Extracting audio from an AVI

[Larry!]

Re: Extracting audio from an AVI

somebody........help. Please?

Open video in virtualdub, go to "file"(left upper button like in explorer) highlight "save wav" and click it. Hope you've got simple virtualdub, coz in virtualdubmod it's a bit more complicated.

[ChristinaS]

Re: Extracting audio from an AVI

That's not a huge problem, really, since header of audiofile will remain the same, so any player will figure what filter to use. Or, to avoid confusing, change extension to what it is.

Unless we are not using the SAME Virtualdub program, mine always creates a PCM wav 44.1KHz, 16-bits, 2-ch stereo apparently - thus, if the intrinsic audio track of the video was different it must be converting it to that. I have seen reference to options in respect to changing specs like frequency, bits, etc, but I haven't foudn a way to activate them, so maybe I have an incomplete version. Anyway, it doesn't appear to convert too many different types of video files. Basicaly it's .avi and .mpg (and a few variations on these). No .mov or .wmv so you still need other programs.

Another good and easier video to audio converter is from http://audiotoolsfactory.com/ .

[neilthecellist]

Re: Extracting audio from an AVI

got mine from http://www.sourceforge.net

[Larry!]

Re: Extracting audio from an AVI

Unless we are not using the SAME Virtualdub program, mine always creates a PCM wav 44.1KHz, 16-bits, 2-ch stereo apparently - thus, if the intrinsic audio track of the video was different it must be converting it to that. I have seen reference to options in respect to changing specs like frequency, bits, etc, but I haven't foudn a way to activate them, so maybe I have an incomplete version. Anyway, it doesn't appear to convert too many different types of video files. Basicaly it's .avi and .mpg (and a few variations on these). No .mov or .wmv so you still need other programs.

Another good and easier video to audio converter is from http://audiotoolsfactory.com/ .

Hmm... That's weird, cause i'm using nandub for a few years and never noticed such behavior. =) Dunno about quicktime(mov) and realmedia(rm), but for most other containers, such as mpeg1, mpeg2, ogm, mkv - virtualdubmod handles them.

[ChristinaS]

Re: Extracting audio from an AVI

Hmm... That's weird, cause i'm using nandub for a few years and never noticed such behavior. =) Dunno about quicktime(mov) and realmedia(rm), but for most other containers, such as mpeg1, mpeg2, ogm, mkv - virtualdubmod handles them.

You're mentioning virtualdubmod - but I was using just virtualdub (which I have just upgraded to latest version). I didn't run into any virtualdubmod :confused:

Now you're also mentioning nandub ......

[Larry!]

Re: Extracting audio from an AVI

You're mentioning virtualdubmod - but I was using just virtualdub (which I have just upgraded to latest version). I didn't run into any virtualdubmod :confused:

Now you're also mentioning nandub ......

Nandub is same as virtualdub, but has more options for adding audio and it also uses only divx 3.11;-) and mp4v3 for video processing. All other functions are the same. Virtualdubmod is modification to regular virtualdub, but also with an expanded options for audio and it accepts more formats, like mpeg2, mkv and so on. I guess, that you just misunderstand a bit virtualdubs extracted file. Dbpoweramp plugin in explorer shows the file extracted by it as "wave format sound 44.1 16bit", but on bottom of popup it shows also "mp3 format sound"(But not always =/). To make sure, you also can use hex editor(there's one in virtualdub, but read-only) to open it, and you'll see, that header of file is actually mp3. :rolleyes:

P.s.: Or, just rename extension .wav to .mp3 - to do so, in windows explorer go to tools> folder options > view> and uncheck "Hide extensions for known file types". After file extension is renamed, dbpoweramp will show all correct info in its popup, even which codec was used to encode it.

[ChristinaS]

Re: Extracting audio from an AVI

Larry, it's not that I misunderstand, it's that my version of virtualdub only extracts a PCM 44.1KHz 16-bit wav, regardless what you start with. So if the actual audio track is something else (by virtue of whatever compressed format the video file is) , then this means it must be converting it internally before saving it as the etxracted wav. I dont have virtualdubmod or nandub, just plain virtualdub. And the wav is a real-to-goodness PCM wav, not just a wav extension tacked onto an mp3 or a different type of compressed wav.

I tried this with an uncompressed AVI, a compressed AVI and an mpg of the same exact video. Same result, though the wav varies just a bit due to decompression, but it's still a 16-bit PCM 44.1KHz stereo wav. All 40MB or so of it. I don't have other video types right now that virtualdub can work with, so I don't know if others would yield different results.

[Larry!]

Re: Extracting audio from an AVI

Christina

Ok i guess then, that your movie contains its sound in a pcm format. :D
Well, i would recommend then a small cute little proggie called gspot,=) which will helpya to figure out what formats your movie file consists of easily.

[ChristinaS]

Re: Extracting audio from an AVI

Christina

Ok i guess then, that your movie contains its sound in a pcm format. :D
Well, i would recommend then a small cute little proggie called gspot,=) which will helpya to figure out what formats your movie file consists of easily.

Ah, then this must be because I always use audio from a PCM wav when I make the movie files LOL! Even if I do a video capture, I define the audio as PCM Wav - never tried a different format. Then I encode them to various other formats: mpg, rm, wmv depeding on what I need.

[neilthecellist]

Re: Extracting audio from an AVI

Are we all using the same VirtualDub? Mine is version 1.6 or something like that....I got it from http://www.sourceforge.net

[neilthecellist]

Re: Extracting audio from an AVI

Oh yeah, and I almost forgot to ask....can either dMC or VirtualDub split an AVI file so I can make a VCD out of the AVI file? Thanks for your help, everyone!

[Larry!]

Re: Extracting audio from an AVI

Oh yeah, and I almost forgot to ask....can either dMC or VirtualDub split an AVI file so I can make a VCD out of the AVI file? Thanks for your help, everyone!

What you mean by vcd? Original vcd have to contain its movie in mpeg1 format, audio in mp2, to be dvd player-compatible. Nero can save your day in that case. =) Or, if we talking here about splitting xvid/divx/mp3/etc. avi file to fit 700mb cd, use virtualdub. Use slider on the bottom to mark start and end of segment, then "save as"(in both video and audio select "direct stream copy").

[neilthecellist]

Re: Extracting audio from an AVI

OMG !!!! Thank you so much!!!

but after i split the avi file, how do i burn it? Do I use Nero 6 to encode the AVI file to vcd format? That takes A LONG LONG time. like, 2 hours just to burn a 52x CD, just because it spends 1 hour and 58 minutes encoding the AVI file.

[Larry!]

Re: Extracting audio from an AVI

2 hours sounds ok to me. Seems you've got kinda fast cpu.

[neilthecellist]

Re: Extracting audio from an AVI

uh.....Larry!, are you being sarcastic?

2 hours is a pretty damn long time for me. I have a 733 mhz Celeron Processor.