[Ffmpeg-devel] Problem in optimization in PowerPC...

[Luca Barbato]

??? wrote:
> When I optimize my ffmpeg on PPC970 works using -tune=970 like this:
> 
> #./configure --prefix=/home/ryan/ffmpeg_ppc_tune --tune=970 --powerpc-perf-
> enable
> 
> WARNING: Tuning for PPC970 but AltiVec disabled!


use --tune=G5

do not use powerpc-perf-enable (I'm planning to remove it since it is
already cumbersome...)

> 
> ?.
> 
>  
> 
> After warning the install continue (make and make install)
> 
> And to test ffmpeg I tried simple decode h.264 like this:
> 
> #/ffmpeg -s 1920x1088 -i ../../hd.264 -s 1920x1088 out_hd.yuv
> 
> ?.
> 
> picture size invalid (1920x0)

???

> 
> Segmentation fault

a backtrace would be nice...

> 
>  
> 
> With out optimization, it works perfect.

as in?

> 
> I don?t why this happen?

I cannot reproduce it

> 
> Somebody have a document related with this?
> 

Define better this ^^

>  
> 
> Ps. And I want to know how to use ./libavcode/ppc/* file enable.
> 
> It looks like related with AltiVec for ppc optimization.
> 
> You know how?
> 

Probably

btw please don't attach image or anything when you send emails on this
mailing list.

lu

-- 

Luca Barbato

Gentoo/linux Gentoo/PPC
http://dev.gentoo.org/~lu_zero