: A video container format developed by Apple, very similar to MP4 but occasionally containing DRM (Digital Rights Management) copy protection. Common Contexts
: This usually denotes a sequence number or an entry ID in a database or content series. #150 0gnd9h7x4vsjin23gz1ed_source.M4V
: Indicates that this is the original, high-quality master file before any compression or transcoding (e.g., converting to 720p or 1080p for streaming) has occurred. : A video container format developed by Apple,