For a format like , which appears to be a specialized or high-compression container (similar to standard MPEG-4 Part 14 but potentially optimized for specific hardware or workflows), a powerful new feature would be Contextual Metadata Anchors . Contextual Metadata Anchors
: For high-resolution files that typically hit the CPU hard during decompression, this feature would allow the MP4 to carry its own low-resolution proxy file internally. Video editors could toggle to this internal proxy for lag-free scrubbing and only use the full-quality bits during the final render. Daysy4 mp4
mp4 videos render incomplete WITHOUT ANY WARNING | Community For a format like , which appears to