no sound in DV captures

[Onceler2]

There was sound when I first started capturing in WinDV but after a few tapes I found that my AVIs had no sound.
I tried dvapp and also DVIO with the same results. I tried rebooting my computer still no sound.
Does anyone know what is going on?

[guns1inger]

Playing them back with what ? How are you testing the files ?

[Gavino]

What does GSpot or MediaInfo say about the audio content of your avi files?

[Onceler2]

it doesn't matter what program I use to playback,they all have no sound-WMP,virtualdub,nero etc..

[guns1inger]

Post a MediaInfo Tree output of the files in question

[Safesurfer]

Sounds like a DirectShow problem. Try reregistering the quartz.dll file -

In Windows: Start>Run>regsvr32 quartz.dll click OK and reboot.

If that doesn't fix it, try an app such as Filmerit to try and diagnose any DiretShow problems on your system.

[aedipuss]

is winDV set to capture type I or type II DVavi? whichever, try the other.

[KingSeti]

Onceler2, same thing happened to me about 8 to 10 months ago and it ended up being the audio setting on the camera. I had changed it to 16 bit and nothing would transfer it, windv or dvio or scenealyzer and i do believe dvapp. I thought it was all kind of problems on my computer! I do believe I ended up using enosoft dv processor, if memory does not fail me. After I got that tape transfered I changed back to 12 bit and windv worked again. If it matters, I also use type 2.

[edDV]

I use 16 bit stereo audio as default. No troubles with any software.

[JohnnyMalaria]

There are a number of 16-bit formats: 32, 44.1 and 48kHz. Only the latter is commonly employed. 32kHz is unusual and I've never come across DV equipment with 44.1kHz. 32kHz is usually found as 12-bit dual channel and is the only 12-bit format.

[KingSeti]

I have a canon zr70mc and the book states that 16 bit is 48khz. Unfortunately, nothing brought it over in the firewire transfer but enosoft. I was and still am puzzled! When I switch tapes I will try a short clip at 16 and try to transfer again.

Onceler2 have you tried enosoft dv processor or have you found the cure by other means?

[JohnnyMalaria]

I'm not sure why this would happen. There's nothing particularly special about how the DV processor does the capturing (just uses the DirectShow stuff provided by Windows like nearly every other capture app).

The DV processor displays the audio format during capture so it will be interesting to see what it says.

[Gavino]

I have had problems (also with a Canon) capturing 16bit/48KHz audio in the past (using various capture programs, but not Enosoft). To make it work, I found I had to manually start the tape rolling over a 16-bit section before starting the actual capture. (So now I make sure I have a few seconds of unwanted footage at the start of each tape. )

[2Bdecided]

Same issues as above with Canon HV20. I almost never shoot DV with that camera, but the one time I did, there was no sound once captured.

winDV / type 2 created a file with a single frame of 32kHz audio (despite the file being ten minutes long!).

Enosoft / type 1 worked fine.

It didn't matter how the files were played back - it wasn't a playback problem!


I didn't try to debug it further - I have no intention of shooting DV with this camera, and all my old DV tapes are 12-bit, and capture fine from this camera.

Cheers,
David.

[Gavino]

Looking back on some notes I made at the time, what I discovered was:

- capturing as Type 2 gave file with very short audio (< 1 sec)

- capturing as Type 1 gave file that is incorrect in some way, properties says sample rate is 32Khz
-- playing in WMP works at first, but after any seeking, audio plays at wrong pitch
-- VDub seems to recognise as 48KHz, and copying within VDub creates corrected file (copy is a Type 2)

Further experiments suggested problem is startup condition in camera-DV link, seems to always start in 32K mode.
Solutions:
- Start each tape with short dummy sequence, and use split by timestamp in WinDV to capture it separately as 1st file (subsequent files are written correctly).
- If not possible, start camera playing back manually slightly before (say 0.5 sec) starting capture.
- As last resort, capture as Type 1 and convert with VDub

[Jim44]

Further experiments suggested problem is startup condition in camera-DV link, seems to always start in 32K mode.
Solutions:
- Start each tape with short dummy sequence, and use split by timestamp in WinDV to capture it separately as 1st file (subsequent files are written correctly).
- If not possible, start camera playing back manually slightly before (say 0.5 sec) starting capture.

Joining the discussion late, but starting the camera slightly before capturing is the solution I also found when I had a similar issue (no sound on some transferred DV). There's a known bug in WinDV that effects using the WinDV camera controls and not getting audio; confirmed by WinDV's developer.

You can see my two posts about here:
http://forum.videohelp.com/topic208025.html#834003

Hope that helps,
Jim

[Gavino]

Thanks, Jim - very interesting thread.
Reassuring (in a way) to know that you had the same experience with the same conclusions.
I'm not so sure that the bug is specific to WinDV though, as I had the same problem (or at least similar, I didn't investigate to the same level) with other programs, including (IIRC) WMM and Nero.

[thetylerhayes]

I just wanted to say that this post helped me solve my problem, when nothing else on the Internet could. Even registered because I wanted to say: Thank you.

As for the details:
- Rented a P2 Panasonic HD camcorder to record on DV tape (ran out of HDV hard drives for the camera)
- Also recorded, on the same DV tape, some material from a crappy off-the-shelf DV handheld camcorder, felt like it cost $25
- At home, hooked up a Sony DCR-TRV8 Mini-DV Handycam, via firewire, to my standard video capture rig
- Tried capturing with DVIO (love that program)
- Video captured fine. Audio from crappy camcorder came through, but P2's audio didn't.
- TURNS OUT: The crappy camcorder recorded in 12-bit, the P2 recorded in 16-bit. Hence, my Sony DCR-TRV8 put itself into 12-bit mode because the crappy camcorder's material was first on the DV tape.
- SOLUTION: Captured (on the DCR-TRV8 remember) the 12-bit audio from the crappy camcorder at the beginning of the tape in 12-bit mode. Stopped the tape on the camera. Stopped DVIO. Started a new file in DVIO. Switched the DCR-TRV8 to 16-bit mode, pressed play. Started capturing in the new file in DVIO. Problem solved!