On Sun, Jun 12, 2016 at 07:56:31AM +0700, Muhammad Faiz wrote: > give high quality resampling > as good as with linear_interp=on > as fast as without linear_interp=on > tested visually with ffplay > ffplay -f lavfi "aevalsrc='sin(10000*t*t)', aresample=osr=48000, > showcqt=gamma=5" > ffplay -f lavfi "aevalsrc='sin(10000*t*t)', > aresample=osr=48000:linear_interp=on, showcqt=gamma=5" > ffplay -f lavfi "aevalsrc='sin(10000*t*t)', > aresample=osr=48000:exact_rational=on, showcqt=gamma=5" > > slightly speed improvement > for fair comparison with -cpuflags 0 > audio.wav is ~ 1 hour 44100 stereo 16bit wav file > ffmpeg -i audio.wav -af aresample=osr=48000 -f null - > old new > real 13.498s 13.121s > user 13.364s 12.987s > sys 0.131s 0.129s > > linear_interp=on > old new > real 23.035s 23.050s > user 22.907s 22.917s > sys 0.119s 0.125s > > exact_rational=on > real 12.418s > user 12.298s > sys 0.114s > > possibility to decrease memory usage if soft compensation is ignored
interresting can you add some fate tests ? (that way this also could be easily tested for platform specific bugs) [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Never trust a computer, one day, it may think you are the virus. -- Compn
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