can't compress or do anything with this ac3 audio

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Sunday 5.7.2009 / 15:52

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can't compress or do anything with this ac3 audio

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solidus3

Newbie

19. May 2008 @ 04:41

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I can't seem to do anything with this audio other than extract it from the mkv.

I tried compressing it with behappy and aften. It outputted a file but after 2 seconds, the audio was silent.

I exported it as wav then converted to ac3 with aftengui and or wavtoac3 guis, and same result.

I tried loading it in ac3fix and it said "in ok".

I tried loading it on headac3he, but it wouln't load > "could not load source file". All other ac3 files I tried loaded fine on here.

This is what I get with mediainfo from the extracted .ac3 file:

Audio
Format : AC-3
Format/Info : Audio Coding 3
Bit rate mode : CBR
Bit rate : 384 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz

This is what I get from the .mkv file:

Audio
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : A_AC3
Duration : 2h 31mn
Bit rate mode : CBR
Bit rate : 384 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Title : AC3 5.1
Language : English

Any idea what's going on?

http://www.gigasize.com/get.php?d=lhqyth4xkyf << link to sample ac3 file im using

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This message has been edited since posting. Last time this message was edited on 19. May 2008 @ 05:01

attar

AfterDawn Addict

19. May 2008 @ 06:51

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Played the AC3;I hear ten seconds of music, about fifteen seconds of quiet then the dialog.
Opened the AC3 in Belight, converted to mp3 and got the same result.

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solidus3

Newbie

19. May 2008 @ 06:59

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yea that sounds about right

but can you try compressing the ac3?

ac3 to ac3

see what you get

also, what encoders are you using?

edit: damn, i did get audio, but using belight and the ac3enc

but the audio is delayed or something, it's no longer in sync with the video

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This message has been edited since posting. Last time this message was edited on 19. May 2008 @ 07:59

attar

AfterDawn Addict

19. May 2008 @ 08:41

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There's an advanced setting in BeLight to change the frame rate which changes the length of the file.

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