Video that checks itself before it plays.
BVF is Bolrach's own video format. The player checks every piece of a BVF video against Bolrach's signature before showing it, a protected video opens only for a viewer who is signed in, and chapters ride inside the file.
How BVF works
Signed from the start
Each video comes with a manifest that Bolrach signs. The player reads the signature first and refuses a manifest anyone else has edited.
Checked piece by piece
Every few seconds of video carries a fingerprint. If a single byte is wrong, the player fetches it again or drops to another quality instead of showing it.
Lighter on data
Phones that decode AV1 in hardware get AV1. Every other phone gets H.264, so nobody's battery pays for the saving.
What happens to a copied protected video
| Who tries to play it | Result |
|---|---|
| The Bolrach Player, viewer signed in | Plays |
| The Bolrach Player, viewer signed out | Refused before any video loads |
| The Bolrach Player with a forged pass | Refused |
| The copied file in an ordinary browser | Will not decode |
| The copied file in ffmpeg, the decoder inside many desktop players | Grey screen |
The player rows were tested in Chrome on a private Swepty video on 9 October 2026, the copied-file rows on a Swepty reel on 8 October.
The same picture on less data
This is the screen recording shown above, encoded five ways in each format and scored against the lossless original with VMAF, the industry's standard measure of how a picture looks to a viewer. Higher is better, and 100 is a perfect match.
Bolrach's own 20-second recording of listing.ng and swepty.com scrolling, 1080x1920, measured 7 October 2026. Other videos save different amounts.
Moments
Each scene in a BVF video becomes a Moment with its own lasting name. A comment, a product tag or a quote attaches to the Moment, so it stays in the right place when the video is re-encoded, cropped or dubbed.
bm_01K71T2000E008000000000001