What are the self-healing file formats?

It is known that there are self-healing file systems like e.g. ZFS, Btrfs, bcachefs and self-healing RAM, like e.g. ECC RAM or corresponding software implementations, which can correct single or multiple erroneous bits. What are there for self-healing file formats or projects to self-healing file formats for standard programs ? What does a file format mean? P.e: * .txt, .doc, tar.lz4, .mp4