[Ffmpeg-devel] FLAC encoder

[Corey Hickey]

Justin Ruggles wrote:
> Wonderful! Thanks for the feedback. "flake -8" is not an equal of "flac
> -8", but it's close. Try "flake -10" to see if the compression increases. :)

Ah. Here are new results. The times are slightly smaller for both
because I forgot to disable CPU frequency scaling last time.

$ time flac -8 audiodump.wav -o flac.flac

flac 1.1.2, Copyright (C) 2000,2001,2002,2003,2004,2005  Josh Coalson
flac comes with ABSOLUTELY NO WARRANTY.  This is free software, and you are
welcome to redistribute it under certain conditions.  Type `flac' for
details.

options: -P 4096 -b 4608 -m -l 12 -e -q 0 -r 0,6
audiodump.wav: wrote 19010895 bytes, ratio=0.598

real    0m18.437s
user    0m18.187s
sys     0m0.213s


$ time flake/flake -10 audiodump.wav flake.flac
Flake: FLAC audio encoder
Signed 16-bit 44100 Hz stereo
samples: 7953408
blocksize: 16384
frames:       486 | samples:   7953408 | bytes:  18674365 | bitrate:
828 kbps

real    0m5.778s
user    0m5.605s
sys     0m0.103s


$ ls -l audiodump.wav flac.flac flake.flac
-rw-r--r-- 1 bugfood bugfood 31813676 2006-05-27 00:49:48 audiodump.wav
-rw-r--r-- 1 bugfood bugfood 19010895 2006-05-27 00:49:48 flac.flac
-rw-r--r-- 1 bugfood bugfood 18674365 2006-05-27 11:07:52 flake.flac


Even better. :)

-Corey