[MPlayer-cygwin] Is it worth compiling mplayer for performance improvement?

[Sascha Sommer]

> Hi Sacha
> I have an PIII-550 and sometimes (especial on camara moves) the playback
of
> a movie is not smooth.

Can you confirm that there is a line "autosync=100" in your mplayer/config
file?
If not add it there.

> Just a question. If i compile mingw-mplayer for my computer, will there be
a
> significant performance improvement?

Are you using the latest binary package? Afair all of them were compiled
with runtime
cpudetection. Recompiling without it gave me only very small performance
gains.
It is possible that this is different for pentium3.
The problem for all faster machines is that the runtime cpudetection seems
to be buggy on
windows and doesn't detect SSE (maybe also 3dnow etc.). It would be cool if
someone with p3 or later could fix this because enabling those may give
bigger performance gains.

> I habe the M$ Visual Studio v.6 compiler, as far as i know there is a
> special gcc-compiler for mingw and maybe i can get hold of a intel
compiler.
> Which compilers could be used? I heard that the intel compiler producer
very
> fast code. Did anybody succeed in using it for compiling mplayer (linux or
> win32)?

Afair a few people compiled mplayer with the linux version of icc but I
don't think all
patches for this are already in cvs. The problem with other compilers than
the
mingw/cygwin gcc is that you won't be able to compile mplayer's asm
optimised code.
I am not sure if it is possible to mix icc compiled objects with the gcc
objects on windows.

Sascha