Pronunciation: [kˈiːɪŋ] (IPA) 
The word "keying" is spelled with the letter "k" and the gerund suffix "-ing," which is commonly used to form present participles. The /k/ sound is represented by the letter "k" in the English language. The vowel sound is represented by the letter "e," which makes the short /ɛ/ sound. The final consonant sound of the word is represented by the letter "g," which makes the /ɡ/ sound. The IPA phonetic transcription for "keying" is /kiɪŋ/.
Keying is a term that has multiple meanings and applications across different fields. In general, keying refers to the act of entering specific information or data using a keyboard. In the context of computing, keying involves pressing keys on a keyboard in order to input instructions or text into a computer system. This process is commonly used for tasks such as typing messages, entering account details, or executing commands.
In the field of video production and visual effects, keying refers to a technique used to remove or change the background of a video footage. This process involves electronically isolating a specific color or set of colors from the foreground object (typically a person or an object) and replacing the background with a different scene or image. This technique is popularly used in film, television, and advertising industries to create visually stunning and seamless visual effects.
Additionally, keying can also refer to the manipulation of cryptographic keys in the field of cryptography. Cryptographic keying involves the process of generating, managing, and using cryptographic keys to secure sensitive information, authenticate users or devices, and enable secure communication or data encryption. These keys are essential components of various encryption algorithms and serve as the foundation for secure data transmission and storage.
Overall, keying can encompass the act of inputting information through a keyboard, removing or replacing video backgrounds using color isolation techniques, or managing cryptographic keys for secure communication and data protection.
The term "keying" has multiple etymologies, depending on its context:
1. Keying (noun): In the context of video editing or special effects, "keying" refers to the process of isolating and removing a specific color or range of colors from an image or video, allowing it to be replaced with another. The etymology of this usage comes from the early days of film and television, where a "key" or a "key signal" was used to control or select a specific element in the visual composition. This usage dates back to the mid-20th century.
2. Keying (verb): In the context of keyboards or typing, "keying" refers to the act of pressing or striking a key on a keyboard to input characters or commands.
