eac3to - audio conversion tool

[filler56789]

Originally Posted by SchnittenGott

eac3to v3.27
command line: eac3to -test
------------------------------------------------------------------------------
eac3to (v3.27) is up to date
ArcSoft DTS Decoder (1.1.0.8) works fine

Is there a new version of ArcSoft DTS Decoder?

Yes, 1.1.0.9

http://forum.doom9.org/showthread.ph...14#post1631214

[maxmercy]

Hey everyone,

Is there a way to adjust individual channel levels in eac3to when changing formats?

I would like to take an HDAudio source and modify the individual channel levels prior to converting to/writing a .w64 file.

Thanks for your help,

JSS

[Mark Regalo]

Is there a list of all the .dlls and .ax files I need and what I need to register for all the decoders/encoders used in eac3to?

[tebasuna51]

Originally Posted by maxmercy

Is there a way to adjust individual channel levels in eac3to when changing formats?

Nope, with eac3to you can only modify all channels with the same value.

[maxmercy]

Thanks for the prompt reply!

JSS

[frencher]

Hello all,

What are all the extensions supported by eac3to ?
I know that one

.h264 .vc1 .ac3 .eac3 .thd .thd+ac3 .dts .dtshd .wav .wavs .sup .srt .txt

Y there a list of all those used by eac3to for demux ?

[tebasuna51]

eac3to can output:

Video: .h264 .vc1 .m2v (all can be muxed to .mkv with Haali)
Uncompressed audio (extract or decode): .wav (.wavs) .w64 .rf64 .pcm .raw
Compressed audio (extract or encode): .ac3 .flac .dts (encode with SurCode) .m4a (aac audio in mp4 container encoded with NeroAacEnc)
Other compressed audio (only extract): .eac3 .thd (.thd+ac3) .dtshd .aac .mp2 .mp3
Subtitles: .sup .srt .ass .ssa
Chapters: .txt

[frencher]

Already thank you very much for the reply
By cons I think it is missing, I just found one. Mpeg2 and it seems there are other ...
Madshi, could you provide a list of standard format demux function in eac3to -help

[tebasuna51]

Originally Posted by frencher

By cons I think it is missing, I just found one. Mpeg2 and it seems there are other ...

What?

MPEG2 video -> .m2v
MPEG2 audio -> .mp2 .mp3 (maybe .mp1 but I don't found any sample to test)

[frencher]

Thanks tebasuna51,

It's strange, works same

MPEG2 video -> .m2v and .mpeg2

Why ?

What's missing here and what's wrong here for extract only ? ( -demux)

Keyword             eac3to demux .extension

** VC-1             = .vc1
** h264/AVC         = .h264
** MPEG2            = .m2v works with .mpeg2
** AC3              = .ac3
** E-AC3            = .eac3
** AC3 Surround     = .ac3
** TrueHD           = .thd
** TrueHD/AC3       = .thd+ac3
** DTS              = .dts
** DTS Master Audio = .dtsma
** DTS Hi-Res       = .dtshr
** DTS-HD (no core) = .dtsnc
** DTS Express      = .dtslbr
** FLAC             = .flac
** RAW/PCM          = .pcm
** MLP              = .mlp
** WAV              = .wav
** W64              = .w64
** RF64             = .rf64
** DTSWAV           = .dtswav
** AC3WAV           = .ac3wav
** AAC              = .aac
** MP1              = .mp1
** MP2              = .mp2
** MP3              = .mp3
** (PGS)            = .sup
** (DVD)            = .sup
** (SRT)            = .srt
** (ASS)            = .ass
** (SSA)            = .ssa
** (VobSub)         = ?

[LigH]

Depending on your purpose, you may want to support '.wavs' too (demultiplexes/decodes and de-interleaves a multi-channel audio stream to separate mono .wav files per audio channel).

VobSub consists of .sub (RLE-encoded DVD subpicture stream) + .idx (timecode and stream information text file).

[tebasuna51]

Originally Posted by frencher

It's strange, works same

MPEG2 video -> .m2v and .mpeg2

Why ?

Because the extension is not mandatory for some formats.
The format of the file is defined in the file header.

For instance you can use .dts for all of this:

** DTS              = .dts
** DTS Master Audio = .dts
** DTS Hi-Res       = .dts
** DTS Express      = .dts

The use of other extension is optional and only to remind you the internal format, but there are soft than only accept .dts

To extract the core of a dtshd you need add the -core parameter, if you put only the extension .dts, without -core, you obtain a dtshd.

BTW, DTS-HD (no core) don't exist, a dtshd must have always a core.

- .pcm and .raw have the same audio data but with different byte and channel order. A .raw is exact to a .wav/.w64/.rf64 without header.

- Graphic subtitles.
Only (PGS) = .sup is usefull

With (DVD), subs from VOB container, the .sup extracted is not supported by mkvmerge to mux or subrip/suprip/subtitleedit to convert to text subtitles.
If you want convert to text subs better use subrip/subtitleedit directly from VOB files.
BTW the .sup extracted by eac3to (or PgcDemux) can be used, with the .IFO file from DVD structure, by BDsup2sub to obtain the graphic subtitles sub/idx accepted by MkvMerge. But there are other tools to extract sub/idx directly from VOB's

The (VobSub), subs sub/idx in mkv container, aren't supported by eac3to to extract. Use MkvExtract instead.

EDIT:

** DTSWAV           = .dtswav
** AC3WAV           = .ac3wav

Aren't supported like output by eac3to.
Some times (not always) are supported like input to extract the .dts/.ac3 included in the fake wav container.

[filler56789]

Originally Posted by tebasuna51

...

BTW, DTS-HD (no core) don't exist, a dtshd must have always a core.

...

Only if one wants/needs compliance with the Blu-Ray specifications. In the so-called "Digital Delivery" mode, the Master Audio Encoder Suite can output a pure lossless stream, but only for certain channel layouts (2.0, 5.1 and 7.1).

[nevcairiel]

Even on Blu-ray you have DTS-HD streams without core, the so called DTS Express uses a low-bitrate HD stream without core to be able to produce a VBR stream with low bitrate for mostly voice (commentary tracks)

[frencher]

OK Thank's all
If update or error(s) send me update

## Video
** VC-1                = .vc1
** h264/AVC            = .h264
** MPEG1               = .mpeg1
** MPEG2               = .m2v
** MS/VFW/FOURCC/XVID  = .xvid
## Audio
** AC3                 = .ac3
** E-AC3               = .eac3
** AC3 Surround        = .ac3
** TrueHD              = .thd
** TrueHD/AC3          = .thd+ac3
** DTS                 = .dts
** DTS Master Audio    = .dts
** DTS Hi-Res          = .dts
** DTS-HD (no core)    = .dts
** DTS Express         = .dts
** FLAC                = .flac
** RAW/PCM             = .pcm
** MLP                 = .mlp
** WAV                 = .wav
** W64                 = .w64
** RF64                = .rf64
** DTSWAV              = .dtswav
** AC3WAV              = .ac3wav
** AAC                 = .aac
** MP1                 = .mp1
** MP2                 = .mp2
** MP3                 = .mp3
## Subtitles
** (PGS)               = .sup
** (DVD)               = .sup
** (SRT)               = .srt
** (ASS)               = .ass
** (SSA)               = .ssa
** (VobSub)            = .sup

[tebasuna51]

Originally Posted by filler56789

Only if one wants/needs compliance with the Blu-Ray specifications. In the so-called "Digital Delivery" mode, the Master Audio Encoder Suite can output a pure lossless stream, but only for certain channel layouts (2.0, 5.1 and 7.1).

Like I never see this kind of files please confirm:
- If this stream can be muxed in any container and extracted by eac3to.
- If eac3to can decode this stream.

Originally Posted by nevcairiel

Even on Blu-ray you have DTS-HD streams without core, the so called DTS Express uses a low-bitrate HD stream without core to be able to produce a VBR stream with low bitrate for mostly voice (commentary tracks)

OK, if we can call DTS Express like DTS High Definition.
BTW, DTS Express was already listed.

Originally Posted by frencher

OK Thank's all
If update or error(s) send me update

** MPEG1 = .mpeg1
I don't know, never tested.

** MS/VFW/FOURCC/XVID =
eac3to can't open avi container and can't extract this stream if present in mkv container.

** AC3 Surround = .ac3
Is a particular case of standard AC3, if you list this item separately seems you suggest than eac3to can apply a DPL decoder and is not true.

** DTS-HD (no core) = .dts
I don't know, never tested.

** RAW/PCM = .pcm/.raw
Both formats useless, must be extracted like .wav/.w64/.rf64

** DTSWAV = .dts
eac3to can't output .dtswav, only can convert DTSWAV to .dts

** AC3WAV = .ac3
eac3to can't output .ac3wav, only can convert AC3WAV to .ac3

** MP1 = .mp1
I don't know, never tested.

** (VobSub) =
eac3to can't extract this kind of sub.

[filler56789]

Originally Posted by tebasuna51

Like I never see this kind of files please confirm:
- If this stream can be muxed in any container and extracted by eac3to.

No.

- If eac3to can decode this stream.

No, and I serious doubt any DirectShow decoder available a.t.m. can do that as well.

BTW, neither mkvmerge nor LAV Splitter support A_DTS/LOSSLESS thus far.

Besides,

http://matroska.org/technical/specs/codecid/index.html says:

Please, when reading through this list, always keep in mind that the intention behind it is NOT to list all existing audio and video codecs, but more to list those codecs that are currently supported in matroska (or will be supported soon),

so the problem of course, is what they mean by "soon"

http://lists.matroska.org/pipermail/...ne/004051.html

[IanD]

I recently tried converting an HD-DVD with TrueHD audio to Bluray format using first ClownBD 0.81 and then eac3to 3.27, but each software insists on decoding and re-encoding the AC3 core of the TrueHD track.

Does anyone know why this might be occurring and how to stop it happening?

[DarkSpace]

Originally Posted by IanD

I recently tried converting an HD-DVD with TrueHD audio to Bluray format using first ClownBD 0.81 and then eac3to 3.27, but each software insists on decoding and re-encoding the AC3 core of the TrueHD track.

Does anyone know why this might be occurring and how to stop it happening?

From what I remember, TrueHD tracks on HD-DVD don't have an AC3 core, so eac3to will have to generate one from the decoded TrueHD track for the BluRay version. There is no "re-encoding" of the AC3 core, eac3to is just generating data that wasn't there previously.

[IanD]

Originally Posted by DarkSpace

From what I remember, TrueHD tracks on HD-DVD don't have an AC3 core, so eac3to will have to generate one from the decoded TrueHD track for the BluRay version. There is no "re-encoding" of the AC3 core, eac3to is just generating data that wasn't there previously.

Thanks for the clarification: I didn't realise that was the case.

A number of HD-DVD have better video and/or audio than the equivalent Bluray, still, and since I no longer have an HD-DVD player it's good to be able to get them into a playable format again.