什么是 MPEG 文件?
面向广播和 DVD 的标准化视频格式
MPEG is an acronym for the ‘Moving Picture Experts Group,’ an organization that develops standards for encoding and decoding digital audio and video files. In conjunction with the International Electrotechnical Commission (IEC) and the International Organization for Standardization (ISO), MPEG works hard to ensure that compression standards are widely adopted and universally available to studios, producers, and consumers. Using MPEG compression, a multimedia file will be significantly smaller with little noticeable loss in quality. This makes transferring files over the Internet more efficient, which helps conserve Internet bandwidth. MPEG compression is so ubiquitous that the term ‘MPEG’ is commonly used to refer to a video file saved in an MPEG file format rather than the organization itself. These files usually have a ‘.mpg’ or ‘.mpeg’ file extension.
MPEG 文件的常见用途
- DVD 视频
- 数字电视
- 广播媒体
- 视频档案
- DVD 翻录
- 电视录制
- 广播采集
- 摄像机
谁会使用 MPEG 文件?
处理数字化旧素材的档案管理员、媒体图书馆员和后期制作团队经常处理 MPEG 文件,因为数十年的电视和 DVD 时代素材都是以这种格式制作的。法律和政府团队在审阅较旧的取证录像、听证录音和公共记录视频时,也会遇到 MPEG 文件。
MPEG 与 MP4:应该选择哪一个?
MPEG 文件通常在节目流中存储带 Layer II 音频的 MPEG-1 或 MPEG-2 视频,而 MP4 是较新的 MPEG-4 Part 14 容器,通常承载 H.264 视频和 AAC 音频。MP4 在显著更低的比特率下即可达到相当的画面质量,是网页、移动和流媒体播放的标准。MPEG 仍是 DVD 时代和旧广播素材的原生格式,因此它是你为归档保真度而保留的格式,而 MP4 则是你为现代分发而选择的格式。
将 MP4 转换为文字