| Keyword | Definition |
|---|---|
| 4K | Cinematic quality video resolution with a slightly wider aspect ratio to UHD with 4096x2160 pixels in total |
| 8K | Video resolution equivalent to 4 UHD screens with 7680x4320 pixels in total |
| aspect ratio | a ratio of the number of horizontal pixels to the number of vertical pixels of an image to give an indication of the shape (e.g. 16:9 for widescreen) |
| avi | uncompressed video file format suitable for high quality video editing |
| frame rate | the number of video still images displayed per second. More frames per second means a smoother, higher quality video |
| gif | compressed video file format suitable for short animations but doesn't support sound |
| HD | High Definition video resolution with 1920x1080 pixels in each frame. Suitable for standard size screens |
| mp4 | compressed video file format suitable for streaming or sharing online |
| SD | Standard Definition video resolution with 480 pixels vertically in each frame. Only suitable for small screens. |
| UHD | Ultra High Definition video resolution equivalent to 4 HD screens with 3840x2160 pixels in total |
| video resolution | the number of pixels on each frame of a video. A higher resolution means a clearer, sharper video but requires more space to store or more bandwidth to download |
