problem when ripping ac3 sound from avi

[HellSpawn]

Hi!I usually encode my movies using the AC3 sound rather than compressing it into an mp3.I wanted to rip the end credits song of one of my movies so I thought to rip the whole soundtrack and then cut the part I wanted.I used Nandub and I also used avi2wav.However I get the same problem.The sound of the wav is completely distorted with breaks.What am I doing wrong?
Thanks!

[pacohaas]

BeSweet and HeadAC3he might come to your rescue here, they can both be used to split, decode, and encode all at once.

[HellSpawn]

Forgive me if I am wrong but Headac3h and BeSweet use sound formats as inputs.I want to put an avi as input and rip the audio.Perhaps you didn't understand what I want to do and what my problem is.
Thanks for the efford and I am looking forward to some further help.:)

[stargazer]

The sound of the wav is completely distorted with breaks.What am I doing wrong?

If I'm not wrong ;) , Nandub can't transcode your ac3 sound. So, in "Save WAV" dialog, you must choose .ac3 extension (you must write it yourself > all files->then write yoursoundfile.ac3 as your output sound file name).

Than you can use HedAC3he or some other transcoding tool to convert it to wav...

[Palikrovol]

I have problems when getting the audio from Nandub. When i see the info. of the file, nundub doesn't know what codec is used and if i try to save it to disk, it stop at the half of the process with the resulting of a not hearable file.

I have been searching in the web for a directshow filter that writes AC3, but without luck :( . I will post a new thread for this.

[pacohaas]

read all of Q15 in the audio FAQ and try all methods/combinations there.

[Palikrovol]

I have found a thread in the forum:
http://forum.doom9.org/showthread.php?s=&threadid=27718
They are making a directshow AC3 encoder filter. Don't know if it will work for us.

I will try now avi2wav and then use besplit.

Thanx pacohaas

[Palikrovol]

It works with both programs (avi2wav and nundub). Of course the use of besplit is needed in any case.

[HellSpawn]

My friend Stargazer, I tried to use Nandub as you told me and indeed it worked...to a point.After I ripped the ac3 stream from the avi I fed it to headac3he but there I got a warning message saying that the last frame was missing or that the stream was corrupted.I continued to encode it into a .mp3 but I had the following problems:
1)The sound was very low.
2)According to the player (media player 7) the mp3 was 34 minutes long but the mp3 kept playing beyond 34 minutes:confused:
3)When I tried to feed it to mp3trim in order to trim the piece I wanted I got a message saying that the mp3 was too long (106%).

What is going on?:confused:
Can you find anything wrong in what I am doing?

Thanks for the help:)

[Palikrovol]

Maybe is a problem with the wav header stated by pacohaas (FAQ. q15).

Fix the AC3 and try again (i don't know if you have done it already)

[stargazer]

Originally posted by HellSpawn

What is going on?:confused:
Can you find anything wrong in what I am doing?


Palikrovol already found it!

Just read the FAQ ;)