eac3to - audio conversion tool - Page 481

samepaul · 2nd December 2009, 10:33

I think I found bug.

Code:

eac3to 00001.m2ts 1: chapters.txt 3: audio1.m4a -no2ndpass 6: audio2.m4a -quality=0.6 -no2ndpass 9: english.sup

It starts, spawns 2 nero encoders, processes whole input and then one Nero finishes, but 2nd does not and stays idle. I mean really idle - 0% CPU and no byte read or written.
As result 1st m4a file is ok and 2nd is unreadable, although is not empty.
No problem occurs if only one track is recoded at a time.

Foofaraw · 7th December 2009, 16:09

So, any plans to support wmv/a? I need to get some wma10 out of a wmv and down to something sensible, like say ac3

tebasuna51 · 8th December 2009, 03:04

To convert wma audio, in wmv container, to ac3 you can try several methods:
- Foobar and Aften
- dshow2wav and pipe the output to Aften.
- AviSynth methods (Soundout, BeHappy, bepipe, wavi) with DirectshowSource decoder.

For more detailed explanation please open a new thread.

b66pak · 8th December 2009, 20:10

off topic

@tebasuna51 it is not so simple...most of the time you will get an audio oos...
_

Midzuki · 9th December 2009, 01:22

b66pak wrote:

Quote:

off topic

it is not so simple...most of the time you will get an audio oos...

That's true. To whom this may interest, here goes my "method":

1) copy the Windows Media Audio stream to a standalone ASF file (*.wma) with AsfBin ;

2a) convert to a .WAV file via Avisynth + BassAudioSource() ;

2b) OR... playback the intermediate WMA file with Winamp's Disk Writer plugin.

So far, it's worked fine for stereo Windows Media Audio,
I still haven't found problematic multichannel WMAs on which I should test this workaround.

hoju3508 · 9th December 2009, 09:51

Is there a way to preserve the HD audio when slowing it from 25fps to 23.976fps? Once it's slowed down through eac3to, the HD streams are gone. It only uses the core of the track.

tebasuna51 · 9th December 2009, 11:31

Use flac output, is also lossless, or buy a TrueHD/DTS-HD encoder. But change the samplerate isn't a lossless operation.

Mark_A_W · 9th December 2009, 12:36

I would use FLAC, but leave the file alone and change the speed on the during playback with Reclock.

You don't lose anything permanently that way.

hoju3508 · 9th December 2009, 21:16

Thanks for the feedback.

Quote:

Originally Posted by tebasuna51

Use flac output, is also lossless, or buy a TrueHD/DTS-HD encoder. But change the samplerate isn't a lossless operation.

Quote:

Originally Posted by Mark_A_W

I would use FLAC, but leave the file alone and change the speed on the during playback with Reclock.

You don't lose anything permanently that way.

sucker · 11th December 2009, 02:26

suppose i have a 1h30min track and i want to cut it, so that i only have a 1h25min track, what would be the commandline to achieve this?

tia

jmone · 13th December 2009, 02:05

Given we are seeing advances in Filters supporting HD codec playback (eg FFDSHOW can now decode most and is working at bitstreaming)....is it worth transcoding the Audio or just Remux the Original Audio when using MKV containers?

jmone · 13th December 2009, 08:31

wrong thread - sorry

Blue_MiSfit · 13th December 2009, 10:19

IMO, most stuff can safely be transcoded to AAC with perfect transparency. I do this most of the time.

If AC3 is the best quality audio source on a given movie, then I just keep it. Why reinvent the wheel?

If a movie has an incredibly good audio track, or is a musical performance, then I either keep it as-is (if it's TrueHD), or just transcode to FLAC.

Of course, I don't have a fancy receiver, or even a 5.1ch system, so I don't mind terribly

Headphones suit me just fine!

~MiSfit

MrVideo · 14th December 2009, 08:06

There is a situation, which I've hit a few times, that causes eac3to to hang in a loop of some sort, forever.

It hits a bad section of the video, and if it is bad enough, it will not get through it, nor will it error out. This is what is on the screen when it happens:

Code:

a03 0:43:17 The source file seems to be damaged (transport error indicated).
v01 0:43:17 The source file seems to be damaged (transport error indicated).
a05 0:43:17 The source file seems to be damaged (transport error indicated).
a04 0:43:17 The source file seems to be damaged (transport error indicated).
a03 0:43:17 The source file seems to be damaged (discontinuity).
v01 0:43:17 The source file seems to be damaged (discontinuity).
a05 0:43:17 The source file seems to be damaged (discontinuity).
a04 0:43:17 The source file seems to be damaged (discontinuity).
a03 0:43:17 The source file seems to be damaged (discontinuity).
v01 0:43:17 The source file seems to be damaged (discontinuity).
a05 0:43:17 The source file seems to be damaged (discontinuity).
a04 0:43:17 The source file seems to be damaged (discontinuity).
v01 0:43:17 The source file seems to be damaged (discontinuity).
a05 This track is not clean.
a03 This track is not clean.
a04 This track is not clean.

I run via the command line (Zshell script within cygwin).

An update: I was able to take what was completed and finish the job. I then looked at the output and the real nasty damage is at 58:00 minutes. There was no error output placed onto the screen, eac3to just went into a loop and hung at that point in the file.

Carpo · 16th December 2009, 17:36

I have a little issue whereby the encode i have done is just a little bit (i would say 100meg or so) big to fit on a dvd9 disc, i know i could use 2 dvd5s but was thinking it would be easier to just drop the rate of the ac3, i have the ac3 on the drive (used tsmuxer to remove true-hd part) so its sitting as a 640kbps ac3 file.

To use eac3to i would just do

eac3to gran.torino.640.ac3 gran.torino.448.ac3 -448

is that correct? or would people suggest i copy the true-hd file from the bluray disc and use ac3 to do the lot manually skipping tsmuxer down converting to ac3?

Snowknight26 · 16th December 2009, 18:12

To get the best quality, use the TrueHD track and go straight to the 448kbps AC3.

Carpo · 16th December 2009, 18:35

Thought as much, so its just the line above i need? or do i need to add the frame rate as well?

Does this program still require external decoders to do its thing or is it all done by eac3to?

Snowknight26 · 16th December 2009, 22:19

The line above would work. For TrueHD, replace the source file name with the TrueHD track. You don't have to worry about any kind of 'rates' unless you're changing the video.
eac3to can decode TrueHD and it can encode AC3 without any additional extras.

Carpo · 16th December 2009, 22:36

thanks

- i have to change the rate on the ac3 otherwise i cant get the backup i made to fit on a dvd9 - its slightly oversized, if i drop the rate from 640 to 448 it should fit nicely

Snowknight26 · 16th December 2009, 22:58

Bitrate, not rate.

2nd December 2009, 10:33	#9601 \| Link
samepaul Registered User Join Date: May 2004 Posts: 25	I think I found bug. Code: eac3to 00001.m2ts 1: chapters.txt 3: audio1.m4a -no2ndpass 6: audio2.m4a -quality=0.6 -no2ndpass 9: english.sup It starts, spawns 2 nero encoders, processes whole input and then one Nero finishes, but 2nd does not and stays idle. I mean really idle - 0% CPU and no byte read or written. As result 1st m4a file is ok and 2nd is unreadable, although is not empty. No problem occurs if only one track is recoded at a time. __________________

8th December 2009, 03:04	#9603 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	To convert wma audio, in wmv container, to ac3 you can try several methods: - Foobar and Aften - dshow2wav and pipe the output to Aften. - AviSynth methods (Soundout, BeHappy, bepipe, wavi) with DirectshowSource decoder. For more detailed explanation please open a new thread. __________________ BeHappy, AviSynth audio transcoder.

9th December 2009, 11:31	#9607 \| Link
tebasuna51 Moderator Join Date: Feb 2005 Location: Spain Posts: 6,915	Use flac output, is also lossless, or buy a TrueHD/DTS-HD encoder. But change the samplerate isn't a lossless operation. __________________ BeHappy, AviSynth audio transcoder.

13th December 2009, 02:05	#9611 \| Link
jmone Registered User Join Date: Dec 2007 Posts: 652	Given we are seeing advances in Filters supporting HD codec playback (eg FFDSHOW can now decode most and is working at bitstreaming)....is it worth transcoding the Audio or just Remux the Original Audio when using MKV containers? Last edited by jmone; 13th December 2009 at 02:22.

13th December 2009, 08:31	#9612 \| Link
jmone Registered User Join Date: Dec 2007 Posts: 652	wrong thread - sorry Last edited by jmone; 13th December 2009 at 08:36.

7th December 2009, 16:09	#9602 \| Link
Foofaraw Registered User Join Date: Apr 2004 Posts: 126	So, any plans to support wmv/a? I need to get some wma10 out of a wmv and down to something sensible, like say ac3

8th December 2009, 20:10	#9604 \| Link
b66pak Registered User Join Date: Aug 2008 Location: The Land Of Dracula (Romania - EU) Posts: 934	off topic @tebasuna51 it is not so simple...most of the time you will get an audio oos... _

9th December 2009, 09:51	#9606 \| Link
hoju3508 Registered User Join Date: Nov 2007 Location: Austin, TX Posts: 197	Is there a way to preserve the HD audio when slowing it from 25fps to 23.976fps? Once it's slowed down through eac3to, the HD streams are gone. It only uses the core of the track.

9th December 2009, 12:36	#9608 \| Link
Mark_A_W 3 eyed CRT supporter Join Date: Jan 2008 Location: Or-strayl-ya Posts: 563	I would use FLAC, but leave the file alone and change the speed on the during playback with Reclock. You don't lose anything permanently that way.

11th December 2009, 02:26	#9610 \| Link
sucker Registered User Join Date: Mar 2009 Posts: 25	suppose i have a 1h30min track and i want to cut it, so that i only have a 1h25min track, what would be the commandline to achieve this? tia

13th December 2009, 10:19	#9613 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	IMO, most stuff can safely be transcoded to AAC with perfect transparency. I do this most of the time. If AC3 is the best quality audio source on a given movie, then I just keep it. Why reinvent the wheel? If a movie has an incredibly good audio track, or is a musical performance, then I either keep it as-is (if it's TrueHD), or just transcode to FLAC. Of course, I don't have a fancy receiver, or even a 5.1ch system, so I don't mind terribly Headphones suit me just fine! ~MiSfit __________________ These are all my personal statements, not those of my employer :)

16th December 2009, 17:36	#9615 \| Link
Carpo Registered User Join Date: Dec 2002 Location: /dev/null Posts: 1,368	I have a little issue whereby the encode i have done is just a little bit (i would say 100meg or so) big to fit on a dvd9 disc, i know i could use 2 dvd5s but was thinking it would be easier to just drop the rate of the ac3, i have the ac3 on the drive (used tsmuxer to remove true-hd part) so its sitting as a 640kbps ac3 file. To use eac3to i would just do eac3to gran.torino.640.ac3 gran.torino.448.ac3 -448 is that correct? or would people suggest i copy the true-hd file from the bluray disc and use ac3 to do the lot manually skipping tsmuxer down converting to ac3? __________________ The Internet: where men are men, women are men, and children are FBI Agents

16th December 2009, 18:12	#9616 \| Link
Snowknight26 Registered User Join Date: Aug 2007 Posts: 1,430	To get the best quality, use the TrueHD track and go straight to the 448kbps AC3.

16th December 2009, 18:35	#9617 \| Link
Carpo Registered User Join Date: Dec 2002 Location: /dev/null Posts: 1,368	Thought as much, so its just the line above i need? or do i need to add the frame rate as well? Does this program still require external decoders to do its thing or is it all done by eac3to? __________________ The Internet: where men are men, women are men, and children are FBI Agents Last edited by Carpo; 16th December 2009 at 21:04.

16th December 2009, 22:19	#9618 \| Link
Snowknight26 Registered User Join Date: Aug 2007 Posts: 1,430	The line above would work. For TrueHD, replace the source file name with the TrueHD track. You don't have to worry about any kind of 'rates' unless you're changing the video. eac3to can decode TrueHD and it can encode AC3 without any additional extras. Last edited by Snowknight26; 16th December 2009 at 22:58.

16th December 2009, 22:36	#9619 \| Link
Carpo Registered User Join Date: Dec 2002 Location: /dev/null Posts: 1,368	thanks - i have to change the rate on the ac3 otherwise i cant get the backup i made to fit on a dvd9 - its slightly oversized, if i drop the rate from 640 to 448 it should fit nicely __________________ The Internet: where men are men, women are men, and children are FBI Agents

16th December 2009, 22:58	#9620 \| Link
Snowknight26 Registered User Join Date: Aug 2007 Posts: 1,430	Bitrate, not rate.