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2010-12-16 7:13 PM

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Subject: Open Source Video Analysis Software
Kinovea is some pretty cool open source video analysis software.  I just used it today to get some objective angle measurements and dial in my bike fit on the trainer.

I'm not posting to debate the merits of spending $$$ to go get a fit.  I just thought I'd share a pretty cool program if anyone has been thinking about checking the logistics of their position.  One can also use it to check out the positions of other riders as long as they have a video or an image.  It's basic and I'm sure paying money could get a lot more functionality but for free, it works well.

Anyone done something similar before?


2010-12-16 7:24 PM
in reply to: #3251681

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Subject: RE: Open Source Video Analysis Software
I use it. It's pretty good. It's not DartFish but it does the job for measuring angles
2010-12-16 9:58 PM
in reply to: #3251681

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Subject: RE: Open Source Video Analysis Software
that seems like it could be a useful tool

thanks for posting it
2010-12-17 7:49 AM
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Subject: RE: Open Source Video Analysis Software
marcag - 2010-12-16 7:24 PM I use it. It's pretty good. It's not DartFish but it does the job for measuring angles


Have you used Dartfish before? how would it compare to it?
2010-12-17 8:15 AM
in reply to: #3251681

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Subject: RE: Open Source Video Analysis Software
carlwithac - 2010-12-16 7:13 PM Kinovea is some pretty cool open source video analysis software.  I just used it today to get some objective angle measurements and dial in my bike fit on the trainer.

I'm not posting to debate the merits of spending $$$ to go get a fit.  I just thought I'd share a pretty cool program if anyone has been thinking about checking the logistics of their position.  One can also use it to check out the positions of other riders as long as they have a video or an image.  It's basic and I'm sure paying money could get a lot more functionality but for free, it works well.

Anyone done something similar before?


I use Dartfish for different analysis* including tweaking my athletes bike position and also photo-shop to estimate frontal projected area (FPA). Something like this and this (the latter is just an example I snagged from Google as I don't have my laptop with all my coaching stuff with me, but that's the idea)

If you can do some of that stuff with that free software, that's pretty cool. For those inclined to do so it might help you do tweaking in your position and even help you estimate other stuff. It might help you also use beyond just bike position!

* The gait analysis we do is more an attempt to identify potential imbalances that might lead to/or causing injury when the load is increased and sometimes minor technique tweaks but we don't focus on changing your 'form'. For swimming we do focus on mechanic changes and/or possible resistance training/stretching recommendations for imbalances. For biking we focus on bike position but also on addressing imbalances if injury/pain is present. The videos get reviewed by us and our network of professionals (PTs, Bike fitters, Chiro, etc.) For all my one-on-one athletes I do all this as part of their program, IOW no extra cost.
2010-12-17 10:11 AM
in reply to: #3251681

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Subject: RE: Open Source Video Analysis Software
Anyone know of an opensource equivalent for photos?


2010-12-17 10:12 AM
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Subject: RE: Open Source Video Analysis Software
JorgeM - 2010-12-17 7:49 AM
marcag - 2010-12-16 7:24 PM I use it. It's pretty good. It's not DartFish but it does the job for measuring angles


Have you used Dartfish before? how would it compare to it?


I have watched people use Dartfish but I wasn't driving the keyboard. So for example one really cool thing they did was fix three points (hip, knee, foot) and watch the angle vary through the peddle stroke. I could not do this with kinovea. I could freeze a frame, I could then draw the angles, but if I move frame by frame, the angle would not vary as you can in dartfish.

Also I could not get distances. So if I want to measure the distance between two points, I cannot. For example i saw a cool video on how much people bob up and down when running. With Dartfish you could draw two lines to show the highest and lowest point and then use the software to measure it. Cannot figure out how to do that with kinovea.

Maybe I just don't know how to use it properly.

But for playing a video, freezing frames, annottating that frame, measuring angles, drawing points and lines, it's great.

for that first pic. You could draw all the lines, do all the angles. I don't think you could have the s/w measure that .99m


Edited by marcag 2010-12-17 10:15 AM
2010-12-17 10:29 AM
in reply to: #3252248

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Subject: RE: Open Source Video Analysis Software
marcag - 2010-12-17 10:12 AM
JorgeM - 2010-12-17 7:49 AM
marcag - 2010-12-16 7:24 PM I use it. It's pretty good. It's not DartFish but it does the job for measuring angles


Have you used Dartfish before? how would it compare to it?


I have watched people use Dartfish but I wasn't driving the keyboard. So for example one really cool thing they did was fix three points (hip, knee, foot) and watch the angle vary through the peddle stroke. I could not do this with kinovea. I could freeze a frame, I could then draw the angles, but if I move frame by frame, the angle would not vary as you can in dartfish.

Also I could not get distances. So if I want to measure the distance between two points, I cannot. For example i saw a cool video on how much people bob up and down when running. With Dartfish you could draw two lines to show the highest and lowest point and then use the software to measure it. Cannot figure out how to do that with kinovea.

Maybe I just don't know how to use it properly.

But for playing a video, freezing frames, annottating that frame, measuring angles, drawing points and lines, it's great.

for that first pic. You could draw all the lines, do all the angles. I don't think you could have the s/w measure that .99m


Cool. Yes Dartfish has some cool things but it is pricey and I can only share so many licenses AFIK. I'll download kinovea and play with it to learn if it could be used for simple things by my associate coaches.

Edited by JorgeM 2010-12-17 10:30 AM
2010-12-17 11:03 AM
in reply to: #3252244

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Subject: RE: Open Source Video Analysis Software
GiMP

it is the bomb. (or it used to be back in the day, just been tinkering with it lately )
r.b.
2010-12-17 11:04 AM
in reply to: #3251681

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Subject: RE: Open Source Video Analysis Software
Thanks for posting this. I am just now coming into the market for this type of beast!

regards,
r.b.
2010-12-18 12:13 AM
in reply to: #3251681

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Coach
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Subject: RE: Open Source Video Analysis Software
Thanks for the link. I've been using various trials of $400+ programs (other options besides dartfish), and will give this a try as well.



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