XPlayer vs NordicAngle

XPlayer is a video player that lets you play two videos at the same time. You can place two videos side by side or overlay them, making it ideal for comparing movements during dance practice, golf swing analysis, and more. ## Features • Play two videos simultaneously. • Play a single video if you prefer. • Trim videos to a specific time range for playback. • Adjust playback speed (slow motion or fast playback). • Repeat playback. ## Video Layouts Two videos can be displayed in the following layouts: • Side by side • Top and bottom • Overlay with adjustable transparency • Single video display ## Use Cases Compare two videos to analyze movements, such as dance performances or golf swings, and improve your form. ## For Customers Who Purchased the "Remove Ads" Lifetime Version More than 10 years have passed since XPlayer was first released. To support its continued development and future updates, the "Remove Ads" lifetime version is no longer available for purchase starting with version 3.4 and has been replaced by the XPlayer Plus subscription. If you previously purchased the "Remove Ads" lifetime version, you will automatically receive lifetime access to XPlayer Plus at no additional cost. You can continue using the ad-free experience without paying for a subscription. Your purchase is normally restored automatically when the app starts. If it is not restore automatically, open Settings, select "Manage Subscription", and tap "Restore" to restore your purchase. ----------------- [Term Of Use] https://policies.reafo.io/terms/xplayer/en/ [Privacy Policy] https://policies.reafo.io/privacy/en/

■Overview■ Nordic Angle is a smartphone application developed in collaboration with Athletic Training Laboratory at Waseda University (instructed by Professor Norikazu Hirose) and S-CADE. Co., Ltd. AI automatically detects landmarks at the hip, knee, and ankle joints. Based on the detected landmarks, it calculates the break-point angle and the hip flexion angle at the break-point during the Nordic hamstring exercise. A smaller break-point angle indicates that the upper body can lean further forward, suggesting stronger eccentric hamstring strength. Therefore, regular measurement of the break-point angle suggests that a smaller value is associated with a lower risk of hamstring injury. ■How to use■ 1. The device is placed about 3 m to the left and right of the person, with the participant centered in the frame. 2. When the person is ready, record a video at the setting (60 fps). 3. The person leans forward as slowly as possible from a kneeling position, and then leans forward as far as possible. 4. Please trim it short from the initial and final parts of the motion of the person. 6. Open Nordic Angle and select a video. 7. The analysis zone will be restricted to the participant only, excluding the partner holding the participant's ankles. ■Notes■ ・The entire body of the person should be shown. ・Loose-fitting clothing will reduce detection accuracy.