問97
頻出度★☆☆
拡張子 “avi” が付くファイルが扱う対象として, 最も適切なものはどれか。
平成28年度 春期 ITパスポート試験 問97
テクノロジ系情報メディア › マルチメディア技術
This question's explanation and your answers so far.
解説
問 97
Incorrectア
Typical extensions that handle audio only are “wav”, “mp3”, “aac”, and so on. Although AVI also contains audio, it is essentially a video format with images, not a format whose sole target is audio, so it is wrong.
Incorrectイ
Extensions that handle still images (pictures) are “jpg”, “png”, “gif”, “bmp”, and so on. AVI is a video format made up of consecutive frames, not intended for still images, so it is wrong.
- ウ
正解 The extension “avi” stands for Audio Video Interleave (AVI), a video file format defined by Microsoft. It stores video data and audio data alternately (interleaved) within a single file for synchronized playback, so it is a “video container”, and the type of content it handles is “video”. Therefore the correct answer is ウ.
Incorrectエ
Extensions that handle documents are “doc”, “pdf”, “txt”, and so on. AVI is not a document file format, so it is wrong.
ここがポイント
- AVI (Audio Video Interleave) is a video file format that stores video and audio alternately; its extension is “.avi”. The type of content it handles is video.
- Remember the correspondence between extensions and file types: audio = wav/mp3, still image = jpg/png/gif, document = doc/pdf/txt, video = avi/mp4/mov, and distinguish them.
用語