Hi,
No, it is not currently possible.
It was necessary to improve the tracking performance and robustness before implementing multi-point tracking.
It is planned as a future improvement though.
1,621 2010-03-22 10:24:34
Re: Angle Question (6 replies, posted in General)
1,622 2010-03-19 18:37:50
Re: Best video values? (1 replies, posted in Bug reports)
Hi,
I hope someone can come and answer this better than me because I have not much experience with AVCHD, and I don't do a lot of conversions.
If you are not much concerned with storage size, you can use the highest quality option available in your conversion software.
Regarding blurriness/quality, bitrate is not as much relevant as the compression method used, because most of the time is spend decoding the image. This is especially true for large image size like full HD.
For a given codec and image size, you can use a higher bitrate. That should improve quality without degrading rendering speed. (You could use uncompressed files).
Regarding jerkiness, this will really depends on the machine performances and you'll have to make tests to find your threshold.
If you see the speed slider decreasing on its own, then the program can't keep the pace.
I would target for 25 or 30 fps, and then reduce size until it plays smoothly if you have jerkiness issues or automatic slow down.
Also, if possible try to use an intra-frame only codec (like DV or MJPEG) since that will make the backward navigation easier and decoding faster.
1,623 2010-03-18 14:06:45
Re: activation de la fonction miroir (1 replies, posted in Français)
Bonjour,
Pour que les menus soient activés, la video doit être en mode analyse: les images décompressées en mémoire.
Ce mode se déclenche tout seul quand la zone de travail est suffisamment courte, la valeur par défaut étant 12 secondes.
D'autres infos sont dispo dans l'aide aux chapitres Preferences et Explorer la technique.
Note: dans les nouvelles versions (0.8.0 et supérieures) la fonction miroir est disponible tout le temps.
1,624 2010-03-17 01:14:29
Re: Help rename the "Mosaic" function (8 replies, posted in General)
Thanks guys 
"Image sequence" is sort of taken by the image export tool when saving multiple images at regular intervals.
I really like "Overview" 
I wonder if it would be clear enough alone, considering it's under the Motion menu. (So it would read Motion > Overview)
Multiple View sounds good too, but somehow slighltly less characteristic of the function ? (I fear users might mix it up with the two screen mode for video comparison)
1,625 2010-03-16 20:43:33
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Hi,
Thanks for the follow-up on the drag and drop and for the bug report.
I reproduce it too. It'll be known as bug m177.
1,626 2010-03-15 11:11:37
Topic: Help rename the "Mosaic" function (8 replies, posted in General)
First, the result of the function to rename in case you are not familiar with it :
It takes the working zone and creates a composite image out of it.
I guess "Mosaic" is a suboptimal name for this function…
- It doesn't really speak for itself…
- In recent years, the term has come to mean something else entirely: an image created from thousands of smaller images, each one acting as a pixel in the final composite.
- It recently came to my attention that a proprietary sport analysis package was using the term "Mosaic" for one of its function somewhat similar in concept than Kinovea's Mosaic. The company behind the package has an history of patenting and trademarking things, so I think it would be best to use a different name.
Naming a function is pretty hard, please put your ideas in the hat, comment on suggestions, etc.
- Should convey the idea of multiple images and/or of video summarization.
- Should be short enough (one / two words).
- Chronophotography is reserved for a future function.
Existing suggestions:
- Video Summary or Image Summary or Summary
- Synopsis
- Kinorama
- Composite
Thanks for your help
1,627 2010-03-11 11:31:54
Re: Tagging options are a must in behavioural & technico-tactical analysis (1 replies, posted in General)
The discussion goes on over this thread: The tagging option... When ?
1,628 2010-03-11 11:30:47
Re: The Tagging option... When? (3 replies, posted in General)
Hi,
Just to clear some things up,
Tagging is what really makes competitors' software powerful.
This is not a competition. There's no "market share" to loose or win.
There is just several softwares that happen to cover overlapping fields. Nothing prevents you from using them all.
Sports researchers and professional coaches need to tag behavour and events in the time line.
Agreed.
It's a huge mistake to override tagging options.
They are not overlooked, it's just a matter of prioritization.
There is a massive ammount of work to be done (Camcorder capture, audio, improved drawing tools, better measurement tools, better comparison tools, publishing framework, motion summarization and extraction, etc.)
Notational analysis is one of them. Your message is a +1 vote for it in the prioritization queue. Others may have different needs / views.
dartfish s full of stupid features, which nobody uses, like stromotion
Now that's a statement. I, on the contrary, think that this type of motion summarization is an invaluable tool for motion analysis.
(By the way, there are people ready to afford the price tag just to get this feature.)
Even if u are not interested in tactical analysis nor in behavoural studies
I am. If I had to use it for a project right now, I'd use LongoMatch software as linked above.
And if I found it to be lacking in some departments, then I would go on their forum and suggest improvements, give feedback, etc. As I said, nothing prevents you from using several programs. Especially when some of them are provided at no cost. 
I certainly hope that one day there will be a fully fledged notational analysis module in Kinovea, but I also know it's not going to happen soon.
tagging visual-technical observations or events in the video clips is what really makes sense in the use of a video management system.
Well, I don't view Kinovea as a video management system, but more as a motion analysis tool. It makes a big difference.
Managing the whole user's video collection is a nice goal, but not ours. Kinovea might just be one piece in your toolchain.
You can complement it with some file level manager on one end, and maybe a CD burner on the other for exemple.
I also think that focusing on playback and analysis will make for a more lightweight and easy-to-use program in the end.
Thanks
1,629 2010-03-07 20:24:12
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Well, I had the same experience when it happened to me, it solved itself up. 
1,630 2010-03-07 20:01:42
Topic: Anyone actually using the "Edges only" function ? (6 replies, posted in General)
The access to this menu is under evaluation… Image > Edges Only…
(you must be under analysis mode, i.e. frames extracted to memory, to be able to try it).
I have a feeling that nobody is actually using it, is it justified ?
Removing it would slightly simplify the Image menu (anticipating on the addition of some other menus that'll come later on).
So if you ever used it or think it'll be useful at some point, have your say now ! Otherwise, we'll just say good bye to it.
(The initial idea of this function was to better see the motion taking place but it's not very convincing…)
1,631 2010-03-06 09:44:37
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Hmm, now that I think of it, I have experienced something similar during developpement.
Can you check the log (from Help > Open log folder and then open "log.txt").
Let me know if you see anything along the lines of "Export not possible, xslt file not found."
1,632 2010-03-05 15:59:34
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Alexander wrote:
Problem:
After using the tracking-tool with speed indication my spreadsheet export does not work for some reason. It does not save the data?
I couldn't reproduce the issue. Does it happen with all export formats ? (XHTML can be viewed in a web browser and Text in notepad)
1,633 2010-03-05 14:34:46
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Alexander wrote:
Does the speed given by the tracking-tool indicate speed in the direction from the earlier point (picture or startingpoint) or is it given along the X-axis?
"In the direction from the earlier point". It is basically the length of the last segment of the trajectory divided by the frame interval time.
Alexander wrote:
Would it be possible to have an optional speedmeasure with BOTH the x- and y-axis separately?
Well, if we can find a way to provide the option without cluttering the interface, yes.
Currently I would be more inclined to delegate this type of specific measurements to the external spreadsheet / plotter application. Maybe we'll need more options in the export dialog ?
But if it's a matter of adding an option to the combobox and then displaying a different label on the key images / current point, then it should keep the interface clear.
I'll try to see why the spreadsheet export would fail.
Alexander wrote:
My athlete is a young female longjumper. She won the Finnish championship last weekend jumping 599 in the under 17y agegroup
That's great I'm a former high jumper myself.
Alexander wrote:
And further: the possibility for angular speed to a defined axis (a new marker). If I mark the hip and start the tracking-tool on the knee, then I could get the angular speed of an athletes kneelift.
And at last: the possibility to change these to measures of acceleration/deceleration.-
I think this the core of the issue, there are so many thing we could measure and display !
There is also the possibility of multi point tracking to directly see an angle variation, or measuring the alignment of a tracked line with a reference line (for exemple tracking the leg alignement with a vertical reference frame during walking cycle seen from behind).
And then there are all the visualisation approaches. having a plot of the positions on X axis vs time or Y axis vs time, or speed over time, acceleration, etc.
We need to list / gather all ideas in the "measurements" area and come up with a coherent system.
For this we should probably follow the discussion in a specific thread, like here for exemple.
1,634 2010-03-05 09:47:24
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Hi,
Someone reported a crash at the application startup with 0.8.5, and we have a hard time finding the cause… I can't reproduce, is anyone else having the problem ?
1,635 2010-03-02 00:23:41
Re: Experimental version - 0.8.5 (12 replies, posted in General)
Rogerio wrote:
I´d like to know why the trajetory lasts only for a few frames. Can´t u make disapear after more frames?
The trajectory will auto-update its position as long as it can find the point tracked with sufficient "similarity".
If your trajectory stops after a few frames and disappears, I guess it's because it cannot find the point being tracked with enough confidence anymore
(You can go to the last frame of the trajectory and right click + Restart path edition).
Maybe the point is going too fast for the current search window size ? The search window is the semi transparent square around the target. It is the only area where the point will be looked for. (I know it's kinda small, but trying to find a tradeoff between performances and robustness)
Please run it frame by frame (move the video with the arrow key instead of play for example) and look at the number in the upper left corner of the search window. What is the last number before it start to disappear ?
(This number is the similarity measure by the way, it goes from 0.5 to 1.0)
Rogerio wrote:
And u could create a feature to show the axis(x, and y) in the screen.
This is in the workings. In fact, if you go to menu Image > Coordinate system origin, you'll see that you can already define the axis. Currently it is only used for trajectory export to spreadsheet files, but in a future version you should be able to display it directly over the video.
Rogerio wrote:
Antoher think is... I´d like to know if u have intentions on creating a stromotion feature on the program.
Well, it is in project but don't hold your breath. 