Font size options
Increase or decrease the font size for this website by clicking on the 'A's.
Contrast options
Choose a color combination to give the most comfortable
contrast.
If you are looking for research related to the components of that string, here are the most likely areas of relevance: 1. Video Compression and MP4 Standards
The number 21676 appears in various contexts that may have associated documentation:
: If "21676" is a PMID, it would refer to a very old medical study from the 1940s-50s.
: A paper ID like 2106.076... might be what you're recalling.