Are you looking to become an expert in video analysis? Whether you're a coach, athlete, or researcher, understanding how to perform a video analysis can help you gain valuable insights into your performance. With the right tools and techniques, you can quickly capture slow-motion videos, upload them to a computer or application, and start the analysis. In this article, we'll discuss the basics of video analysis and how to use it for kinematic and sports analysis. To begin with, iPhones and iPads are great for capturing slow-motion videos at 120 or 240 frames per second (fps).
You can then upload them to a computer or application and begin your analysis. Additionally, you can record a video and transmit it to a television via AirPlay for immediate feedback and on-site analysis with athletes. iPhones currently offer 1080p video quality when shooting in slow motion, which is great for close-up shots. However, kinematic and sports analysis usually involves shooting from a distance and zooming in to avoid parallax problems when measuring angles and distances. Image quality deteriorates rapidly when you enlarge 1080p images.
For this reason, many experts recommend using a GoPro HERO10 camera for kinematic and sports analysis. This camera is compact, durable, and records slow-motion videos at 120 fps in 4K quality. This gives it impressive image clarity and allows for accurate slow-motion kinematic analysis. Parallax is a normal phenomenon that occurs when taking photographs and videos. It refers to images that are distorted by cameras that transform a 3D world into a 2D image, which can cause errors in calculations such as angles and distances.
To avoid this issue, two cameras are often used for analyzing sprints. These cameras can capture close-up shots of the first step as well as the first 7 to 10 steps at a time. Additionally, cameras can be placed to capture the first 7 to 10 steps as well as maximum speed divisions (e.g., 30 to 40 m along the track). This allows you to capture acceleration and maximum speed in one test, saving time. Excel is also useful for creating templates and connecting them with formulas.
If you have a basic understanding of formulas, you can program Excel to automatically calculate values for you. You can also search for custom formatting options on Google that will allow Excel to automatically add desired text when you type in a cell (e.g., typing 4.67 will automatically become “4.67 steps per second”). Excel also offers many charts such as bar charts, scatter charts, and line charts. If you want to export all the video segments encoded in one or more codes, use the corresponding function in the upper right corner of the Media Browser. These clips are stored as separate video files and can be inserted as new video files in the MAXQDA browser.
MAXQDA supports all popular video file formats such as MP4, MOV, MPG, M4V, 3GP, 3GGP, or WMV on Windows. Video reviews are common in team sports as almost all high-level teams review games and practice films. However, performance analysis is less common. When considering video analysis software, workflow is an important priority since a poor process can easily double or triple the time required to complete an analysis software. Additionally, capacity and cost should be taken into consideration.Video transcription is especially useful for researchers who use data collection methods such as interviews and observation.
The Document Portrait feature helps you view all the video segments assigned to specific codes according to their order in the video. During the analysis process, it may be necessary to check the content of the video segments encoded for a specific code. All video segments encoded with “interacting” are automatically displayed in the “Recovered Segments” window. They are also automatically linked to the original material which makes it easier to re-see the context of the encoded video segment. To import these clips into MAXQDA all you have to do is mark the video segment you want to import and select “Export video clip” in the context menu. Video analysis is an invaluable tool for coaches, athletes, researchers, and anyone else looking to gain insights into their performance or research data collection methods such as interviews or observation.
With the right tools and techniques, you can quickly capture slow-motion videos at 120 or 240 fps with iPhones or iPads or 4K quality with GoPro HERO10 cameras; upload them to a computer or application; use Excel templates with formulas; export clips; use MAXQDA; review games; analyze performance; transcribe videos; view Document Portraits; check content of encoded videos; link videos; import clips into MAXQDA; and much more!By following these steps and using these tools correctly, you can become an expert in video analysis quickly!.
