Soft82.com » Windows » Audio & Video » Rippers & Encoders » eac3to 2.60

eac3to Description

Audio conversion tool

Code:

eac3to v2.60, freeware by madshi.net

- can show information about audio, video and VOB/EVO/(M2)TS 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- can remove DTS zero padding and repair outdated DTS-ES headers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 audio delays
- can reduce bitdepth of decoded audio data by using TPDF dithering
- can resample decoded audio data (using "r8brain")
- can apply/reverse PAL speedup on decoded audio data (using "r8brain")
- can demux all video and audio tracks of an EVO/VOB/(M2)TS source file
- can list available titles of Blu-Ray and HD DVD discs
- can extract Blu-Ray and HD DVD chapter information and subtitles
- can mux MPEG2, VC-1 and h264 video tracks to Matroska
- can remove pulldown flags from MPEG2, VC-1 and h264 video tracks

eac3to sourcefile[+sourcefile2] [trackno:] [destfile|stdout] [-options]

Examples:
eac3to source.pcm destination.flac
eac3to source.thd destination.flac destination.ac3
eac3to source.evo 1: chapters.txt 2: video.mkv 3: audio.flac 5: subtitle.sup
eac3to feature_1.evo+feature_2.evo movie.mkv
eac3to blurayMovieFolder movie.mkv

Options:
-448 use e.g. "192", "448" or "640" kbps for AC3 encoding
-768 use "768" or "1536" kbps 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
-down6 downmix 7 or 8 channels to 6 channels
-down2 downmix multi channel audio to stereo (Dolby Pro Logic II)
-mixlfe mix LFE in (when doing stereo downmixing, see "down2")
-down16 downconvert decoded audio data to 14..23 bit
-slowdown reverse PAL speedup (25.000 -> 24.000/1.001 fps)
-speedup apply PAL speedup (24.000/1.001 -> 25.000 fps)
-resampleTo48000 resample audio to "44100", "48000" or "96000" Hz
-quality=4 slowdown/speedup/resampling quality (0 = low; 4 = very high)
-quality=0.50 Nero AAC encoding quality (0.01 = low; 0.99 = very high)
-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)
-demux demuxes 1st video track and all audio and subtitle tracks
-stripPulldown strips the pulldown from MPEG2 video tracks
-keepPulldown disable removal of pulldown for MPEG2, h264 and VC-1 tracks
-skip2 skips the first 1..99 VC-1 sequence headers
-seekToIFrames make all h264/AVC "I" frames seekable
-24p/30p/60i force the use of the specified framerate for h264 muxing
-check checks if the source EVO/(M2)TS file is clean.
-test checks if the external filters are installed & working

Supported source formats:
(1) RAW, (L)PCM
(2) WAV (PCM, DTS and AC3)
(3) AC3, E-AC3
(4) DTS, DTS-ES, DTS-96/24, DTS-HD Hi-Res, DTS-HD Master Audio
(5) MP1, MP2, MP3 audio
(6) AAC audio
(7) MLP, TrueHD, TrueHD/AC3
(8) FLAC
(9) EVO/VOB/(M2)TS

Decoded audio data can be stored as / encoded to:
(1) RAW, (L)PCM
(2) WAV (PCM only)
(3) WAVs (multiple mono WAV files, PCM only)
(4) AC3
(5) DTS
(6) AAC
(7) FLAC

For best AC3, E-AC3 and AAC 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) ArcSoft DTS Decoder - version 1.1.0.0 or newer

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

For AAC encoding you need:
(1) Nero AAC Encoder

For video muxing you need:
(1) Haali Matroska Muxer

If you prefer a graphical user interface, here's are one (not written by me):

http://forum.doom9.org/showthread.php?t=135095

links:

arcsoft: http://www.arcsoft.com
nero: http://www.nero.com
sonic: http://www.sonic.com
dts: http://www.surcode.com
libav: http://www.mplayerhq.hu
aften: http://win32builds.sourceforge.net/aften/index.html
flac: http://sourceforge.net/project/showf...ckage_id=12675
r8brain: http://www.voxengo.com/product/r8brain
haali: http://haali.cs.msu.ru/mkv
mkvtoolnix: http://www.bunkus.org/videotools/mkvtoolnix

WARNING:

Nero 8 won't work for eac3to cause Nero 8 doesn't allow its DirectShow filters to be used from outside of Nero ShowTime. So please use/install Nero 7 if you want to use Nero DirectShow filters in eac3to.

background information:

Please note that there are three common problems with "properly" decoding compressed audio tracks. The first problem has to do with that the purpose of a media player is different than the purpose of people like us who want to reencode audio tracks. A media player may want to adjust volume levels to specific parameters and circumstances. We reencoders absolutely want to avoid any processing on the precious audio data. This is a conflict which can not always be solved. The three known problems are:

(1) Some decoders apply DRC (Dynamic Range Compression). Stupidly Dolby's license requests that DRC must be applied, unless your decoder has an option to turn it on/off. Only then the decoder is allowed to not apply DRC. The purpose of DRC is to limit the dynamic range of an audio track, mainly to not annoy neighbours or to accomodate to noisy living room conditions. For our purposes DRC is catastrophic.
(2) Some decoders forcefully downconvert to 16bit, or raise volume for unknown reasons or do other stupid stuff.
(3) Some decoders don't make use of the full available information, but just extract and decode the "core" of the compressed audio data, which obviously results in less than optimal audio quality.

evaluation of available decoders:

The Sonic (E-)AC3 decoder forcefully applies DRC. As a result I do not recommend to use the Sonic (E-)AC3 decoder. The current version of the Sonic TrueHD decoder doesn't work properly at all. The Sonic DTS decoder is very good for DTS, DTS-ES, DTS-96/24, DTS-HD Master Audio and DTS-HD High Resolution tracks. The only problem is that it decodes DTS-HD 7.1 tracks only as 5.1. Most DTS-ES and DTS-HD Master Audio 6.1 tracks are fully decoded as 6.1, though. The Nero (E-)AC3 and Nero TrueHD decoders are working perfectly fine, but are limited to 5.1 channels. The Nero DTS decoder ignores the additional DTS-HD information and only decodes the DTS core. The Cyberlink decoders always only output 16bit and can't be used outside of PowerDVD. So they currently do not make a lot of sense for eac3to. The libav/ffmpeg (E-)AC3 and DTS decoders work really well, but the output is not 100% identical to the Dolby/DTS reference decoders. I'm not sure whether there's a difference in audio quality. Decide for yourself. The libav/ffmpeg (E-)AC3 and DTS decoders are both limited to 5.1. Furthermore the DTS decoder ignores the additional DTS-HD information. The libav/ffmpeg TrueHD decoder works perfectly fine including full 7.1 decoding. The ArcSoft DTS decoder seems to be perfect for DTS and DTS-HD decoding. It supports every format and channel configuration that exists including 6.1 and 7.1. The ArcSoft TrueHD and ArcSoft (E-)AC3 decoders are currently not supported by eac3to.

default decoders used by eac3to:

MP1, MP2, MP3: libav/ffmpg
(E-)AC3: Nero
AAC: Nero
TrueHD: libav/ffmpeg
DTS(-HD): ArcSoft

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