The terms "09", "Mono", "Transparente", and "Mp4" are frequently used in the context of digital video encoding, specifically for (alpha channels) used in motion graphics.
Finally, the extension. The MP4 container is the lingua franca of the internet. By wrapping this complex "Transparente" video and the "AC Mono" audio into an MP4, the creator had ensured universality. They had taken a specialized high-end asset and packaged it in a box that could be opened by a smartphone in a cafe in Paris or a laptop in a library in Tokyo. Ss Olivia 09 AC Mono Transparente Mp4
If you have the file on your device: