I have archival videos digitized using FFV1 codec in .mkv containers and I need to split the files up without losing any of the quality. Does one of your programs do this on mac?
Welcome!
MKVToolNix GUI & the CLI tool it uses under the hood, mkvmerge, can split files. In the GUI the functionality is in the multiplexer’s “Output” tab.
mkvmerge only ever operates losslessly as it doesn’t contain any kind of decoding or encoding functionality. It solely operates on the container level.