![]() ![]() ![]() Some codecs can be wrapped in multiple different containers. For example, MP4 is a container, and can hold different types of video compression, for example, MPEG-2 Part 2, MPEG-4 AVC, or HEVC, as well as audio (again compressed in a variety of formats) and metadata (for example subtitles). NOTE: It's important to distinguish between file container formats and compression formats, or codecs. You might want to convert MP4 files to WMV where you know the end viewer is using Windows, and you need to add DRM to restrict unlicensed reproduction of the file. WMV stands for Windows Media Video and is a series of video compression codecs that were designed for early internet video streaming and HD-DVD and Blu-Ray physical media, Video in this file format is natively playable on Windows devices and can have DRM content management attached. Although the format is lossy, this enables small file sizes, whilst retaining a good level of video quality. MP4 is an international standard and probably the most popular video and audio file container at present, with native support in Windows, Macs, iOS, and Android devices.
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