The combination convert024120 min new is nonsensical in standard video encoding terminology. For example, you would never convert a file to “024120 minutes” (that is 1,677 hours or nearly 70 days). You would not name a file “convert024120” as a format.

Mara scrolled through frames, and there she was again: a younger version, captured by some passerby at a protest years ago, a flash of her face among a crowd. The file had provenance that stitched into her life: a childhood drawing that matched a symbol on one of the embroidered maps, a bookstore receipt from a night she’d forgotten, a photo of a café table where she’d once left a book with a sticky note that said, "For you — continue."

It looks like you’re asking for help understanding or converting a filename or string that seems to contain video metadata:

At 1:41:20, the timestamp that matched the file name, a shot of a narrow room showed a chalkboard with a single sentence: "If you find this after conversion, you are why we hid it." The subtitles translated it into text that crawled across the screen and stopped, steady as breath. The camera turned slowly to a corner where a stack of letters sat tied with twine. The topmost envelope was addressed in a handwriting she knew by reputation: Mara Leung. It could not be coincidence. Her last name was hardly unique, but the letters were specific: the tiny loop she made on her lowercase g. She felt her scalp prickle.