Lost Audio by changing Cam settings ... NO Solution ?!?!?

[koala223]

Hi everyone,

I recently recorded 3,5 hours of DV with my samsung VPD15i CAM in 4 different tape (all Panasonic).

During recording I change the audio settings from 12 bit to 16 bit: results?

By Cam I listen the audio, but, when I put the DV file on Pc I lost my audio in the exact point when the setting changes.

I try with WinDV, DVIO, Mainconcept DV and other stuff like this.

Can I recover the audio from my DV tape?

It'a problem of settings (so WinDV etc. can't recognize the audio coding) or other?

Thanks to all for the attention !!!

[LocalH]

Try doing a manual capture for each segment of the tape that has different audio settings, rather than trying to batch capture the whole tape in one fell swoop. This means that you must begin capturing after the audio has changed (so you might clip off a frame or two). You say that you can hear the audio when playing the tape back on the camera, so you know it's there. From Adam Wilt's DV FAQ (http://www.adamwilt.com/DV-FAQ-tech.html):
It's best not to intermix any variations of digital audio on the same tape. While VTRs seem to cope with sudden changes in sampling rate, bit depth, and locked/unlocked status, often you'll get a brief moment of silence at the transition between audio types as the internal workings of the audio chain readjust themselves to the new audio type. Some non-linear editors are very uppity about audio changes; if you start digitizing a 48 kHz clip and the audio changes to 32 kHz, you'll get silence for the entire 32 kHz section (or vice versa; once the capture card and software start grabbing data at a certain rate, they're too busy to try to change rates in mid-stream. Furthermore, the meta-data stored with the clip can only remember one audio format per clip). And if you try to digitally feed such mixed-mode tapes' audio into further digital processing, major glitches can be expected.

The best thing when doing a linear edit is to use analog audio, or (if the only changes you have are between locked and unlocked audio) use the digital outputs from a high-end VTR as described above. For non-linear editing, capture clips each containing only a single format of audio; when you render the finished project, all the audio will be converted to a common format.

[koala223]

Thank you LocalH,

I try and after I tell to everyone if it works for me.

But wait a second how can i manually capture, maybe with Scenalyzer?

Thanx

[LocalH]

If your software doesn't differentiate between manual capturing and batch capturing, then just cue the tape up after the audio changes, then begin capturing from there. If you overshoot and capture more video after the audio changes again, you should be able to trim that down in your editor will no ill effects. Basically, begin capturing until the audio changes. Stop capturing, recue the tape to just after the audio change, and begin capturing again. Do this each time the audio changes. You will now have multiple clips each with one rate of audio, which your NLE should handle just fine.

[koala223]

LocalH ... We lost 1st battle but not the war!!!

Nothing to do! sigh sigh

This is what happen:

Tape 1 : 60 min @ 32 khz - 12 bit
Tape 2 : 30 min @ 32 khz - 12 bit + 30 min @ 32 khz - 16 bit
Tape 3 : 60 min @ 32 khz - 16 bit
Tape 4 : 60 min @ 32 khz - 16 bit

I've captured 1 tape at time in batch mode (also manually but doesn't work)
Captured Tape 1 -> video ok + audio ok
Captured Tape 2 -> 60 min video ok + 1st 30 min audio ok (not last 30 min)
Captured Tape 3 -> video ok + audio not present
Captured Tape 4 -> video ok + audio not present

If I understand what you said: If he manually capture the stream with the same settings, the audio is audible ?!?!?

But I'm in panic becuse all the last 2 tapes is in 16 bit ?!?!?

What can I do? :confused:

[koala223]

I suppose that ther's no solution at this problem.

Some friends suggest me to use Pinnacle Studio that's have some audio settings for DV transfer (seems also downsampling).

No one has the same problem?

No one know a solution?

I understand the problem in the 2nd tape because there's 2 audio settings type, but can't understand the 3rd and 4th that's have only 1 type of audio ?!?!?

:confused: Please Help me :confused:

[koala223]

Someone suggest me to capture dv in type 1 and than convert it to type 2.

But I've read somewhere that type 1 don't have audio, is right or not?

Someone thinking that's a good try?

Thx

[bb]

[...]
But I've read somewhere that type 1 don't have audio, is right or not?
[...]DV type-1 contains the video and audio in a single stream (intermuxed). DV type-2 contains the audio twice: once in the video stream (intermuxed), and once in a separate audio stream. type-2 has been created for VfW compatibility, but depending on the software you use, there may be synch issues. I'd rather recommend to work with type-1, if your programs can handle it.

bb

[feedback]

Someone suggest me to capture dv in type 1 and than convert it to type 2.

But I've read somewhere that type 1 don't have audio, is right or not?

Someone thinking that's a good try?

Thx
Ulead VideoStudio 9 and NeroVision will allow you to capture your DV-AVI in type 1 or type 2. They both have free trials available.

I captured in type 2 with better looking video, to my eyes, than in type 1, however the two crappy programs that I tried to use to import the type 2 for editing and adding effects would not work properly, Win.MovieMaker needed a codec and Arcsoft which came with my burner would not import the audio, only the video.

I am going to stay with ulead and nero. Try capturing your DV in type 2 and see what happens, you have nothing to lose. Besides with type 2 you have two separate streams and that may do the trick.

The free trial of Ulead VisionStudio 9 should do enough to see if it is going to work for you, no need to buy before you try.
Or the NeroVision trial...it is a smaller download.

I am sure there are programs out there that are as good are better and maybe even totally free, but these are all I can suggest that add effects and such at this time.

BTW, Ulead has a freeware DV Converter that changes DV Type I format video to DV Type II @ www.Ulead.com


Regards,:)

P.S. If the audio is on the original tape you just have to find a way or codec to get it on your computer.

Read this link Here. (http://www.videohelp.com/forum/viewtopic.php?t=213552)

And for more info than you probably even care to read Go Here. (http://www.infocellar.com/Video/dv.htm)

[mic]

Microsoft has several links by searching site with DV AVI
http://msdn.microsoft.com/archive/en-us/directx9_c/directx/htm/type1vstype2dvfiles.asp