mkvisr

converts your crap to ffv1 mkv

specially formulated for mxf-wrapped j2k but should work for lots of stuff

examples

convert a file

python mkvisr.py -i /path/to/file.mxf

convert a directory

python mkvisr.py -i C:/path/to/lotsOfFiles

rename the output to different directory

python mkvisr.py -i /path/to/file.mxf -o /path/to/output.mkv

for more info see:

matroska dev

ffv1 dev

flac dev

LoC sustainability docs