I'm encoding a video with MEncoder, and in mp3lame options there are five VBR methods to choose: 0=CBR, 1=MT, 2=RH, 3=ABR, 4=MTRH.
What is the difference between MT, RH, and MTRH?
Which of these five algorithms do you think are best and which the worst?
IIRC these options were relevant ~20 years ago.
MT, and RH are just the initials of the person that implemented it: Mark Taylor, and Robert hegemann. MTRH means a combination of both.
You can check the history to know a bit more about them, but they are old things:
If that encoder forces you to switch, you will probably need to select 4.