[MEncoder-users] "requested bitrate is too low." in 2-pass x264 encoding

[x4base]

2010/4/9 Grozdan <neutrino8 at gmail.com>:
> You do know that this will create an AVI file, right? Regardless of
> what extension you give it, it'll still be an AVI. This is not ffmpeg
> so if you want an mp4, use -o lavf but beware that mencoder is broken
> outputting to anything but AVI, MPEG PS and RAW. I guess with lavf and
> mp4 encoding WITHOUT b-frames, it'll do just fine but the moment you
> add b-frames to your encode (and you're adding them since by default
> they are enabled) it'll create a broken mp4

Thanks for the reply and thanks for reminding me.
I didn't notice the difference before, indeed.

>
> Looks like an libx264 issue but I may be wrong - mencoder just parses
> stuff from libx264 so if there's the problem, better ask on the
> x264-devel list
>

You may be right.
The error disappered after I switch to an older revision of libx264.
I have post in the x264-devel list, and I'm waiting for the reply.