I've been trying to collect bonus material lately, often from discs I've ripped in the past but only for the main movie content and nothing else.
My typical method for doing this is to play a disc using VLC (occassionally resorting to (gack!) a stand-alone Blu-ray player when VLC won't cooperate) and noting the run time and chapter count of each title that I select so that I can match things those numbers up with the titles listed by MakeMKV.
This is usually successful, but sometimes (too often lately) I can find nothing listed by MakeMKV which matches the duration and chapter counts I'm looking for. These aren't short titles (below the minimum title length I've set) which are missing. The extra I'm ripping right now, using HandBrake as a fallback method, is Behind The Matrix, which clocks in at 43:06. This title wasn't listed at all by MakeMKV.
If there is no work-around for this right now (other than using different software, like HandBrake) what I'd really like to see as a future feature in MakeMKV is a drop-down list of all unlisted titles (including those below minimum length) showing title number, duration, and chapter count.
Anything selected from this menu would leave that menu and be added to the main list of available titles.
Too many inaccessible titles
Re: Too many inaccessible titles
If you make a decrypted backup of the disc (icon of yellow folder with green arrow), you can open the <backup>/BDMV/STREAM folder and see all the .m2ts files from the blu-ray. One of them is probably 43:06 long. Tools like MKVToolNix can turn that .m2ts file into a .mkv file.
If MakeMKV is confused at not showing a title because it thinks the title is a duplicate, you can sorta force it do the right thing. See this post: https://forum.makemkv.com/forum/viewtopic.php?p=139963#p139963
If MakeMKV is confused at not showing a title because it thinks the title is a duplicate, you can sorta force it do the right thing. See this post: https://forum.makemkv.com/forum/viewtopic.php?p=139963#p139963