"Accurately" define max bitrate with x264

[pepelugil]

Hi,

I want to reencode a video in a middle of a seamless branched disk playlist and in order to Scenarist to accept it, it must have the same (max) bitrate as the other videos in the playlist.

The original videos in Scenarist have a (max) bitrate of 31,499,776bps. If I set --vbv-maxrate 31500 in my reencode I'll end with a bitrate of 31,499,968bps and if I set --vbv-maxrate 31499 the bitrate will be 31,498,944bps and in both cases, Scenarist will complain when trying to mux:

Error : Invalid Connection condition,  because Bit_rate differs between current Video and previous Video.

Is there any way to define in a more precise way max bitrate or is there any tool to "fake" this value so Scenarist can mux this project without reencoding all videos in the playlist?

Greetings