16 Topic by petecrowe

(2 replies, posted in General)

Hello all, and sorry to ask for what may be a dumb kind of question.

I've setup a video analysis room with high intensity lighting (pair of hykolity 19,500 lm lights), 2 high speed cameras (GoPro 10's) and can capture even 240 fps with brilliant color and sharp-as-tack focus.

Now, to be able to accurately judge scale, I want to add a scale poster to be even with the subject so I can use the scale tools in Kinovea. What on earth is the name of that scale "poster" (or is it just called a "scale poster"?) used in professional settings and where can I get one? I know I could just laser print a couple pre-measured, thick black lines on laser paper, but I want this to look professional, and be sturdy and durable.

I suppose a video calibration chessboard like poster would also be helpful. I can easily make one using Illustrator, but again I'd prefer one mounted on heavy cardstock as well.

I appreciate anyone who can point me in the right direction.

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17 Topic by petecrowe

(0 replies, posted in Ideas and feature requests)

If it wouldn't be too hard, I would like to be able to have an object fade only from a specific frame forwards. Right now, any increasing of the custom fading options happens bi-directionally.

So imagine an object appearing suddenly at the 100th frame, I should be able to start the fade settings from that moment onwards so it would only fade out. Or even better, allow the user to adjust the fading for each direction separately.

I'm trying to track a baseball as it enters the frame, moves to the bat, and then as it is redirected on contact and moves away from the bat. Only a fade-out is needed in this case.

Thanks!

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18 Reply by petecrowe

(4 replies, posted in Cameras and hardware)

I don't believe that will work as the webcam software streams from the phone and not the desktop. Windows 10 only recognizes a USB connected GoPro 10 as a storage device (to access movies). I'm assuming it does the same on the 9 and 8. What are you trying to capture?

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19 Reply by petecrowe

(1 replies, posted in Bug reports)

I know this is an oldish thread, but there is no way anyone can advise until you provide more information about the host machine you have this running on. Is it a desktop or laptop? USB 2.0 ports or USB 3.0? If you have a desktop, are you using the native USB ports or have you added a PCI-e card with USB ports? Could you post up some video to see? Is there any blur?

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20 Topic by petecrowe

(0 replies, posted in Ideas and feature requests)

May I suggest that somewhere on this forum, there be a topic whose only purpose is for people to post up their entire WORKING  setups, along with end result video? This would be a typical entry in this topic (I've borrowed a users YouTube video link). This would be infinitely helpful for newbies like myself.

Aside from this idea, as one can see below, if this idea is put into action, hopefully Joan can increase the amount of links posts may contain as it is now set to only 1.

Kinovea version - 9.3 Beta
OS version - Windows 10 Home
PC - Dell XPS 15 Laptop
Intel Core I7-11195G7
Intel Iris Xe Graphics
16 GB LPDDR4x RAM
250 GB SSD
Camera(s): ELP 2MP OV4689 CMOS 260FPS 640*480 High Speed USB Camera with Varifocal Manual Zoom 5-50mm Lens
Alibaba link
Lighting used: Aputure Amaran HR672S Daylight LED Spot Light (B&H Photo Video)
YouTube link: Unfortunately, this forum setting only allows one URL link per post.
Etc.

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21 Reply by petecrowe

(3 replies, posted in Cameras and hardware)

An excellent and informative answer preludesam!

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22 Reply by petecrowe

(7 replies, posted in Ideas and feature requests)

Thanks Joan and sorry for not being clear. I think you've got it right. Yes, the keyframe markers would be editable (in relation to the time coordinate) and would move the marker to the new time typed in. I don't see the need to having the time be editable as just text, though others may have that need. I would just need to be able to type in a title for the marker (Stance, Contact, Follow-thru etc.) with another editable field being the time coordinates. While I'm on this topic, when I edit text with the pop-up, there is no "Apply" or "Ok" button which I can tab around to with my hands on the keyboard. I have to remove one hand to mouse over to the X to close the window. Adding some sort of button would make it easier.

Your initial ideas are perfect for how to handle making the keyframe time coordinate. Dragging and dropping would also be very, very handy, though with a mouse, it may be tricky putting that splice into the exact spot, but I like the drag and drop idea. I'd also suggest, a key combination such as Cmd (Ctrl) + clicking on the green keyframe timeline marker would open up that editing window.

Thanks for listening.

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23 Topic by petecrowe

(7 replies, posted in Ideas and feature requests)

I am using Kinovea to analyze the hitting motion of softball players. In every hit, there are 11 different points that can be enumerated, starting from Stance, and ending in Finish.

Rather than go through the laborious process of manually setting every keyframe, and naming it, I had the idea of saving an annotations file with all the keyframes already set in, but at set time positions. Obviously, every hitter will have a different timing. This didn't work as the numbers displayed on the keyframes are just text and have no connection to the actual video placement.

If this isn't in kinovea already, I'll add it to the features request forum. It would seem to me this would assist analysis in a host of different sports (especially those where someone is swinging or throwing something such as a javelin or swinging a golf club).

I'm imagining clicking on a keyframe, being able to type in the exact time of occurrence for that keyframe (i.e., "Contact" for when the bat connects with the ball), and the marker would jump to that point.

Thanks in advance

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24 Reply by petecrowe

(3 replies, posted in Ideas and feature requests)

This can be done with any number of screen recording apps, as well as the built-in capabilities of Windows. I run Windows in a Parallels instance on my Mac and use the Parallels screen recording app, which works fine. Why not let the development team work on features that extend the capabilities of Kinovea instead of creating something already available?

I'd recommend ChalkTalk's Telestrator - an app that allows markup and screen recording.

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