1 Topic by Tam

  • Tam
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Thank you, Kinovea team, for providing such a wonderful software!
Could Kinovea please consider the following small improvements?

It would be very helpful to add a keyboard shortcut for the Comment function. If possible, allowing users to assign custom shortcuts to any function would be even better.

The 2× playback speed feels slightly slow. It would be great if the maximum speed could be increased a bit, for example to 3×.

Please kindly consider these suggestions.
Thank you very much.

2 Reply by joan

  • joan
  • joan
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I have changed the maximum playback speed to 10x. It's something I wanted to do for a while, but it could only be done after some changes in the way the player works that happened recently.

https://www.kinovea.org/screencaps/2026.1/2026.1-speed-slider.png

1x normal speed is still in the middle. I experimented with logarithmic scale but in the end I settled on a piecewise mapping with 0 to 100% on one side and 1x to 10x on the other side. When a capture frame rate is configured there is a more complex relationship so we get more pixels allocated to the slow motion side for fine tuning.

One thing I'm not sure about is whether this should show the resulting frame rate like in the snapshot? I'm not sure if it's relevant to the analysis or merely a technical detail. On the other hand the frame interval in milliseconds could also be an interesting data point, when studying frame by frame it's good to have a reminder of how much time passes between frames. Maybe have these two off by default but have an option to show them if wanted?

I wonder if some people would be interested in really high speed factors, like 100x or more, to study long term effects in a timelapse manner. I always remember this video about the swimming portion of a triathlon that was super sped up and you could see the slow drift of people due to the currents, something you would not realize at all while watching at normal speed.

For really high speed factor the resulting frame rate stops making sense. It would be more interesting to show the "spectator" frame interval, like if every frame covers 30 seconds of real time for example.