[x264-devel] how to avoid x264 to print 'VBV underflow'

[Pradeep Ramachandran]

On Sat, Sep 23, 2017 at 1:45 PM, qw <applemax82 at 163.com> wrote:

> Hi,
>
> I run x264, which print 'VBV underflow' sometime for some clips.
>
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 763, -2012 bits)
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 764, -7723 bits)
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 765, -2963 bits)
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 766, -443 bits)
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 767, -3235 bits)
> [libx264 @ 0x7fecf43ca160] VBV underflow (frame 769, -1309 bits)
>
> How can I make x264 not print this message, i.e. not violate VBV
> constraints?
>

What is the command line that you are using? Try increasing the vbv-bufsize


>
> Thanks
>
> B.R.
>
> Andrew
>
>
>
>
>
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>
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