by3f6qNCyM

Lots of software will "grab" frames from video. Lightroom is very good at it. My primary video editor is Premiere Elements and it has tools to grab individual frames. The common media player "VLC" does it too. These software tools will "grab" frames from any video from any camera. The "grab" captured in Lightroom from a 4K clip is 8 megapixels.

The significant trick for shooting video where you may want to grab frames is to make sure the shutter speed is high enough. It is common for video shooters to try to blur the shoot so that digital video looks "filmic". They may even use ND filters to be sure of slow shutter speeds. If you accept that video should look like video, you can shoot at the same shutter speeds you use for stills and the frame grabs will have less motion blur.

Gpa-15 Loc: Tinton Falls, NJ

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Hi ‘kymmarto’... — — Thanks for both the Link and info/advice. — I didn’t realize that a 6K costs THAT kind of money

Gpa-15 Loc: Tinton Falls, NJ

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Hi ‘morrison1116’... — — WOW, now that is Great to know. — I see that a reconditioned Mark-IV will go for 2.8k to 3.5k. — Thanks.

Gpa-15 Loc: Tinton Falls, NJ

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Hi ‘Tom Daniels’... — — THIS is a wonderfully complete response. I especially appreciate your info on the Camcorder.

Gpa-15 Loc: Tinton Falls, NJ

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Hi ‘bsprague’... — — Thanks SO much for the Great Info. I’ll definitely make use of the Link and the info on the ‘6k Mode’ of the G-5. — Aditionally, it was reassuring to read that 13x19 prints were successfully printed. — Thanks Again.

burkphoto Loc: High Point, NC

The new (2017) Lumix GH5 is what you need. It produces 18MP stills in “6K” photo mode.

bsprague Loc: Lacey, WA, USA

Bill,

Correct me if I'm wrong, but isn't the 6K Photo Mode a sort of burst mode for JPEGs? I don't think you can shoot "6K Video" and extract stills ("frame grabs") from the footage in post. There is a clever in-camera system for extracting a frame but it is not really 6K video. New firmware has a 6K anamorphic mode. Truth is, I'm confused on a lot of what the GH5 does beyond 4K at 60p.

tdekany Loc: Oregon

Check out the recently released video from the Camera Store- their experiences after 6,months. GH5 is the camera they use now.

burkphoto Loc: High Point, NC

Right. The 6K photo mode is not video. It’s a burst mode of 30 FPS using the electronic shutter. It’s taller than 16:9, and not quite 6K.

I suppose you could use anamorphic lenses for full use of the 20 MP sensor... record video... extract 2:1 anamorphic images in post...

4K stills are 8.2 MP, 16:9 aspect ratio, 3840x2160 pixels. The GH5 can do 60/second. The GH4 does 30/second.

tdekany Loc: Oregon

Watch it! http://youtu.be/N6BcaykMp88