That toss out to the right is really only optimal for a slice serve. Seems that someone in charge over there is quite the conservationist. The high level serve moves edge on to face on.Ĭlick to expand.You playing at CSC quite often? Even tho' I've not played over there in quite a few years, I go over there every once in a while to exchange my used tennis ball for some new ones. (He moves to stretch, how is your movement?)ģ) Notice how your racket head moves forward with face up to face on. This is where ESR stretches the ISR muscles. (So what if your arm is straight?)Ģ) Compare your ESR and the high level server's. Look at the shadow areas at the elbow to see this. I believe that YT may also now store video files for 60 fps playback.Ĭompare the videos frame-by-frame and look at the differences in all detail:ġ) Start by only watching the high level rapid ISR rotation, the explosive ISR rotation. I believe that YT in the US would process 25 fps playback videos to play at 30 fps, but I don't know. Youtube may also accept videos that play at for example, at 25 fps, as most videos recorded by cameras in Europe would be, and convert them to 30 fps. Compression involves reducing the size of images. When the 30 fps video file from the camera is sent to Youtube it is farther compressed to reduce the storage required on YT. The raw video is also processed in the camera into a video file that plays back at 30 fps regardless of recording speed. The video is recorded at high frame rates and immediately compressed in the camera to reduce the size of its output video file. Most high speed cameras have a selectable recording rate, such as 30, 60, 120, 240 fps, etc. But any video file can be modified later by post processing, on your computer with video processing applications, on Youtube or Vimeo computers, etc. Playback speed is initially produced the camera and used to create the camera's output video file, usually 30 fps but may also be selectable. Recording speed frame rate is set in the camera. To think about these issues always keep clear in your mind recording speed and playback speed. I don't have an iPhone or iPad camera and can't speak for those. (It has not been eliminated yet - that the two serves look similar in timing because your serve speed has been doubled! ?)
I need to understand the Kinovea frame rate function. Things make sense if your video was at 240 fps but not 120 fps, at least as I understand the Kinovea "frame rate" entry. Never the less, your video seemed to coordinate very well. I enter 240 and the coordination is very nice, no problemīut if one video is 120 fps and the other is 240 fps, as for your comparison, I'm running into a new problem - Kinovea only allows one frame rate to be entered as far as I know now. If I have two 240 fps videos to compare, it has a screen to enter one frame rate. Click to expand.I am just starting to use Kinovea for comparisons.
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