eac3to - audio conversion tool - Page 742

tebasuna51 · 5th May 2019, 03:03

Quote:

Originally Posted by Vicio

Where it recommends using the Megui for this purpose, the doubt is even with the Megui still need to convert the audio to .w64 and do the Sound Forge step to get the RMS value?

MeGUI, or other free software, can't encode to Dolby Digital.
The best AC3 free encoder (ffmpeg) used with MeGUI or BeHappy is not a Dolby Digital encoder.

The recommended Dialog Normalization and Dynamic Range Compression with this encoder is the default (-31 dB and None), then is not necesary know the RMS value of center channel in Sound Forge (or with other method).

Take in mind than you are recoding a previous track, not encoding material recorded by you. Many encoder options in commercial encoders (filters, phase shift, etc.) are now unnecesary.

Vicio · 5th May 2019, 05:15

Quote:

Originally Posted by tebasuna51

MeGUI, or other free software, can't encode to Dolby Digital.
The best AC3 free encoder (ffmpeg) used with MeGUI or BeHappy is not a Dolby Digital encoder.

Yes, I'm aware of this, Megui is just a GUI, I just wanted to ask the question straight to the point without dwelling on technical terms.

Quote:

The recommended Dialog Normalization and Dynamic Range Compression with this encoder is the default (-31 dB and None), then is not necesary know the RMS value of center channel in Sound Forge (or with other method).

Okay, that's what I wanted to hear.

Quote:

Take in mind than you are recoding a previous track, not encoding material recorded by you. Many encoder options in commercial encoders (filters, phase shift, etc.) are now unnecesary.

Understood, noted here.
And thank you very much for the help, I read more half of the pages of this topic and I observed that you are a helpful person.
Greetings from Brazil.

zeropc · 6th May 2019, 02:32

Guys, can eac3to no longer slowdown videos in h265?
I get the following error message

Code:

C:\Users\zeropc>"\\Mac\Home\Desktop\eac3to more gui\eac3to\eac3to.exe" "X:\evil2mkv"
 1: "\\Mac\Home\Desktop\dead2\hdr.h264" 2: "\\Mac\Home\Desktop\dead2\dv.h264" -slowdown
MKV, 2 video tracks, 2 audio tracks, 1 subtitle track, 1:24:32, 24p
1: h265/HEVC, 2160p24 (16:9), 10 bits
2: h265/HEVC, 1080p24 (16:9), 10 bits - Dolby Vision Enhancement Layer
3: DTS Master Audio, English, 1.0 channels, 16 bits, 48kHz
   (core: DTS, 1.0 channels, 768kbps, 48kHz)
4: DTS Master Audio, English, 5.1 channels, 24 bits, 48kHz
   (core: DTS, 5.1 channels, 1509kbps, 48kHz)
5: Subtitle (PGS), English
v01 The video framerate is correct, but rather unusual.
v02 The video framerate is correct, but rather unusual.
This video conversion is not supported.

tebasuna51 · 6th May 2019, 10:41

eac3to can't edit h265 (slowdown), but you want also recode to h264, for that the message is:
"This video conversion is not supported."

zeropc · 6th May 2019, 14:36

Quote:

Originally Posted by tebasuna51

eac3to can't edit h265 (slowdown), but you want also recode to h264, for that the message is:
"This video conversion is not supported."

AHHH!!!

Would be sweet if madshi can add this option for h265

SeeMoreDigital · 6th May 2019, 14:50

Quote:

Originally Posted by tebasuna51

eac3to can't edit h265 (slowdown), but you want also recode to h264, for that the message is:
"This video conversion is not supported."

Out of interest... Has anybody created a tool that can change some of the attributes of h265 elementary streams?

nevcairiel · 6th May 2019, 15:01

Quote:

Originally Posted by SeeMoreDigital

Out of interest... Has anybody created a tool that can change some of the attributes of h265 elementary streams?

Depending on what partciular properties you are talking about, the h265_metadata bitstream filter in ffmpeg can change a bunch of them.

sneaker_ger · 6th May 2019, 15:30

* hevc_metadata

SeeMoreDigital · 6th May 2019, 15:37

Marvellous...

Thank-you Mr sneaker or is it Mr ger

nevcairiel · 6th May 2019, 15:37

How misleading, the file was called h265_metadata_bsf.c

an3k · 16th May 2019, 20:37

I noticed a bug with eac3to v3.34 and Surcode DTS Encoder. When you convert a multichannel AC3 or WAV (for FLAC, etc.) to DTS it works fine. If you however want to convert a singlechannel (1.0 aka. mono) to DTS eac3to - or better Surcode throws an error. The very same file eac3to doesn't handle correctly is perfectly working if used directly inside the Surcode DTS Encoder software.

The error is:

Quote:

C:\Program Files (x86)\MeGUI\tools\eac3to>eac3to.exe "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.wav" "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.dts"
WAV, 1.0 channels, 2:32:13, 24 bits, 1152kbps, 48kHz
Reading WAV...
Writing WAVs...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.C.wav"...
The original audio track has a constant bit depth of 24 bits.
Encoding DTS <768kbps> with Surcode...
Found Surcode DTS Encoder version 1.0.29.0.
Surcode says/asks: "Invalid Wave File D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.dts.".
Surcode says/asks: "At least one valid source file must be specified to encode.".
Pressing the Surcode "Encode" button didn't seem to work...
Closing Surcode...

Somehow eac3to pushes the destination filename to Surcode as the source filename.

Another bug is that if your source file is named eg. "foobar.C.wav" and you want to convert it to AC3 or DTS eac3to wants to convert that file to "foobar.C.wav" to make it compatible with the format AC3 or DTS expects. However, it throws an error because it just overwrote the source audio file with the temporary one

tebasuna51 · 17th May 2019, 00:28

@an3k
Encode a monowav to standard DTS 768 Kb/s with Surcode is usseless, you obtain a file with the same size and less quality than the PCM 16 bits (WAV).

eac3to don't need manage that conversion.

I can't reproduce the name problem encoding to AC3.

an3k · 17th May 2019, 00:48

Quote:

Originally Posted by tebasuna51

@an3k
Encode a monowav to standard DTS 768 Kb/s with Surcode is usseless, you obtain a file with the same size and less quality than the PCM 16 bits (WAV).

eac3to don't need manage that conversion.

I can't reproduce the name problem encoding to AC3.

The sense may be non-existend. I agree with you on that point but non-the-less it is a bug in eac3to.

Using the same file directly in Surcode works (even though the resulting DTS file is 5.1 channels). Because of that I went and created a DTS-HD MA using the DTS Master Audio Suite which created a mono file.

Yeah, if the target is AC3 it works without issues.

an3k · 19th May 2019, 13:54

I noticed another weird behavior and don't know if eac3to is doing something wrong or me not understanding it.

Code:

eac3to v3.34
command line: eac3to.exe  "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.ac3" "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.wavs"
------------------------------------------------------------------------------
AC3, 5.1 channels, 2:32:13, 448kbps, 48kHz
Decoding with libav/ffmpeg...
Reducing depth from 64 to 24 bits...
Writing WAVs...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.L.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.SL.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.C.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.SR.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.LFE.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.R.wav"...
Clipping detected, a 2nd pass will be necessary.  <WARNING>
Starting 2nd pass...
Decoding with libav/ffmpeg...
Reducing depth from 64 to 24 bits...
Writing WAVs...
Applying -0.55dB gain...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.L.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.LFE.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.R.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.C.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.SL.wav"...
Creating file "D:\Encode\Movie (2008)\title_t03_track2_[ger]_DELAY 0ms.SR.wav"...
eac3to processing took 5 minutes, 17 seconds.
Done.

eac3to says

Code:

Reducing depth from 64 to 24 bits...

but MediaInfo says the ac3 is 16 bits. The second audio stream is TrueHD (MediaInfo says it's 16 bits too) and if I transcode that into individual wavs eac3to correctly use 16 bits.

sneaker_ger · 19th May 2019, 15:01

AC3 and other lossy codecs don't have any inherent bitdepth despite what MediaInfo might suggest. The decoder can decode at 64 bits but it would be to wasteful to store 64 bit PCM/WAV so eac3to reduces the depth.

an3k · 19th May 2019, 15:35

Oh, I see. Thank you for the information.

What about Dolby TrueHD? MediaInfo says 24 bits but eac3to says 16 bits and is reducing from 24 to 16 bits.

I want to keep as much quality as possible and the size of the intermediate wav files isn't a thing I have to worry about since I'm going to encode to a different format.

sneaker_ger · 19th May 2019, 15:52

Lossless codecs do have "inherent" bitdepths. In your case it was encoded as 24 bits. But eac3to detects that throughout the complete file all of the respective 8 minor bits are 0s. So it decides to encode to 16 bit instead. This has absolutely no influence on quality.

MeteorRain · 24th May 2019, 17:30

Is there any way to stop eac3to from adding DELAY to output file name?

I'm writing script to batch extract eac3 from files and convert them to wav for further processing.

eac3to x.mkv x.wav tells me This audio conversion is not supported..

eac3to x.mkv x.eac3 then eac3to x.eac3 x.wav works.
However eac3to will add DELAY XYZ ms to the file name so it's kinda hard to script that into a makefile.
Since this delay is usually less than 1 frame, I really don't care if it's applied correctly.

sneaker_ger · 24th May 2019, 22:13

I would recommend using ffmpeg. It seems better at reading from mkv and also has a more feature-complete eac3 decoder IIRC.

Code:

ffmpeg -i "x.mkv" -map 0:a:0 "x.wav"

It can correct delays, too. Hope this is correct:

Code:

ffmpeg -i "x.mkv" -map 0:a:0 -af aresample=first_pts=0 "x.wav"

MeteorRain · 25th May 2019, 06:56

Thanks. I'm aware of ffmpeg but still prefer eac3to if possible.

6th May 2019, 10:41	#14824 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 5,660	eac3to can't edit h265 (slowdown), but you want also recode to h264, for that the message is: "This video conversion is not supported." __________________ BeHappy, AviSynth audio transcoder, in Doom9 forums. NicAudio, BassAudio, audio decoders.

6th May 2019, 15:37	#14829 \| Link
SeeMoreDigital Life looks better in UHD Join Date: Jun 2003 Location: Notts, UK Posts: 11,455	Marvellous... Thank-you Mr sneaker or is it Mr ger __________________ \| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 \| My Network Layout & A/V Gear \|

6th May 2019, 15:37	#14830 \| Link
nevcairiel Registered Developer Join Date: Mar 2010 Location: Hamburg/Germany Posts: 9,833	How misleading, the file was called h265_metadata_bsf.c __________________ LAV Filters - open source ffmpeg based media splitter and decoders

17th May 2019, 00:28	#14832 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 5,660	@an3k Encode a monowav to standard DTS 768 Kb/s with Surcode is usseless, you obtain a file with the same size and less quality than the PCM 16 bits (WAV). eac3to don't need manage that conversion. I can't reproduce the name problem encoding to AC3. __________________ BeHappy, AviSynth audio transcoder, in Doom9 forums. NicAudio, BassAudio, audio decoders.

24th May 2019, 17:30	#14838 \| Link
MeteorRain 結城有紀 Join Date: Dec 2003 Location: NJ; OR; Shanghai Posts: 620	Is there any way to stop eac3to from adding DELAY to output file name? I'm writing script to batch extract eac3 from files and convert them to wav for further processing. eac3to x.mkv x.wav tells me This audio conversion is not supported.. eac3to x.mkv x.eac3 then eac3to x.eac3 x.wav works. However eac3to will add DELAY XYZ ms to the file name so it's kinda hard to script that into a makefile. Since this delay is usually less than 1 frame, I really don't care if it's applied correctly. __________________ x264 Yuuki-mod based on tMod \| x265 Yuuki-Asuna-mod

6th May 2019, 15:30	#14828 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,494	* hevc_metadata

19th May 2019, 15:01	#14835 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,494	AC3 and other lossy codecs don't have any inherent bitdepth despite what MediaInfo might suggest. The decoder can decode at 64 bits but it would be to wasteful to store 64 bit PCM/WAV so eac3to reduces the depth.

19th May 2019, 15:35	#14836 \| Link
an3k Registered User Join Date: Oct 2006 Location: Munich, Germany Posts: 169	Oh, I see. Thank you for the information. What about Dolby TrueHD? MediaInfo says 24 bits but eac3to says 16 bits and is reducing from 24 to 16 bits. I want to keep as much quality as possible and the size of the intermediate wav files isn't a thing I have to worry about since I'm going to encode to a different format.

19th May 2019, 15:52	#14837 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,494	Lossless codecs do have "inherent" bitdepths. In your case it was encoded as 24 bits. But eac3to detects that throughout the complete file all of the respective 8 minor bits are 0s. So it decides to encode to 16 bit instead. This has absolutely no influence on quality.

24th May 2019, 22:13	#14839 \| Link
sneaker_ger Registered User Join Date: Dec 2002 Posts: 5,494	I would recommend using ffmpeg. It seems better at reading from mkv and also has a more feature-complete eac3 decoder IIRC. Code: ffmpeg -i "x.mkv" -map 0:a:0 "x.wav" It can correct delays, too. Hope this is correct: Code: ffmpeg -i "x.mkv" -map 0:a:0 -af aresample=first_pts=0 "x.wav"

25th May 2019, 06:56	#14840 \| Link
MeteorRain 結城有紀 Join Date: Dec 2003 Location: NJ; OR; Shanghai Posts: 620	Thanks. I'm aware of ffmpeg but still prefer eac3to if possible. __________________ x264 Yuuki-mod based on tMod \| x265 Yuuki-Asuna-mod

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