in theory by adding ' -c timeinterval in seconds' as argument {in addition to two other mandatory args} to bdwrite, manually for now...
"Theoretical" not working. Testing this does not require the actual bluray writer. All one has to do is run BD Render under the File pulldown and take the defaults. Once done, you will see a directory in /tmp called bd_20220423_time. Inside this directory, there is a file bd.sh. Edit this file and on the bdwrite line, add the 3rd paramater. I tried adding -c 45000, then 45000, then even c and always get " cant scan media: c" or instead of c, whatever I typed in. It must be allowing for additional media as the third parameter (and maybe a slew of media sources too).