[MPlayer-users] MPplayer and installing a new gcc version

[RC]

On Tue, 26 Oct 2004 06:45:32 -0400
D Richard Felker III <dalias at aerifal.cx> wrote:

> 2 possibilities likely:
> 1. it's faster on _your_ cpu, not others.

Well, I'm just confirming the benchmarks I saw posted to -dev, so theres
a few others with the same results.

> 2. gcc3 makes libmpeg2 slower...? :) actually this is very likely..

Let's try that theory out...  dev-CVS-041023-06:08-2.95.3

time ./mplayer -vfm ffmpeg -nocache -nosound -vo null -benchmark
/home/root/TV/Nova\ 2004Oct26_20\:00.00.mpeg

BENCHMARKs: VC: 285.044s VO:   0.202s A:   0.000s Sys:  68.498s = 
353.744s BENCHMARK%: VC: 80.5793% VO:  0.0571% A:  0.0000% Sys: 19.3636%
= 100.0000%

Exiting... (End of file)

real    5m54.478s
user    4m59.050s
sys     0m12.400s

time ./mplayer -vfm libmpeg2 -nocache -nosound -vo null -benchmark
/home/root/TV/Nova\ 2004Oct26_20\:00.00.mpeg

BENCHMARKs: VC:   0.102s VO:   0.111s A:   0.000s Sys: 147.095s = 
147.308s BENCHMARK%: VC:  0.0689% VO:  0.0753% A:  0.0000% Sys: 99.8558%
= 100.0000%

Exiting... (End of file)

real    2m30.776s
user    0m14.390s
sys     0m8.480s

Different source video, but same bitrate, filesize, and length, and a
HUDE difference in mplayer when compiled with gcc3 and gcc2.  That must
be due to a lot more than just some compiler bugs.

> as i said before, this is not just theoratical bullshit. dvd is
> playable with libmpeg2, not playable with ffmpeg, for me!!!

That's unfortunate, but I think those few people who have very slow
systems could easily add one more option when running configure, for the
sake of preventing tons of problems, for the rest of MPlayer users.