Which video analysis software?

[rosooki]

Which video analysis software is most recommended? Do the leading packages allow for calculating the speed of the ball at various points?

I'd love to hear about the specific products people are using now and what makes them good, bad, or worth owning.

Thanks for any help.

[llll]

http://tt.tennis-warehouse.com/showthread.php?t=253232 here are some leads

[rosooki]

Which video analysis software?

Thanks, but I've already done my own research. I want to hear from people who are actually using the packages. Seeing Frausto's testimonial blurb on the MotionPro! website made me realize people in this community are probably the best ones to tell me what is real and what is not.

[johnyandell]

Personally I use only multiple Quick Time flies. You can look at multiples files of the player and pro at once. I don't regularly use a motion package although I have both MotionView and Dartfish. Both can do a range of amazing things. But I don't buy the sync point argument, because at 30 frames/sec that's not possible. Also don't you absolutely have to have the same view to see anything. Yeah the same view is nice but this is all qualitative--it's what feel you get from looking at the images.

[uspta990770809]

Personally I use only multiple Quick Time flies. You can look at multiples files of the player and pro at once. I don't regularly use a motion package although I have both MotionView and Dartfish. Both can do a range of amazing things. But I don't buy the sync point argument, because at 30 frames/sec that's not possible. Also don't you absolutely have to have the same view to see anything. Yeah the same view is nice but this is all qualitative--it's what feel you get from looking at the images.

If you edit your quick time file you can get full synchronization. Just select the frames for one stroke you want to view. You don't even have to cut them out of the file. Then make sure that the comparison file is the same number of frames. Set both players on loop and play selected frames (in quick time pro). Then hit play all movies and they will sync up. If you move each of your two movies to the contact point before you start the play all movies command, you will completely sync up your two films. In A/V controls under Window heading, you can select 1/2 speed playback.

On top of this, you can use the 420 frame/second camera (Casio EF 20) to really sync it up. Or if you want to sync up with John's 300 FPS shots of the pros, you can use the Casio F1 that Brian Gordon mentioned in an earlier post a couple of months ago. The AVI files from the EF 20 can be viewed in Quicktime Player. Or in the above mentioned V1Sports, which gives you better control to go back and forth and lay graphics over the clips. But you need a Windows operating system.

Have fun!
don brosseau

[johnyandell]

We're talking about 30 frames. You can't synch the contact with that--you only have it statistically 1 out of 8 or 9 examples. Unless you film many examples of each player and compare two where you have the ball in the string bed. Our footage on the DVDs is 125 frames by the way. So that doesn't sync exactly with the casio either.

But I think the sync approach can lead to literalism since no two tennis shots are exactly the same anyway. Even if you sync the contacts that doesn't mean that everything else does or should happen at the same time.

[uspta990770809]

Still a lot of fun

We're talking about 30 frames. You can't synch the contact with that--you only have it statistically 1 out of 8 or 9 examples. Unless you film many examples of each player and compare two where you have the ball in the string bed. Our footage on the DVDs is 125 frames by the way. So that doesn't sync exactly with the casio either.

But I think the sync approach can lead to literalism since no two tennis shots are exactly the same anyway. Even if you sync the contacts that doesn't mean that everything else does or should happen at the same time.

Certainly, every stroke is different, but it is kind of interesting and fun to see the strokes running side by side.

Just for fun, I checked... and you can set 2 different movies in QuickTime Pro to play back at different speeds. So a 125 fps at regular and a 210fps at 2x or just slightly less would play back at almost exactly the same rate and would be really cool to look at.

Depending on your processor speed and ram and video ram, you can play back more than 2 movies at a time.

Certainly makes for pretty neat display if nothing else...and I think it's more than that.

And to think it's all in QuickTime Pro! I don't know if the Windows version has the same capability. This is on a MAC.
don

[johnyandell]

yep you can do it. windows as well and sure I agree with this. what I look for is the frame with the key position.