eac3to - audio conversion tool

[offroad 0]

[quote]eac3to v2.02, freeware by madshi.net

- can show information about audio files
- can decode and encode various audio formats
- can remove dialog normalization from AC3, E-AC3, DTS and TrueHD tracks
- can extract AC3 stream from Blu-Ray TrueHD/AC3 tracks
- can extract TrueHD stream from Blu-Ray TrueHD/AC3 tracks
- can extract DTS core from DTS-HD tracks
- can remove DTS zero padding and repair outdated DTS-ES headers
- can apply positive or negative delay to decoded audio data
- can reduce bitdepth of decoded audio data by using TPDF dithering
- can resample decoded audio data (using "r8brain")
- can apply/reverse PAL spee[beeep] on decoded audio data (using "r8brain")

eac3to sourcefile[+sourcefile2] destfile [-options]

Options:
-448 use "192", "448" or "640" kbit/s for AC3 encoding
-768 use "768" or "1536" kbit/s for DTS encoding
-core extract the DTS core of a DTS-HD track
+/-100ms apply a positive or negative delay
-0,1,2,3,4,5 remap the channels to the specified order
-blu-ray remaps channels from Blu-Ray LPCM order to normal order
-downmix downmix 7 or 8 channels to 6 channels
-down16 downconvert decoded audio data to 14..23 bit
-slowdown reverse PAL spee[beeep] (25.000 -> 24.000/1.001 fps)
-spee[beeep] apply PAL spee[beeep] (24.000/1.001 -> 25.000 fps)
-resampleTo48000 resample audio to "44100", "48000" or "96000" Hz
-quality=4 slowdown/spee[beeep]/resampling quality (0 = low; 4 = very high)
-mixlevel=181 back channel mixing level (0 = off; 256 = full volume)
-8 PCM file has "1".."8" channels
-16 PCM file is "16" or "24" bit
-little PCM file is "little" or "big" endian
-96000 PCM file is "44100", "48000", "96000" or "192000" Hz
-override forcefully overrides PCM auto detection with manual values
-sonic/-nero force the use of a specific decoder (not recommended)
-keepDialnorm disables dialog normalization removal (not recommended)

Supported source formats (only in demuxed form):
(1) RAW, (L)PCM
(2) WAV (PCM only)
(3) AC3, E-AC3
(4) DTS, DTS-ES, DTS-96/24, DTS-HD Hi-Res, DTS-HD Master Audio
(5) MLP, TrueHD, TrueHD/AC3
(6) FLAC

Decoded audio data can be stored as / encoded to:
(1) RAW, (L)PCM
(2) WAV (PCM only)
(3) AC3
(4) DTS
(5) FLAC

For best AC3, E-AC3 and TrueHD decoding you need:
(1) Nero 7 (Nero 8 won't work!)
(2) Nero HD-DVD / Blu-Ray plugin

For best DTS decoding you need:
(1) "Sonic HD Demuxer" DirectShow filter
(2) "Sonic Cinemaster Audio Decoder 4.3" DirectShow filter

For DTS encoding you need:
(1) SurCode DVD DTS - version 1.0.21 or newer[/quote]

link:

[url="http://forum.doom9.org/showthread.php?t=125966"]eac3to[/url]