I don't understand!! Audio off when converting avi-dvd

[only_emo_kid]

Alright, so I used DVDSANTA to convert a movie from .avi to .vob's and burned with nero, so I fast forward, and the audio is off by about 3 seconds... WTF

[Forum Troll]

How is the audio in your AVI encoded? Best results are obtained using 48 Khz 16-bit LPCM (wav) audio. If it's MP3 (especially MP3 with VBR audio), this can cause problems. Open your AVI in GSPOT and see what it tells you.

[mats.hogberg]

Who knows what can go wrong with "black box" type of applications like DVDSanta?
Try some of the AVI to DVD guides here, using specialized tools for each step of the process. That way, it's much easier to pin point where the error occurs.

/Mats

[jimmalenko]

Who knows what can go wrong with "black box" type of applications like DVDSanta?
Try some of the AVI to DVD guides here, using specialized tools for each step of the process. That way, it's much easier to pin point where the error occurs.

/Mats

... but I pressed Go!

What ELSE do I need to do ????????

[only_emo_kid]

I tried the guide with TMPG and then TMPG dvd author, and it still happened, wtf

[jimmalenko]

Use GSpot or AVICodec on the file and post a screen dump here.

[only_emo_kid]

i already deleted the .mpg....

[jimmalenko]

Not the MPG, the AVI !

[only_emo_kid]

....

[Gurm]

What happened is that a monkey encoded your AVI. Yes, a monkey. Not even a trained monkey.

Let me guess - it was something you downloaded from the IntarWeb, right?

Sadly, most AVIs are encoded with XVID. XVID is secret geek-code for "made by pirates, for pirates, and without any regard for good coding conventions". As a result, it is usually paired with hideously broken VBR MP3 audio, encoded by... yes, that's right... poop-flinging untrained crap monkeys.

To fix this problem, take the avi, load it into virtualdub, save the audio as a wav (after saying "ok" to the box that comes up and tells you that it was encoded by shitty little monkeys and will be off by... wait for it... 3 seconds!), then go to audio, pick "wav audio", pick "full processing", and under "compression" pick MP3 audio with a constant bit rate of 192. Then under video, pick "direct stream copy", hit "save as avi", wait 2-3 minutes tops, and you have a FIXED AVI! Woo!

Now I _AM_ assuming that you have a real MP3 compressor on your system, like Frauhoffer or something.

[jimmalenko]

Thanks for the screen dump - it makes it so much easier !

Gurm's spot on. What he said.


I'm just waiting for the minority to post, rebutting the "...XVID is secret geek-code for "made by pirates, for pirates, and without any regard for good coding conventions..." line though with highly legitimate possible uses

[only_emo_kid]

Can you explain whut to look for so I know if its wrong with all my other .avi's?

[jimmalenko]

Can you explain whut to look for so I know if its wrong with all my other .avi's?

See how in the name bit for the audio, it says MP3 ? That's your problem right there.



Most things you download that have MP3 audio have VBR MP3 audio, which as Gurm explained, results in funky results if left as is.

[only_emo_kid]

Can you explain whut to look for so I know if its wrong with all my other .avi's?

See how in the name bit for the audio, it says MP3 ?

LMAO OK!! simple enuff... ahaha..

[jimmalenko]

LMAO OK!! simple enuff... ahaha..

Yep, it is pretty simple when you know what to look for

Can you see the benefit (how much easier it is to help) from posting a screen dump ?

[only_emo_kid]

yeah, of course.. I knew a pic would help.

[jimmalenko]

Coool

[mats.hogberg]

How can I resist?

Sadly, most AVIs are encoded with XVID. XVID is secret geek-code for "made by pirates, for pirates, and without any regard for good coding conventions".

I'd rephrase that to "made by geek, for geek, without any regard for if non-geek can play it/convert it to some other format or not" Rather the opposite of pirate, as the pirate should try to do their stuff as easily accesible as possible.

/Mats

[Raen]

Most Xvids are actually made with compressed AC3 files. Most DvD authoring tools won't do jack with them.

I had the problem on the first Xvid I tried to make into a DvD. I tried Avi2Wav, tried BeSweet, tried Vdub and while they would give me audio files that were clearly correct when I played them in Widow's Media player, they would not work when encoding a DVD.. even with an ac3 filter or codec.

After trying many things I found out the reason it didnt work. The audio was compressed in the xvid. I used avi2vcd. Thats right, Avi2Vcd. There is an option in the program that decompresses the audio. Instead of a 750ish meg avi you get a 2 gig one with uncompressed audio. This audio could be used in Tmgp giving the final product the missing sound.

[Gurm]

Most Xvids are actually made with compressed AC3 files. Most DvD authoring tools won't do jack with them.

Dude, dunno where you're getting your xvids, but I've downloaded perhaps 500 tv episodes, dvd-rips, and other xvids in the past year, and they've ALL been MP3 VBR, broken audio. Every damn one.

As for "finding out" if they have broken MP3?

Fire up VirtualDub (it's free), load the avi (with file->open), and it'll pop up a nasty little box that says "your audio is FOOOOOOOOKED!"