Converting the Audio from WAV to MP2 in TMPGEnc - Why Not?

sparskter · #1 07-10-2005, 12:52 AM

Hello!

I downloaded: KVCD From scratch – A Users guide v1.1 just to see it and learn new things

And I´ve seen a topic in http://www.kvcd.net/forum/viewforum.php?f=8 (do not remember wich one =[) that we must NOT use tmpgenc to encode(transcode?) from wav to mp2?!

Wow!? Before I got this forum, i´ve encoded many kvcd´s using tmpgenc for the mp2 audio

And they worked pretty fine! So, why to use headac3he/BeSweet to encode(transcode?) from wav to mp2 ? And, beside that, wich one is recommended ? Headac3he or BeSweet?

best regards

kwag · #2 07-10-2005, 01:31 AM

Quote:

Originally Posted by sparskter

So, why to use headac3he/BeSweet to encode(transcode?) from wav to mp2 ?

HeadAC3he and BeSweet are far better audio encoders than TMPEG's internal audio encoder.
To give you an example, an audio encoded with HeadAC3he at 128Kbps, sounds about the same as an audio encoded with TMPEG at ~160Kbps

That's how good those encoders are

Not to mention that the audio frequencies of DP II (Dolby Prologic II) are better kept with HeadAC3he and/or BeSweet, but not so with TMPEG.

-kwag

sparskter · #3 07-10-2005, 02:33 AM

Thanks kwag!

Besides:

And if try open again:

=/
And the source (wav) is a PCM-no compression format >_<
Using SSE-2 dll´s thought.

Dialhot · #4 07-10-2005, 08:38 AM

Your wav is not a wav but more probably a wrongly demuxed mp3 stream extracted from a divx and badly called ".wav".

A wav is near 1 GB for 1h30min of movie. If your file is only some MB, then you should learn how to deal with a Divx first.

Am I right ?

Prodater64 · #5 07-10-2005, 11:10 AM

Quote:

Originally Posted by Dialhot

... If your file is only some MB, then you should learn how to deal with a Divx first.
Am I right ?

But not asking here (about divx, I mean)

You can add toollame as external audio encoder and then encode with TMPGEnc in a straight way, with a better audio engine than TMPGEnc internal one.
Your audio will be converted in wav first (I don't know what program does it), and later in mp2. I like this way but you need to know how to manage audio in avs scripts, more if you are doing format conversion.

sparskter · #6 07-10-2005, 11:12 AM

Thanks Dialhot!

It is a wav extracted from a 20 min video, using Full Processiing Mode and PCM compression mode iin Virtual Dub

Well, I tried HeadAC3he 0.24aXX and it worked! Probably a bug in 0.23a.

Besides, laste version of HeadAC3he is 0.25a2

http://forum.gleitz.info/showthread....&page=22&pp=10

but, DarkAvenger put a password in the rar file! ¬¬

cw_uk · #7 07-11-2005, 09:57 AM

i cant read whatever language that is but even i can see where it tells you the password is untested

Quote:

Ok, hier ist es. Neben den obigen Einschränkungen gilt es zu beachten, daß die Version mangels Zeit (eigentlich sollte ich an meiner Promotion arbeiten...) kaum getestet ist, darum lautet das Paßwort "untested". Solange kein hinreichend postives feedback über Funktion gekommen ist, bitte die Version auch nicht weiterverteilen.

Änderungen:

Gain wird etwas anders als in den vorherigen HeadAC3he Versionen gehandhabt:

- Input gain wird *nur* bei Downmixen berücksichtigt. (Evtl ist hier ac3/azid eine Ausnahme, muß ich mal überprüfen und es vereinheitlichen...)
- Output Gain, wie auch global Gain wird *immer* berücksichtigt, auch im ersten Pass bei 2-pass. Meldungen von Azid über decoding overflows sind zu ignorieren, denn die tun nicht weh im 2-pass bzw bei hinreichend negativen global gain. (Im übrigen sollte HAC3 0.25 korrektes clipping durchführen.)
- Bei Nutzung von Resampling wird nun SSRC im ersten Pass mitberücksichtigt.

Getestet werden sollte:
- Wird LFE (bei downmix, bei seperater Spur) korrekt gemixt/verstärkt?
- Werden die input und output gain Parameter entsprechend s.o. richtig umgesetzt? (Testen, mit/ohne: Booster, ssrc, verschiedene Quellen, verschiedene Targets)
- Funktioniert der dumb 2-pass zuverlässig und werden dabei die output gains richtig umgesetzt?

Anhand der Testkombinationsmöglichkeiten sollte klar werden, warum ich keine große zeit dafür habe. Entsprechend hat jeder, der mir helfen will, auch die Möglichkeit dies zu tun. Man sollte sich dabei ein Bsp an LigH (siehe einige Seiten zurück) nehmen, wie sinnvolle bug-reports aussehen, so daß der Fehler schnell korrigiert werden kann.

Ich hoffe, ich habe nicht allzu viel Mist bei dem build gemacht.

Viel Spaß!

kwag · #8 07-11-2005, 11:42 AM

Thanks cw_uk

-kwag

sparskter · #9 07-11-2005, 03:38 PM

@Dialhot
Just to note:

www.virtualdub.org wrote:

Quote:

I've released VirtualDub 1.6.9 has a quick hotfix for a few issues that were found since 1.6.8; most are minor except the audio compression error bug.

Maybe thatwas the reason I was getting problems on headAC3he 0.23a
Well, I updated my vdub and I am using 0.24a13 now anyway

Quote:

i cant read whatever language that is but even i can see where it tells you the password is untested

-LOL-

Thanks @cw_uk !

I did not notice that =/ I looked over the whole page, but always straight down to the link. Nevertheless, DarkAvenger said on his website: the usable version is 0.24a13 . So If anyone wanna try 0.25 at own risk

Dialhot · #10 07-11-2005, 05:46 PM

Quote:

Originally Posted by sparskter

Maybe thatwas the reason I was getting problems on headAC3he 0.23a
Well, I updated my vdub and I am using 0.24a13 now anyway

Unlucky then