Aymeric Mansoux wrote: > Olm-e said : > >> Aymeric Mansoux wrote: >> >>> Olm-e said : >>> >>> >>>> ok, thanks for the rather clear answer ... >>>> >>>> from experience, I only have tested and witnessed (huge) difference in >>>> video compression time (i.e. with ffmpeg2theora) on 64bit compared to >>>> 32bit installations ... on sound parts, I must admit I have not realy >>>> made tests to compare... >>>> >>>> >>> Ok, could you make some benchmarks if you have time? >>> like... for example how ffmpeg2theora, ffmpeg, oggenc, compare on the >>> same 64bits machine with: >>> - amd64 kernel on a 386 Debian OS >>> - amd64 kernel on a amd64 Debian OS >>> >>> >>> >>> >> test done : >> on a AMD Phenom 9950 with 4 gig ram, systems installed on USB drive (8 >> gig with 2 root partitions in ext3 for test systems) >> >> for a 4min57sec mpeg2 PAL DVD file (720x...@9000kb/s) transcoding to >> ogg/theora with ffmpeg2theora default (ffmpeg2theora bla.dvd -o bla.ogv ) >> >> on a lenny 5.01 amd64 with kernel 2.6.26-2-amd64 it took >> 10min59sec >> >> on a lenny 5.01 i386 with same kernel it took >> 13min34sec >> >> on the same lenny with kernel 2.6.26-2-686 it took >> 14min58 >> > > Thanks, that's really useful info! > > what about the amd64 kernel from the lenny i386 distribution? > > Also to make the test more complet it would be helpful to know which gcc > flags have been used for the ffmpeg2theora binaries. > > a. > > ha I probably miswrote it : I used the amd64 kernel from the i386 distro, just it has the same "name" ... (so I supposed it was same kernel ... )
for the ffmpeg2theora gcc flags, how do I see it ? I just apt-get installed it ... Ol. >> I'll test with oggenc and ffmpeg tomorow >> >> cheers, >> >> Ol. >> >> >> --- >> [email protected] >> irc.goto10.org #pure:dyne >> >> > > --- > [email protected] > irc.goto10.org #pure:dyne > > --- [email protected] irc.goto10.org #pure:dyne
