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Topics - NoDak

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Software Dev / Improving the Jog Wheel, ideas.
« on: October 11, 2017, 09:33:20 PM »
Like an excited child reading over the specs of the latest gaming console, I poured over the manual for the Chronos well before I got mine. I went over the section on how the job wheel worked and it sounded perfectly reasonable to me.

"Moves playback 1 frame per detent (rotational click). Press and hold dial clicked in to move fast (40 frames per detent) "

I actually get it and do a recording session in my driveway with me chucking glass jars against pavement. (I looked like a crazy person to anyone watching me.) The jog wheel is quickly abandoned in favor of the on-screen slider.

As someone who has worked with designing products at my work I COMPLETELY understand what happened. An idea that sounded perfectly reasonable in the design phase turns out to not work well in practice. Nothing wrong with that, we're all human.

The problem is NOT the jog wheel itself. I like it's placement and feel. The problem is how it is setup in software.

1. One frame per click is too-fine. Most people only care about getting close enough to the section of the frame buffer they need to save. You want to have handles on your video anyway, so you will save a little bit before the area of interest and a little bit afterwards, 5-10 seconds is what most people I have seen recommend. If people need to go over video frame by frame they will typically do this later when on a PC with a large monitor.

2. Holding the jog wheel down while turning is impractical. If this was a jog wheel on a desk or control panel there would be no problem, but this is a camera on a tripod or handheld.

Since the problem is in software, we just have to come up with a new convention with choices for the user.

HOWEVER, we need to be VERY careful about giving the user choice. Choice CAN be good, but only up to a point.

Let me use an example that the designers of the Chronos did VERY well. On the "Record Settings" page, we can set the exact resolution down to the pixel, adjust the offset, set the specific frame rate, and exposure. OR, we can just select the drop down and pick from a list of presets that cover 95% of use cases. VERY good design. You make it easy for the 95% who actively do not want to have to bother with fine tuning their camera while allowing the people who want to tweak every last setting to get things exactly how they want it.

So, we need to do the same here. Have a relatively few pre-made options for the jog wheel that 95% of users will be fine with while allowing the people who just HAVE to customize everything to do their thing.

First, the menu to adjust the jog wheel would be in the "Util" page . There is plenty of space there to put a button titled "Jog Wheel".

I personally think push and hold needs to be abandoned, instead pushing and releasing the jog wheel cycles through the jog rates.

Presets would be in a drop down menu like the frame rates on the "Record Settings" page. I spent quite a bit of time on a long drive home from a job site mentally thinking through these. Most people just want to get the mark in and mark out close enough to the interesting bits, save, and move on to the next shot. They want a hatchet, not a scalpel. They will edit the video down to the specific frame when they have the video on their computer.

I see the attraction of jog rates based on frames, but if you are swapping between frame rates on a shoot, like I will, jog rates based on frames for one frame rate will be too big or too small on another frame rate. Meaning you will want to switch jog rates when you switch frame rates. Too much work, not user friendly. Instead, jog rates perhaps should by default be defined by fractions of the frame buffer per rotational click. Pressing the jog wheel would advance the jog rate to the next fastest rate. If already at the fastest rate it would cycle back to the slowest rate. Going with fractions of the frame buffer means jogging will be consistent between frame rates.

I have some ideas for presets

1/8 Frame Buffer, 1/32 Frame Buffer
1/16 Frame Buffer, 1/64 Frame Buffer
1/16 Frame Buffer, 1/128 Frame Buffer
1/32 Frame Buffer, 1/256 Frame Buffer
1/8 Frame Buffer, 1/32 Frame Buffer, 1/128 Frame Buffer
1/8 Frame Buffer, 1/64 Frame Buffer, 1/512 Frame Buffer
1/16 Frame Buffer, 1/128 Frame Buffer, 1/512 Frame Buffer
1/32 Frame Buffer, 1/256 Frame Buffer, 1/2048 Frame Buffer

These presets will allow the user to quickly locate the "Mark In" that they want and add a handle by simply going back a click or two. Then they cycle back to the "coarse" setting, locate the "Mark Out" location, and add a handle. Then they save and move on to the next shot.

Advanced settings menu would open an additional window for the people who want to adjust EVERYTHING. I think up to 5 jog rates would be enough. If they want to jog based on a specific number of frames they can do that or go by fraction of the frame buffer. There would be drop downs on each jog rate that would define the rate by frame or fraction of the frame buffer. Then enter a numerical value. Each jog rate would have a "NA" option, so if someone wants only 2-4 jog rates they can easily set that. Perhaps have an option to name the jog rates and save them.

This setup lets the users who just want to shoot high speed video have a selection of useful presets to use without being overwhelming. These presets will probably be good for 95% of users. For that 5%, they just go into the advanced menu and make their own jog rates.

Please let me know your feedback on this. Hopefully we can go back and forth and discuss various ideas. Perhaps someone has an even better idea.

Chronos User Discussion / 12 Volt power adapter.
« on: September 24, 2017, 08:00:26 PM »
Well my order has moved to the "Processing" phase and I am now thinking more and more about accessories I will need.

One thing that I foresee is needing an external battery. I plan on not relying on the internal battery except to just keep the camera powered on when moving things about.

I know that some people have used an inverter plugged into their car and ran an extension cord to the camera. While that works in many situations, there are going to be plenty of times this is not practical.

The obvious solution, since the Chronos uses a standard 5.5/2.5mm power plug, is to find and buy an appropriate laptop car power supply. Then you can use whatever 12 volt battery you have available by connecting a car plug to the battery. (In my case, a Power Wheels 12v battery I got NIB at a garage sale for $5.)

Of course, the problem is that most laptop car chargers only give make and model of laptop. They don't explicitly state power plug size. I did some research and I think I have found something at a good price.

I have searched the models listed and everything I find says this a 5.5/2.5mm plug. The right-angle tip was something I specifically wanted, as I think most people will want, to reduce strain on the connector. 65 watts, plenty of power.

Then to attach it to whatever 12v battery you have, you just use one of these alligator clip thingies. (Don't want to assume that everyone has or has used one, so figure I better link to a good one.)

I'll toss one of these into my Amazon cart for the next order I make from them. I will report in once I have my camera so people can be absolutely sure that this works.

Please let me know if anyone sees any problems. I figure I can't be the only person interested in something like this.

Good day,

It's a little sparse here, so I figure I'dd add some more content to this section of the forums.

I have been interested in high speed video for a long time. When buying my first camera of my own, that wasn't from the clearance section at Wal-Mart, I bought the Casio EX-ZR100 specifically because of its high speed video function. I put together some videos and put them on YouTube, but always felt that the Casio, while a good camera for the price, just wasn't good enough to do what I wanted to do.

A friend told me about the Chronos a year or so ago, don't remember exactly when. They were in on the Kickstarter, but I didn't have the money at that time to toss at something like that, though I found it quite interesting.

Fast forward to a couple weeks ago, he showed some friends and I that he had gotten with his Chronos.. I checked the site here and pulled the trigger on ordering one.

What do I plan to do with mine?

I'll be doing high-speed video of gun stuff of my own, both shooting and things being shot. There are some questions that I have about some of the PD .410 shotshell loads, among other things.

I have a couple gunsmith friends who I will do high-speed stuff for, troubleshooting guns, in exchange for the stuff they do for me.

I'll go to the RC plane/helo club and whatever other event is going on where high-speed video of someones stuff might be wanted. (The RC helo pilots will be ALL OVER this.) This will be good practice for me. Don't plan on charging people, but I'll take donations and reserve the right to put the video on YouTube.

There is a big university in town. Once I get some experience and word gets around a bit, I could help with or rent out the camera to them. I will obviously need to have some sort of contract demanding full replacement costs if the camera gets damaged. Has anyone written something up like that for their own use of the camera?

I'm not planning on making super amounts of money. Just looking to get some experience with the camera, a variety of footage, and help offset some of the cost of the camera.

So, here are some of the videos I have done with my Casio. Mini 14 High Speed Ruger GSR Rapid Fire and High Speed Ruger PC-40 High Speed Video M-11 submachine gun with LAGE MAX-31 9mm Suomi upper. Function test. HD and High-Speed Swiss Schmidt Rubin Model M1911 HD and 240 fps Slide Fire AR-15 Stock - 240fps Pallet Bonfire Side View - 240 fps Pallet Bonfire - 240 fps

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