On Tue, Mar 08, 2016 at 22:16:50 -0500, Ganesh Ajjanagadde wrote: > ffmpeg -i sin.flac -acodec aac -y sin_new.aac 5.22s user 0.03s system 105% > cpu 4.970 total
Just wondering: Is this the sin.flac from ffmpeg -f lavfi -i aevalsrc="sin(440*2*PI*t):s=48000" -t 300 -y sin.flac ?? Is a sinusoidal signal good enough to benchmark an audio encoder? It only requires one very narrow frequency band, after all, no psychoacoustics, ... I don't see differences in general encoding speed of sine vs. noise, but I didn't check the influence on your code improvements. Agreed, noise doesn't do much for psychoacoustics probably either. (BTW, if just inspecting ffmpeg runtime without use of benchmarking start/stop markers, I use lavfi directly, to avoid the overhead of flac decoding. And not aevalsrc - sine and even anoisesrc are 10x faster.) Moritz _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
