AC3->MP3 without intermediate files?

Boost · 14th October 2001, 14:16

Hi!

I'm used to the Linux way of doing things. But is there a way of converting AC3 directly to MP3? Is piping really supported under Windows 2000? I mean I would like to do something like:
azid movie.ac3 - | lame - out.mp3

Is this possible or is it on it's way?

LigH · 27th October 2001, 16:22

I would be impressed if that would work - as far as I know, all Windows versions simulate such pipelining by writing the output to a temporary file; windows programs started with a command line pipe don't run at the same time, they run after each other.

ohliuv · 28th October 2001, 00:25

you may consider using graphedit

Shabubu · 29th October 2001, 21:23

Graphedit is the way to go, worked fine for me doing that anyway (though you wouldn't be using azid)

LigH · 30th October 2001, 09:35

If someone could write an application which streams the output from the Azid decoder DLL to the LAME MP3 encoder DLL, then this conversion shall be easy. DarkAvenger has some experience with the Azid DLL (he used it in HeadAC3he), and the LAME DLL is well documented.

DSPguru · 30th October 2001, 13:33

please remind me of where i can find the lame.dll and its' documentation.
i really don't have spare time, but if i'd find it easy, i'll do it.

LigH · 30th October 2001, 14:19

You'll find Win32 LAME binaries at http://mitiok.cjb.net or http://mitiok.ma.cx; the ZIP archive of version 3.89beta contains a folder named "html", there you'll find a document called "LameDLLInterface.htm".

Unfortunately, for the Azid.dll I couldn't find such a documentation - DarkAvenger shall know a bit about it, I hope. I'll try to ask him.

Wish you much luck...

DarkAvenger · 30th October 2001, 14:52

In fact I wanted to add mp3 support in HeadAc3he, but right now I am a bit short in time, so development is temporarily frozen...

mpucoder · 30th October 2001, 15:11

Maybe there an issue here with the quality of the conversion, but why not use ac3dec or vob2audio?

DSPguru · 2nd November 2001, 10:38

10q, i'll check it out...

DSPguru · 2nd November 2001, 15:11

well, i did check it out and.. made it.
i wrote a tool named 'AC3toMP3' that does the above.

now, i don't have any webspace to publish it, boost/doom9, let me know if you want me to send it to your email.

LigH · 2nd November 2001, 16:09

I would like to see that - in this board, you shall be able to attach it as a zip file to a reply (below the message and option fields you will find an "Attach file:" row, select the file from your local PC's harddisk before submitting).

Or simply send it to doom9 (you will find his mail address at the end of his "Contact" page); you'll notice soon if he wants to publish it.

DSPguru · 2nd November 2001, 17:11

ok, check this out.

- this is the first version of AC3toMP3, so it doesn't support any switches regarding AC3 decoding nor MP3 encoding.
- i guess it has bugs. if you find any, let me know about it.
- if many people would find this program useful, i will continue developing it and will add more features.
- DanniDin, you are invited to add support to my prog in your GUI

Attachment:
AC3toMP3.exe [inputfile.ac3] [outputfile.mp3]

enjoy !

Download latest version: AC3toMP3 v0.7a

Huge · 2nd November 2001, 17:33

This is cool... first observation is that it seems to be going at about 2x original speed on a PIII-1GHz. So a 2hr movie would be done in one hour. Memory usage is also tiny, less than 1MB

What parameters are you using right now for decode and encode?

Naturally, I have some requests for future builds :-)

1) Multi-threaded so SMP machines can make use of extra CPU's. Can you get one thread to decode the AC3 and pass to another thread doing the encoding to MP3?
2) Some kind of configuration for AC3 decoding and MP3 encoding. Even if it's a simple text file that has a line for the Azid parameters and another line for the Lame ones.

DanniDin · 2nd November 2001, 22:01

- DanniDin, you are invited to add support to my prog in your GUI

Not Bad DSPguru, Maybe I'll Add Support when You'll Add Switches

Danni.

DSPguru · 3rd November 2001, 06:55

@DanniDin
if i'll get many respones, i'll add switches.

than, your GUI could "decide" which program to execute : if the user sets only parameters to azid&lame, your GUI could run my program. if the users sets parameters to CLI, than it would execture azid+cli+lame.

anyway, if many ppl would find this proggy useful, i would integerate it with bbdmux & ssrc.
that way, it would do VOB->MP3 :
VOB ->
48khz ac3 ->
48Khz wav ->
44.1khz wav ->
44.1khz MP3.

all in one shot, without intermediate files!

i'll wait and see if doom9 would publish it in his news page.

NS · 3rd November 2001, 08:36

thats an awesome idea...

things i'd like to see are...

- AZid commands like gain options and channel control (i.e lower the sub channel by 3db...)

- 48khz (isn't that what dvd is anywho) @ 96, 128, 160 kbits MP3 encoding

Top stuff..

DSPguru · 3rd November 2001, 08:53

@NS

did you check the speed of current version ?

DanniDin · 3rd November 2001, 21:07

@DSPguru

if i'll get many respones, i'll add switches.
Great

than, your GUI could "decide" which program to execute : if the user sets only parameters to azid&lame, your GUI could run my program. if the users sets parameters to CLI, than it would execture azid+cli+lame.
Exactly

Danni.

Taric25 · 5th November 2001, 02:05

@DSPGuru, Dannidin

Quote:

Originally Posted by DSPGuru
if i'll get many respones, i'll add switches.

So, this is a positive response.

Great program! I say this because it's fast. I was thinking, is it possible for you and Dannidin to work together to make multichannel AC3-> multichannel MP3 without intermediate files?

14th October 2001, 14:16	#1 \| Link
Boost Power user Join Date: Oct 2001 Location: Southern Sweden Posts: 36	AC3->MP3 without intermediate files? Hi! I'm used to the Linux way of doing things. But is there a way of converting AC3 directly to MP3? Is piping really supported under Windows 2000? I mean I would like to do something like: azid movie.ac3 - \| lame - out.mp3 Is this possible or is it on it's way?

2nd November 2001, 15:11	#11 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	AC3toMP3 v0.1a well, i did check it out and.. made it. i wrote a tool named 'AC3toMP3' that does the above. now, i don't have any webspace to publish it, boost/doom9, let me know if you want me to send it to your email.

2nd November 2001, 17:11	#13 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	AC3toMP3 v0.1a ok, check this out. - this is the first version of AC3toMP3, so it doesn't support any switches regarding AC3 decoding nor MP3 encoding. - i guess it has bugs. if you find any, let me know about it. - if many people would find this program useful, i will continue developing it and will add more features. - DanniDin, you are invited to add support to my prog in your GUI Attachment: AC3toMP3.exe [inputfile.ac3] [outputfile.mp3] enjoy ! Download latest version: AC3toMP3 v0.7a Last edited by DSPguru; 30th November 2001 at 12:32.

2nd November 2001, 17:33	#14 \| Link
Huge Nice chap Join Date: Nov 2001 Location: UK Posts: 84	Wow - cool :-) This is cool... first observation is that it seems to be going at about 2x original speed on a PIII-1GHz. So a 2hr movie would be done in one hour. Memory usage is also tiny, less than 1MB What parameters are you using right now for decode and encode? Naturally, I have some requests for future builds :-) 1) Multi-threaded so SMP machines can make use of extra CPU's. Can you get one thread to decode the AC3 and pass to another thread doing the encoding to MP3? 2) Some kind of configuration for AC3 decoding and MP3 encoding. Even if it's a simple text file that has a line for the Azid parameters and another line for the Lame ones.

3rd November 2001, 06:55	#16 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	switches @DanniDin if i'll get many respones, i'll add switches. than, your GUI could "decide" which program to execute : if the user sets only parameters to azid&lame, your GUI could run my program. if the users sets parameters to CLI, than it would execture azid+cli+lame. anyway, if many ppl would find this proggy useful, i would integerate it with bbdmux & ssrc. that way, it would do VOB->MP3 : VOB -> 48khz ac3 -> 48Khz wav -> 44.1khz wav -> 44.1khz MP3. all in one shot, without intermediate files! i'll wait and see if doom9 would publish it in his news page. Last edited by DSPguru; 3rd November 2001 at 06:57.

27th October 2001, 16:22	#2 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, Gardelegen Posts: 1,464	I would be impressed if that would work - as far as I know, all Windows versions simulate such pipelining by writing the output to a temporary file; windows programs started with a command line pipe don't run at the same time, they run after each other.

28th October 2001, 00:25	#3 \| Link
ohliuv Registered User Join Date: Oct 2001 Location: Belgium Posts: 113	you may consider using graphedit

29th October 2001, 21:23	#4 \| Link
Shabubu Registered User Join Date: Oct 2001 Posts: 43	Graphedit is the way to go, worked fine for me doing that anyway (though you wouldn't be using azid)

30th October 2001, 09:35	#5 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, Gardelegen Posts: 1,464	If someone could write an application which streams the output from the Azid decoder DLL to the LAME MP3 encoder DLL, then this conversion shall be easy. DarkAvenger has some experience with the Azid DLL (he used it in HeadAC3he), and the LAME DLL is well documented.

30th October 2001, 13:33	#6 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	please remind me of where i can find the lame.dll and its' documentation. i really don't have spare time, but if i'd find it easy, i'll do it.

30th October 2001, 14:19	#7 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, Gardelegen Posts: 1,464	You'll find Win32 LAME binaries at http://mitiok.cjb.net or http://mitiok.ma.cx; the ZIP archive of version 3.89beta contains a folder named "html", there you'll find a document called "LameDLLInterface.htm". Unfortunately, for the Azid.dll I couldn't find such a documentation - DarkAvenger shall know a bit about it, I hope. I'll try to ask him. Wish you much luck...

30th October 2001, 14:52	#8 \| Link
DarkAvenger HeadAC3he coder Join Date: Oct 2001 Posts: 413	In fact I wanted to add mp3 support in HeadAc3he, but right now I am a bit short in time, so development is temporarily frozen...

30th October 2001, 15:11	#9 \| Link
mpucoder Moderator Join Date: Oct 2001 Posts: 3,398	Maybe there an issue here with the quality of the conversion, but why not use ac3dec or vob2audio?

2nd November 2001, 10:38	#10 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	10q, i'll check it out...

2nd November 2001, 16:09	#12 \| Link
LigH German doom9/Gleitz SuMo Join Date: Oct 2001 Location: Germany, Gardelegen Posts: 1,464	I would like to see that - in this board, you shall be able to attach it as a zip file to a reply (below the message and option fields you will find an "Attach file:" row, select the file from your local PC's harddisk before submitting). Or simply send it to doom9 (you will find his mail address at the end of his "Contact" page); you'll notice soon if he wants to publish it.

2nd November 2001, 22:01	#15 \| Link
DanniDin Registered User Join Date: Oct 2001 Posts: 187	- DanniDin, you are invited to add support to my prog in your GUI Not Bad DSPguru, Maybe I'll Add Support when You'll Add Switches Danni.

3rd November 2001, 08:36	#17 \| Link
NS Registered User Join Date: Nov 2001 Posts: 1	thats an awesome idea... things i'd like to see are... - AZid commands like gain options and channel control (i.e lower the sub channel by 3db...) - 48khz (isn't that what dvd is anywho) @ 96, 128, 160 kbits MP3 encoding Top stuff.. __________________ -NSanity

3rd November 2001, 08:53	#18 \| Link
DSPguru BeSweet Author Join Date: Oct 2001 Location: On top of a supercompact cardinal Posts: 3,506	@NS did you check the speed of current version ? Last edited by DSPguru; 3rd November 2001 at 08:56.

3rd November 2001, 21:07	#19 \| Link
DanniDin Registered User Join Date: Oct 2001 Posts: 187	@DSPguru if i'll get many respones, i'll add switches. Great than, your GUI could "decide" which program to execute : if the user sets only parameters to azid&lame, your GUI could run my program. if the users sets parameters to CLI, than it would execture azid+cli+lame. Exactly Danni.

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