| Subject | English | Portuguese |
| comp., MS | audio codec | codec de áudio (The digital encoding used to represent audio data) |
| commun. | codec approach | método do codec |
| commun. | codec specification | especificação do codec |
| commun. | digital codec | codec digital |
| commun. | ideal codec | codec ideal |
| comp., MS, Braz. | image codec | codec de imagem (Software or an algorithm that converts images to a specified file format (encoder) or from file format to displayed image (decoder)) |
| IT, el. | monochip codec filter | filtro codificador-descodificador numa única pastilha |
| el. | PCM codec | codec PCM |
| pwr.lines. | PCM codec | codificador/descodificador PCM |
| IT | per line codec | codec monocanal |
| commun. | reference codec | codec de referência |
| commun. | reference speech codec | codec de voz de referência |
| el. | single chip codec | circuito integrado codificador/descodificador |
| IT | single-channel codec | codec monocanal |
| comp., MS, Braz. | Windows Media Audio codec | codec de áudio do Windows Media (A codec used to compress and decompress audio streams) |
| comp., MS, Braz. | Windows Media Screen codec | codec de tela do Windows Media (A codec used to compress and decompress sequences of screen images) |
| comp., MS, Braz. | Windows Media Speech codec | codec Windows Media Speech (A codec used to compress and decompress audio streams with an emphasis on speech) |
| comp., MS, Braz. | Windows Media Video codec | codec de vídeo do Windows Media (A codec used to compress and decompress video streams) |