Extract WAV from Type-1 DV AVI file?!?!

[jea46f]

I just captured a DV stream from a JVC DV camcorder into an AVI file using MGI Videowave 4. The program doesn't allow you to compress or change the settings, so it captured at 720X480 as an AVI with I don't know what as a bitrate for the audio. The audio sounds okay, but crappy after converted to MPG. So, I'd like to extract the audio from the AVI.

I tried using VirtualDub, but I get the following error when opening the file:

"Warning: Type-1 DV file detected. Type-1 DV files have video and audio combined into one stream, and VirtualDub curently cannot extract the audio. Only the video stream will be available."

I have searched to try to find the answer with no luck. Can someone help me?

Thanks,
Eric

[RPM]

I recommend TMPGenc Plus. This program is $50, but nothing under $1000 is better at converting files, demuxing, and it works well to cut and paste, too. For encoding audio, you should get the free TooLame encoder, but for demuxing, it isn't necessary.

Doom9.net has more information.

[jea46f]

I don't want to encode the audio to MP2. I want to extract the WAV from the AVI. I tried using Quick Time Pro 6, but it only allows 4 minutes and 56 seconds for whatever reason.

If anyone can help me extract a WAV from a Type-1 DV AVI file, please let me know how.

[vhelp]

jea46f,

Actually, when you use tmpg to extract the WAV part of the DV Type 1
file, you go into tmpg and:
* input the DV file into the Audio box (not the Video, but doesn't
really matter)
* then, "File/Output to file/WAVE file" then give the file a name.

That's it. There you have it.
Now, you can take that *.WAV file into vdub and continue on your
merry way, OR, do whatever is was that you were trying to do.

-vhelp

[Bondiablo]

You could also use the Canopus DV File Converter to convert your AVI to a Type 2 which virtualdub can handle. In the furture you could use a free program called DVIO or Scenalyzer Live for $33 to transfer from your cam. Either of those can save as either Type 1 or Type 2.

[mdm]

jea46f:

Just a FYI: You weren't able to change the resolution or compression because you aren't really "capturing" the video. You are merely copying the already compressed audio/video from the camera to your computer.

You say the the audio sounded "crappy" when converted to MPG - what software did you use to do this? Were the audio settings correct? I have a JVC camera also and the audio sounds just fine when converted to MPEG2.

[jea46f]

vhelp, Thanks! I didn't notice the File > Output option at all.

mdm, The sound of the MP2 was crappy when compared to the AVI's sound. I'd much rather have the WAV extracted from the AVI than the AVI > MP2 > WAV.

[mdm]

I don't understand what you are trying to accomplish. Is it just the audio that you need? You said the audio sounded crappy when converted to MPG - are you trying to create a VCD/SVCD/DVD compatible MPG video file? If so, what application are you using to do it? I'm asking because there is no way for the audio to turn "crappy" unless the audio compression settings are incorrect or you are using a bad audio encoder.

[mikeinfwa]

I had the same "hiss" problem. I am capturing HI8mm through "firewire" using "dvio" and "sclive" at 720x480. I then use Tmpgenc to convert to VCD and/or SVCD. The captured AVI file sounded great. But the VCD/SVCD had the "hiss".
I had to use "virtualdub 1.4.13". I would open the AVI file with virtualdub then clik on the "file information" to see the audio info. It showed 32000HZ 16 bit stereo. I guess Tmpgenc has trouble converting the 32khz audio into 44100hz. To eliminate the "hiss", clik the "audio" tab in virtualdub then clik "audio conversion". Then change the "sampling rate" to 441000hz. clik ok. then clik on "file" then clik on "save wav". Name the wav the same name as the AVI (i do). virtualdub will then create a new wav file for the AVI. (the avi still has it's embedded audio)
THen when you use Tmpgenc for vcd/svcd, just use the avi and it's new saved "wav".

THis worked for me.

mike

[p_l]

Or... use SSRC as the sampling rate converter in TMPGEnc instead of TMPGEnc's own. It really solved my crappy audio from a DV source problem. Once you set it up in TMPGEnc, it works automatically thereafter; no need to convert and extract .wav in VirtualDub anymore.

Get SSRC here.

Extract it to the TMPGEnc folder. In TMPGEnc select under Option->Environmental setting->External tool->Sampling frequency converter and select Browse, and then select ssrc.exe from where you extracted SSRC.



Hope this helps.

[yg1968]

If you are converting to DVD, you can simply adjust your camcorder's audio to record audio at 48khz (instead of 32khz).

[mdm]

yg1968:

You can't always do this - my JVC has no adjustment for a khz setting, but "bits".

I've been converting all my miniDV to 48khz (within TMPGenc) for burning to DVD and have not noticed any loss of quality in the audio. Maybe it only happens when converting from 32khz to 44.1khz?

p_l: Thanks for the link, I think I'll keep that on hand in case I *do* ever have this kind of problem.

[yg1968]

Setting it to 12 bits will give you 32khz.
Setting it to 16 bits will give you 48khz.

See this link on audio DV specs:

http://www.adamwilt.com/DV-tech.html

[mdm]

yg1968:

I had always assumed what you said, but my captured AVI's (from my DV) say they are 32khz even though my camera is set to 16-bits. I guess it could just be an error or glitch in my system, but it all works well so I'm not going to worry about it