FFV1 — FF Video 1 — is the open-source lossless video codec preferred for digital archives. Developed within the FFmpeg project starting in 2003 and standardised through IETF in 2025, FFV1 stores every pixel of the original master without any quality loss — perfect reconstruction guaranteed mathematically. Compression ratios are modest (~3:1 typical, so a 1-hour 4K master at FFV1 still weighs ~200 GB), but that's the price of true losslessness.
What makes FFV1 special for archives is more than just losslessness. It includes per-frame CRC integrity checksums built into the file format, so a file corruption introduced years later by bad storage is detectable rather than silent. It's open-source, royalty-free, and patent-free, immune to the corporate lifecycle and licensing changes that have killed other archive formats. It's mature and widely supported — every recent version of FFmpeg encodes and decodes it. And the Library of Congress in December 2023 elevated FFV1 in MKV containers to a "Preferred Format" for video preservation, joining an exclusive group with specific archival pedigree.
For a product team, FFV1 is an archival concern, not a delivery one. You'll likely encounter it if you ingest material from heritage broadcasters, film preservation projects, oral-history institutions, or museums — they increasingly standardise on FFV1 for their master copies. When ingesting, transcode to your delivery codecs (H.264/HEVC/AV1) for streaming, and consider keeping the FFV1 source in cold storage as the canonical archive. Companies producing premium VOD content can adopt FFV1 themselves for long-term master storage — at the cost of large files in exchange for total quality preservation across decades.
