[x264-devel] FFmpeg x264 encoder costs different bandwidth in debug and release mode

Jason Garrett-Glaser darkshikari at gmail.com
Wed Aug 26 05:54:51 CEST 2009


On Tue, Aug 25, 2009 at 8:49 PM, Leon Liu<llfeng1999 at yahoo.cn> wrote:
> Hi, All
>
>   My application uses FFmpeg x264 as a H264 encoder for encoding live video
> stream.I found out my application costs different bandwidth between debug
> version and relase version, although they use the same FFmpeg library.The
> release version costs about 500kbps for VGA with 12fps, but the debug
> version costs 3Mbps.I 'm confused.My compiler is VC9.
>   Can anybody help me to avoid it?Thanks.
>
> Leon

That sounds like a potential miscompilation issue, but we don't
support MSVC, since it cannot compile current x264 in the first place
as it does not support C99.  Use a supported compiler, such as GCC or
ICC.

Dark Shikari


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