[Ffmpeg-devel] Ratecontrol problem

Michael Niedermayer michaelni
Thu Oct 12 15:13:40 CEST 2006


On Thu, Oct 12, 2006 at 02:51:36PM +0200, Thomas Parmegiani wrote:
> Hi all !
> I have some problems to reencode a MPEG2 file (IBP, 1920x1080, 30 Mbs) to a
> 15 Mbs I only
> file (I only is important as I need it).
> At the moment my main problem is not the quality but the target bitrate. I
> get too many rc buffer underflow warnings ! Can anyone help me about my
> problem ?

first use latest svn

> Here is the command line I use : ./ffmpeg -i /e/test.ts -b 15000000 -minrate
> 15000000 -maxrate 15000000 -bt 1 -bufsize 1500000 -intra /e/test2.ts

-bt 1 is significantly too small

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In the past you could go to a library and read, borrow or copy any book
Today you'd get arrested for mere telling someone where the library is

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