544 Mp4 < 2026 Edition >

An inconsistency in how Adobe Experience Manager (AEM) computes asset types. Specifically, MP4 files were being incorrectly categorized because of a "dangling semicolon" in the MIME type property.

Despite having a non-standard pixel count, these MP4 files are designed to be stretched to a 4:3 or 16:9 aspect ratio during playback. 544 mp4

Asset Type Computation Is Inconsistent · Issue #544 - GitHub An inconsistency in how Adobe Experience Manager (AEM)

Most MP4 files today use H.264 (MPEG-4 Part 10) for video compression, which provides a high-quality image at a relatively low bitrate. 544 mp4