Without direct access to the originating museum’s asset management system, we can hypothesize three plausible scenarios for the contents of Avs-museum-100420-FHD -UPD- .
ffmpeg examples:
Since "Avs-museum-100420-FHD" appears to be a file identifier or a specific archive code, I have drafted a versatile post suitable for a blog, a Patreon update, or a digital archive newsletter. Avs-museum-100420-FHD -UPD-