DV -> DVD Audio help

[hoops10]

Ok, I've converted my type-1 .avi to type-2 .avi. I used Avisynth -> CCE for the video, used pulldown, and imported the .m2v file into Maestro. Now here's the problem, the audio. I tried using vdub to 'save the wav' but I get this error, "Unsupported Media: Invalid Sampling Rate (0xc10b0006)" when I try to import it into Maestro.

I can't use the 'save to wav' function in the dv capture program because I already have the full raw .avi on my hd. Is there any other way to get the audio in a format, PCM??, so that I can import it into Maestro? Thanks.

Here is the File Information for the Audio part from vdub:

Sampling Rate 32000Hz
Channels 2 (stereo)
Sample Precision 16-bit
Compression PCM (uncompressed)
Preload skew 0 samples (0.00 s)
Number of frames 86526
Min/Avg/Max/total frame size 4268/4270/4272 (360874 K)

Hope this extra info help. Thanks.

[rubic42]

I think what you're missing is that DVD audio needs to be at a sampling rate of 48KHz, not 32KHz as your audio seems to be at.

This is usually easily solved on my Sony camcorder by using the high quality mode, which saves 48KHz audio.

VirtualDub can convert the audio to 48KHz as you "Save to WAV", and then it should be acceptable in any DVD authoring program.

[bb]

I guess Maestro doesn't support 32 kHz sampling rate. Use the WAV file you saved through VirtualDub, then use SSRC (available at doom9's downloads) to upsample to 48 kHz. The resulting WAV file should be compatible.

bb

[theReal]

... try to set your camcorder to 48kHz 16bit.

Usually, the 32kHz 12bit audio is for adding another audio track to the DV tape without the help of any other devices (you can just add another audio track through the microphone jack). If you don't need that option (you have a PC to add as many audio tracks as you like) then 48kHz 16bit is much better.

[bb]

My camcorder supports 32kHz only, but I can choose 12 or 16 Bit. I always use 16 Bit.

bb

[theReal]

Oh, I thought the 48kHz 16bit vs. 32kHz 12bit were kind of standardized DV audio formats, I didn't know this depends on the camcorder.

[hoops10]

bb and theReal

I have the SOny DCR-TRV240 Digital 8 camcorder. Does this have 48 kHtz sound?

[bb]

@hoops10:

Yes:
PCM Digital Stereo, 12 bit 32 kHz/4ch, 16 bit 48 kHz/2ch

See:
http://www.mpsuperstore.com/video/indexMy.htm?discr7105.htm


I still like my cam (Canon MV3), because it supports progressive scan: no deinterlacing trouble!

bb

[bbiandov]

Hello all,

Ok so can someone summarize the procedure for converting 32kHz 12bit audio to 48kHz 16bit. I unfortunately did lots of tapes using my cams default 32kHz 12bit before discovering that I can switch it to 48kHz 16bit. I have Sony PC5, its a great cam but with this audio now I am stuck fixing my old tapes.

Just letting the encoder think the source is 48kHz when it is 32kHz causes really bad audio quality,

thanks

[bb]

You can upsamle using SSRC (available at doom9's main download page). Depending on what codec you use you may get better quality if you leave it 32kHz (e.g. if you encode to MP3).

What you can't do: Improve audio quality by upsampling from 32kHz 12Bit to 48kHz 16Bit.

bb

[theReal]

Try keeping the 32kHz 12 bit audio - I find it doesn't sound that bad, especially for background sounds and voices recorded with the camcorders internal microphone.
Maybe if you want to add a lot of music when editing your videos then 48kHz could be better, but you have to try it (the music has to be either up- or downsampled by the editing prog anyways because it's usually 44.1KHz 16 bit)