Again a bit late, but I had the same type of requirement. Proxmox backups on an alternate server, and needed a couple files from one of the backups.
A bit of duckduckgo and I discovered a python project that extract vma files: VMA Extractor (https://github.com/jancc/vma-extractor)
This fit the bill perfectly for me as I only needed python, and zstd on the backup storage server.
Then uncompress the backup, extract the backup using vma.py and then you have the raw images.
A bit of duckduckgo and I discovered a python project that extract vma files: VMA Extractor (https://github.com/jancc/vma-extractor)
This fit the bill perfectly for me as I only needed python, and zstd on the backup storage server.
Then uncompress the backup, extract the backup using vma.py and then you have the raw images.