DTS to AC3 5.1

[tbean]

I successfully converted a DTS audio track into 6 WAV files using eac3to as in the link poisondeathray posted.

How do I convert the 6 WAV files into an AC3 audio track?

Thanks,
Tom

[poisondeathray]

I successfully converted a DTS audio track into 6 WAV files using eac3to as in the link poisondeathray posted.

How do I convert the 6 WAV files into an AC3 audio track?

Thanks,
Tom

There is no need to generate 6 mono wavs, that's only for input into surcode for dts creation (those screenshots were for the other thread topic, how to generate mono wavs) ; just select AC3 as output save as type, instead of "wavs"

You can go straight from 5.1 DTS to 5.1 AC3 with eac3to either command line or with the GUI. Command line is actually very easy e.g. if you wanted 384kbps:

eac3to input.dts output.ac3 -384

[tbean]

When I use eac3togui or the command line you provided, I get the following:

"DTS-96/24, 5.1 channels, 2:04:18, 24 bits, 1510kbps, 96khz
Decoding with ArcSoft DTS Decoder...
Encoding AC3 <384kbps> with libAften...
invalid sample rate
Initialization of the AC3 encoder failed.
Aborted at file position 262144."

It looks like eac3to doesn't like the bit rate of the DTS file which is why I separated it into 6 WAVs.

Do you have any other suggestions about what I can try?

[poisondeathray]

eac3to -input.dts -output.ac3 -resampleTo48000 -down16 -640

Basically you need to downconvert the audio to 16bit and 48000khz to be "legal" for AC3. Change the bitrate if you want to whatever instead of 640

[tbean]

Thanks poisondeathray, the command line worked like a charm.

I normally use eac3togui and had no idea how to overcome the error with it. After looking at your command line, I assume I could have selected 16 in the "Downconvert To (14-23 Bit)" control and 48000 in the "Resample Audio To..." control and have gotten a successful conversion. Is that correct?

[poisondeathray]

I normally use eac3togui and had no idea how to overcome the error with it. After looking at your command line, I assume I could have selected 16 in the "Downconvert To (14-23 Bit)" control and 48000 in the "Resample Audio To..." control and have gotten a successful conversion. Is that correct?

I think that's what you would do in the GUI. Note the GUI hasn't been maintained in a while and isn't offically supported so it might not work properly. I'm not a big command line fan, but for simple conversions I prefer using it

[tbean]

Once again, thanks.

[Delta2]

I wonder

Is there any tool that automatically extracts DTS track from an MKV, convert it to AC3 5.1, give it some normalization or something like that, remux all back together to a new MKV ?

I'm not asking for eac3to or similar, but something simplest, basic and easy to use

I can do that easy GUI for soopafresh scripts, if there is any interest, no big deal, just for help

[Uri_Margalit]

Popcorn MKV

http://www.networkedmediatank.com/showthread.php?tid=20887

Works great for me. Converts DTS to AC3

[neosmokes]

Hi!

I have few large AVI files with AVC Video and DTS Audio. They play back n forth for some reason and it has another audio track which is creating mess when played. No matter what channel u select both are audible, so I converted them to MKV removing the other audio track and converting DTS to AC3.

I would like to know which one is better DTS 6.1 or AC3 5.1 Shall I leave the audio as DTS 6.1

I use only PC to watch movies

Greets

[t0nee1]

Do you have a surround sound PC system? Are you planning on viewing and playing through an Audio Receiver in surround sound? If your answer is no to both, then (IMO) use AC3 2-ch stereo...

[walnoot]

Guys, if you wanna convert DTS-audio to AC3-5.1 or just into AC3 2-ch stereo, use only ConvertXToDVD 3. It is simple, quickly and gives finally a perfect result.

[zoroaster]

for MKV files that contain DTS audio I use MKVtoVOB. I transcode the DTS to AC3 448K and I am given the option to transcode the video, but I deselect it. just choose your output file format and you're set to go. works well for Western Digital TV players.

[pmshah]

Like everyone else I have a problem with playing mkv files on a DVD player. May be like most and not everyone. So I downsize the files to acceptable resolution and container which for most is 720 x 480 or whatever. For this Iuse avu demux directly which does an excellent job. Unfortunately it can't handle or does not handle DTS audio very well. So I take different route.

Using MKVextractGui I extract the dts audio, generally 5.1. Using Tranzgui I convert this to 6 separate wav files. My experience is that from a 1 gb DTS file I would get 6 x 1 gb wav files, one for each individual track. Now each wav file is properly identified so you should not have a problem while encoding them back with the video stream into an mp4/avi or whatever is supported by your encoder.

Using EnvWAVtoAC3 I mux these 6 wav files into a single 5.1 ac3 file. This will generally be approximately the same size as the original dts file. Be sure to select proper bit rate while doing this.

I select this ac3 file in Avidemux as the external ac3 while encoding. This entire process of extracting and twice converting may take up to 20-30 minutes but is well worth the effort.

The full details are also available at http://www.schudy.de/dts/dts2ac3-e.htm

BTW all the software referred to are Freeware.

[carlmart]

Just curious. Why don't you use "EAC3to and more GUI" to convert the DTS to AC3?

It's simpler and it does seem to keep the high quality, as long as you choose 640 Kb encoding. Even down to 384 things sound great on my 5.1 setup. Converting them allows me to fit 9Gb mkv files with DTS audio in DVD DL discs.

Your way should be interesting on some cases where level seems to be low, where I use avisynth to increase them a bit but I am not sure if it's clipping or not.

[pmshah]

I come across very few mkv files incorporating DTS audio. So I don't mind using my method when I need to. I tried to use EAC3toGui but was uncomfortable and overwhelmed by the number of available conversions and am quite reluctant to try out/experiment with new stuff. Not at my age anyways. I am a senior citizen!

In Avidemux I choose AC3 (aften - 384 kbps) for converting the sound and I do have the option of both - dynamic compression of range + adjusting the volume levels. I decide after I have watched different segments of the mkv file.

Almost all the 720p and 1080p rips tend to overwhelm the PCs of people I share it with. In most cases where these play without dropping frames you can hardly do anything in the background , even something like downloading a torrent or http downloads which constantly need to write to the hard disk.

[carlmart]

I am 62, so I am not exactly a young fellow! Being senior not an excuse, not an excuse...

This is the version I am using:

http://www.mediafire.com/?sharekey=483e9d29164ef2f3d5a101cf914073b417c134476594f301

There's a short tutorial specific on DTS to AC3 conversions on EAC3toGUI, and in only involves 5 steps. You only set what compression level you want, and I always pick 640K if I can.

[pmshah]

I am single, working part time and have my plate full for learning new stuff. Especiaslly with Win 7 scripting being so much different from XP. I don't like it when the OS will not do exactly what I want it to. I use 4NT for all my command line scripting automation. Am quite occupied with learning to re-author the Win 7 installation DVD to a unattended version with exactly the software I want.

Being a senior citizen is not an excuse but the old spaghetti is beginning to develop bad sectors. So I follow the Unix motto - "Don't fix it if it is not broken".

BTW I have downloaded the 2 links you provided. Thanks. Will certainly give it a go.

[pmshah]

Hi Carlmart!

The links you provide led me to GUI version 0.9.1 Beta which has a jillion tabs and NO Help files. Pretty confusing. The site where I found the tutorial uses tSmuxer in stead of mkvextractgui. Which seems to be able to handle more formats than mkvextract. I will give this new combo a serious try.

Here is the link ....

http://www.blurayjedi.com/node/56

I then did some more googling and came across another one which led me to eac3togui version2.0. Now that was much better. Only a single page and easily selectable options.

Following is the link from where I downloaded it.

http://madshi.net/EAC3toGUI.zip

What it saves me is the intermediate stage of creating the wav files. This would be most useful if I was running out of space. If the mkv was a dvd9 size the dts can be anywhere up to 2 gb over larger and wav files would require anywhere up to 12 additional gb or more.

[xtrattitude4u]

Your methood is graet and work but not compleatly
My DTS file is 791MB , 2:33:11 long but the AC3 output is only 62MB and 18:54 long
I did evrything that you told me is there anything else?

I have this same problem. I have a 1.6GB DTS file and it won't convert but the first 34 minutes of it.

[Genaugmen]

Easiest method I've found (and I've tried a lot). This will map channels properly and only involves 1-2 steps. For DTS use MeGUI. Drop audio in input box (lower half of the screen). Encoder settings > aften scratchpad. Hit configure. Settings are self explanatory if you've converted any audio before. When finish with those settings, press the enqueue button and switch to the queue tab and hit start. Got your ac3 track with channels mapped correctly.

For all other formats, use GraphEdit. You need ffdshow filter installed. Drop your whole video file on graphedit. Click on all boxes and hit delete (except for the first box. This is your input file alone). Hit graph > insert filters > Direct Show filters > (double click) ffdshow audio decoder. Scroll down on same menu and (double click) file writer. Choose folder and file name for your output file. Make sure to put the .ac3 on the end. If you forget to do this it will still work, but your file will have no extension. Just add the .ac3, you don't have to re-encode. make sure file writer options are selected when you install ffdshow. Really you might as well select all three of those extras when installing.

Back to outputting this ac3, close the filter selection box after you've got the audio decoder, and file writer. Drag a line from the audio output of the first box

(your input file, and if it's an audio rather than video file, you'll only have 1 output nub),

to the input on the ffdshow audio decoder box. Right click and hit properties. You've got really 3 sections that matter the most 99% of the time.

Resampling: which can be set to resample if below 48khz.

Mixer: stereo (2/0/0) or 5.1, (3/0/2 & LFE checked).

Output: check these 1-16 bit, 2-ac3, 3-allow direct to file output. Also select your bit-rate up by ac3 check box. I use 256 for stereo and 448 for 5.1. (You need 448 for 5.1 for DVD compliant stream). And the connect to: select any filter.

Last step, drag a line from the output box to the input of file writer box. Hit the green play button in the toolbar. When it turns green again, your file is done. Changes made in the ffdshow filter properties hold, so next time you use the only thing you might need to adjust is if you're encoding stereo or 5.1. Make sure to uncheck LFE when encoding stereo or you'll get a 2.1 ac3 track (unless you want that). Another quick adjustment that can be made on the fly is to increase/decrease volume. In ffdshow properties, check volume. You can adjust master, seperate channels, or normalize.

These solutions not only work very well, but are also fast. 3-4 mins. with MeGUI. Maybe 2-3 more if you change bit-rate as there is a couple of mins. preprocessing before encode starts. 3-6 mins. with graphedit. 5.1 takes a little longer than stereo. You can find some helpful tutorials here at videohelp on these 2 programs if you need more clarification. Also, if you run into any problems with encodes with graphedit, try a different version of ffdshow. some versions work better than others.

note: MeGUI won't work with aac. Also audio must be demuxed to use MeGui. GraphEdit won't work with DTS. The only reason I don't use just graphedit exclusively.

[xtrattitude4u]

Yes, I have found that MeGUI is a great alternative. Although I didn't get as deep into the settings as you, It always works for me if I set the bitrate to 640. the only other issue I have is playing HD divx encoded AVI files on the Xbox 360. It skips every few minutes and it is apparently Ac3 related. Nobody has found a solution from what I can tell.

[dane29]

Hi guys!

I am new here.
I have been using EZmkvDTStoAC3v1.2, for some time. It is a very good app.
Just wanted to let you know, for another good app.

http://www.avi2iso.com/forum/index.php/topic,956.0.html

[pmshah]

I have been using a utility called mkv2ac3 version 1.02.02 for a while and have never had any problems with it.

I usually find DTS audio in mkv files. These unnecessarily take too much extra space. In most cases the audio quality does not suffer if you maintain at least 48 kb rate per channel. Set higher for better quality sound. My usual is 384 kb for 5.1 audio.

BTW all the stand alone dvd players sold here in India DO support Dolby (AC3) and DTS.

[Devlin85]

That worked great! I always use eac3to to do all of my converting but it was returning an error and would fail to process, this worked great!

I updated the files and included a 384kbit, 448kbit, and 640kbit conversion.

I use 640kbit for pretty much everything.. If you making a 4 GB video might as well have the highest audio to go along with it :P

Enjoy!!

[carlmart]

Have you tried Avisynth to make the DTS to AC3 conversion? It's what I always use now.

Script is like this:

nicdtssource("i:\file.dts")

#amplifydb(10)

soundout

You load it on AvsP, press F5 and make your picks. You increase levels too, if you want.

[Matryx]

Is it possible to convert the DTS to AC3 5.1 and mux both audio sources with the video file?

[Jo The Veteran]

Any way to fix some bad queuing in audio channels that occurred from me using DKAudio v.0.1.9 beta for DTS to AC3?
By the time I noticed that the speech channel was coming from the front speaker the original DTS file was gone. So now I just have to put the channels in the right way, only... 2 questions. Which is the right way? (How does DKAudio sorts each channel). And how to do that?
I guess I could try using DTS2WAV2AC3 "tranzcode input.ac3 /mch", I don't know if that'll work thought, it's supposed to do DTS2WAV, don't know if it'd work in AC3. But in case it does work, I'd have a wrong queued multichannel wav, anything I can do with that next?
Or is there a way to correct this whole mess directly from the ac3?
Anyone?

Ok I've just noticed the command option in Eac3to "-0,1,2,3,4,5 (remap the channels...)", so I bet I could use that to fix the messed up AC3s if I were to use something like the sequence "eac3to.exe file.ac3 file.ac3 -384 -1,2,3,0,4,5?!?" or something like that? Am I correct?
Only I still don't know how the DKAudio ordered the channels in the first place. I know the speech comes from the front speakers, so that's channel 0-1? 2-3? 3-4?
Anyone on that?

[maicololiveira]

Here a complete and simple guide for convert your dts to ac3, working 100% fine: http://bit.ly/mkv2ac3

[pmshah]

Just came across yet another freeware software which does an excellent job. It will also handle AAC audio. It even managed some really troublesome DTS files where all else failed.

http://www.spgsoft.com/

The audio converter has very simple interface. Just add the mkv file. Select the output format and quality. I choose AC3 and VeryHigh in quality. Select the output folder. And click on convert. In a very short time you will have the 512 kbps AC3 file for just the audio portion of the mkv compilation. You can then simply mux it into the original mkv file using mmg.exe in mkvtoolnix pack. The whole process takes no more than say 10 minutes max.

Only thing this software suffers from is that there is no provision for increasing the volume level. I guess this is the problem with aften codec. You have to use whatever means at your disposal to achieve that part.