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Posted by Gene E. Bloch on 06/02/06 17:30
On 6/02/2006, raida4life@yahoo.com posted this:
> David Matthew Wood wrote:
>>> I recently had some people helping me out with some video recordings.
>>> Some tapes I got in 8mm and have always been able to transfer these to
>>> VHS or DVD via RCA cables. Similarly I got some that were Digital 8 and
>>> I was able to do likewise.
>>>
>>> Recently I got some Mini DV (not Mini DVD) tapes and discovered after
>>> the fact that all of these recordings were done in such a format that
>>> the Audio is not reproducible by any other means than from the guy who
>>> taped these for me. The video always comes through fine, it's just the
>>> audio I am having trouble with. I tried a couple of iterations of
>>> swapping out the audio cables and made sure they were properly
>>> connected.
>>>
>>> He left a few untransfered to DVD for me and now I am stuck with Mini
>>> DV tapes that I can not get the sound out of. I suspect these were
>>> recorded in 16 bit Audio, because all of the 12 Bit recordings play
>>> back just fine. I have tried in vain using other camcorders and even
>>> messed with every combination of audio setting on the camcorder with
>>> the RCA jacks, but the Audio just does not come through. I have only
>>> tried using RCA jacks, I am not familiar with other technologies.
>>>
>>> If someone can help me figure out how to recover the audio from these
>>> recordings along with the video stream, I would be very thankful.
>>
>> Double check the audio settings on whatever it is you're playing back
>> on. Since the audio on his tapes is in 16-bit 48khz mode, there will
>> only be audio on channels 1 and 2 while 12-bit 32khz mode (even though
>> there is a loss in sound quality this way) can have 4 channels of audio.
>
> I bought 4 different players and had to return each as every time I
> changed the settings either I got no sound or intermittent sound
> playback. Each time I tried this I played them back and made sure the
> cables weren't loose. I just wonder if this is all due to the fact that
> I am using RCA jacks to try and retreive the audio and video from these
> tapes. I am concerned that I may get other recordings like this from
> Mini DV tapes in the future, and that the tapes may not be able to be
> played back because this is a problem with Mini DV technology.
I've recorded audio in 12-bit (accidentally) and 16-bit (intentionally)
and never had "a problem with Mini DV technology". You've got some
settings wrong somewhere, but from your description I can't guess what.
> I have camcorder equipment that can playback 8mm, Digital 8 tapes and
> even VHS C, but I have only experienced this problem with Mini DV. I
> will try the firewire option as someone suggested. I guess it is time I
> got with the times. One thing I noticed is that several camera manuals
> indicate that you can only playback 16 bit audio recordings in 12 bit
> audio mode.In many cases when I tried to change the settings on most of
> these cameras they would not let me change the Audio to 16 bit.
Your last two sentences don't make sense to me.
1. You can't play 16-bit recordings in 12-bit mode. However, AFIK, the
camera will automatically play tapes in the mode they are recorded in,
so you shouldn't have to make any settings.
2. In the record mode, you can only change the settings for future
recordings; as I read your last sentence I wonder if you meant that
while you were in playback mode, you were trying to change the record
mode of an existing tape...
You might mention what camcorder or player you're using so someone who
knows the equipment or has the manual can guide you more accurately.
--
Gene E. Bloch (Gino)
letters617blochg3251
(replace the numbers by "at" and "dotcom")
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