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DV recording problem

 
 
RickMerrill
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      03-04-2009, 01:02 AM
Recorded DV25 files in 5.1 mode (mistakenly) so the
frame rate was reduced and the results are horrific.

I need to replay the DV25 files back to the camera
OR find some software that will convert them. Any
suggestions?
 
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ushere
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      03-04-2009, 03:04 AM
RickMerrill wrote:
> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
> reduced and the results are horrific.
>
> I need to replay the DV25 files back to the camera OR find some
> software that will convert them. Any suggestions?


please explain? you captured how? 5.1 is audio. 5:1 is default
compression for dv.....
 
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RickMerrill
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      03-04-2009, 05:47 PM
ushere wrote:
> RickMerrill wrote:
>> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
>> reduced and the results are horrific.
>>
>> I need to replay the DV25 files back to the camera OR find some
>> software that will convert them. Any suggestions?

>
> please explain? you captured how? 5.1 is audio. 5:1 is default
> compression for dv.....


Correct: 5.1 audio when it should have been simple 2channel.

The result was to lower the frame rate over 1394 so the sound
is like Mickey Mouse on adrenaline.

Now I need to convert 5.1 to 2-channel audio yet keep it in sync with
the video.

I suppose I can play it back-into the camercorder-tape, then play that
back as 2-channel!


 
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mkujbida@gmail.com
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      03-04-2009, 06:17 PM
On Mar 4, 12:47*pm, RickMerrill <Rick0.merr...@gmail.NOSPAM.com>
wrote:
> ushere wrote:
> > RickMerrill wrote:
> >> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
> >> reduced and the results are horrific.

>
> >> I need to replay the DV25 files back to the camera OR find some
> >> software that will convert them. Any suggestions?

>
> > please explain? you captured how? 5.1 is audio. 5:1 is default
> > compression for dv.....

>
> Correct: 5.1 audio when it should have been simple 2channel.
>
> The result was to lower the frame rate over 1394 so the sound
> is like Mickey Mouse on adrenaline.
>
> Now I need to convert 5.1 to 2-channel audio yet keep it in sync with
> the video.
>
> I suppose I can play it back-into the camercorder-tape, then play that
> back as 2-channel!




There's no reason (that I can think of) why capturing 5.1 would affect
your frame rate.
What camcorder did these files come from and what NLE are you using?

Mike
 
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Flatulent Father Flannigan
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      03-04-2009, 08:39 PM

"RickMerrill" <(E-Mail Removed)> wrote in message
news:gokjv9$nv5$(E-Mail Removed)...
> Recorded DV25 files in 5.1 mode (mistakenly) so the
> frame rate was reduced and the results are horrific.
>


Is the frame rate really reduced or is your playback system having problems
with only the audio decode?

You may want to post a chunk of one of the files somewhere for us to see.


> I need to replay the DV25 files back to the camera
> OR find some software that will convert them. Any
> suggestions?


I guess the tapes are gone? If you have some frame dropouts recordign back
to the caemra won't do much for ya.


 
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Richard Crowley
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      03-04-2009, 09:21 PM
"RickMerrill" wrote ...
> ushere wrote:
>> RickMerrill wrote:
>>> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
>>> reduced and the results are horrific.
>>>
>>> I need to replay the DV25 files back to the camera OR find some
>>> software that will convert them. Any suggestions?

>>
>> please explain? you captured how? 5.1 is audio. 5:1 is default
>> compression for dv.....

>
> Correct: 5.1 audio when it should have been simple 2channel.


The DV format does not support "5.1 audio" that I've ever heard of.
Do you have any kind of reference for this? The only alternate audio
mode for DV that I've seen in the 4-channel one (4 channels @ 12-
bit vs. the "normal" 2-channels @ 16-bit). The 12-bit resolution is
so lousy that nobody uses this mode (except accidentlly, after which
they complain bitterly about it.)

> The result was to lower the frame rate over 1394 so the sound
> is like Mickey Mouse on adrenaline.
>
> Now I need to convert 5.1 to 2-channel audio yet keep it in sync with the
> video.


It is actually *out of sync* now? Or is it in-sync, but at the wrong
pitch (or whatever)?

> I suppose I can play it back-into the camercorder-tape, then play that
> back as 2-channel!


What equipment was it originally recorded on?
What equipment and software was it captured with?


 
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Flatulent Father Flannigan
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      03-04-2009, 09:26 PM

"Richard Crowley" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> "RickMerrill" wrote ...
>> ushere wrote:
>>> RickMerrill wrote:
>>>> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
>>>> reduced and the results are horrific.
>>>>
>>>> I need to replay the DV25 files back to the camera OR find some
>>>> software that will convert them. Any suggestions?
>>>
>>> please explain? you captured how? 5.1 is audio. 5:1 is default
>>> compression for dv.....

>>
>> Correct: 5.1 audio when it should have been simple 2channel.

>
> The DV format does not support "5.1 audio" that I've ever heard of.


May have been 32Khz audio eh?


>



 
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RickMerrill
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      03-04-2009, 09:40 PM
Flatulent Father Flannigan wrote:
> "Richard Crowley" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
>> "RickMerrill" wrote ...
>>> ushere wrote:
>>>> RickMerrill wrote:
>>>>> Recorded DV25 files in 5.1 mode (mistakenly) so the frame rate was
>>>>> reduced and the results are horrific.
>>>>>
>>>>> I need to replay the DV25 files back to the camera OR find some
>>>>> software that will convert them. Any suggestions?
>>>> please explain? you captured how? 5.1 is audio. 5:1 is default
>>>> compression for dv.....
>>> Correct: 5.1 audio when it should have been simple 2channel.

>> The DV format does not support "5.1 audio" that I've ever heard of.

>
> May have been 32Khz audio eh?
>
>
>
>



I have been told that the 4-channel reduces the audio to 32khz
and I need 48khz - so I am Guessing that 5.1 had a similar effect.
[I should not have called it a 'frame rate' change but an audio encodign
reduction.]

What can I find that will let me recover the data?

 
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Richard Crowley
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      03-04-2009, 09:51 PM
"RickMerrill" wrote ...
> I have been told that the 4-channel reduces the audio to 32khz
> and I need 48khz - so I am Guessing that 5.1 had a similar effect.
> [I should not have called it a 'frame rate' change but an audio encodign
> reduction.]


You need to provide us (me, at least) with some reference for "5.1
audio" on DV before I will even believe this is what you have.

> What can I find that will let me recover the data?


Asking again: What equipment was it recorded on?
What equipment and software was it captured with?
Can you play back the original tape on the original equipment?
Are the sound tracks reproduced correctly when you do that?
Barring that, that you may have a sticky problem on your hands.

I strongly suspect that the tape was recorded in 4-channel (12-bit,
32KHz sample rate) mode, and then improperly captured in 2-
channel, 16-bit, 48KHz sample rate mode. Proper equipment
and/or software should not have even allowed this capture to
happen in the first place, so you are starting with an unknown,
undefined, bastard data stream. Hence the only known good
solution is to play back the original tape on the original equipment
and get the capture right in the first place.

And I still don't believe there is any such thing as "5.1 audio"
possible in DV recording. Unless you're talking about some
sort of encoded, matrixed, add-on scheme like this....
http://www.holophone.com/home.html


 
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RickMerrill
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      03-05-2009, 12:23 AM
Richard Crowley wrote:
> "RickMerrill" wrote ...
>> I have been told that the 4-channel reduces the audio to 32khz
>> and I need 48khz - so I am Guessing that 5.1 had a similar effect.
>> [I should not have called it a 'frame rate' change but an audio encodign
>> reduction.]

>
> You need to provide us (me, at least) with some reference for "5.1
> audio" on DV before I will even believe this is what you have.


Parse this:
Mic: ECM-HW1R bluetooth set to 5.1ch CENTER ==>
Camcorder: Sony HDR-HC1 4:3 1394 ==>
Tapeless: FireStore FS4 recording DV Raw.

>> What can I find that will let me recover the data?

>
> Asking again: What equipment was it recorded on?
> What equipment and software was it captured with?
> Can you play back the original tape on the original equipment?


If you "paguntas" the above, you will see there was No Tape.

> Are the sound tracks reproduced correctly when you do that?

I'm about to try that.

> Barring that, that you may have a sticky problem on your hands.

Don't I know it!


> I strongly suspect that the tape was recorded in 4-channel (12-bit,
> 32KHz sample rate) mode,


All the evidence is that you are correct in this.

> and then improperly captured in 2-
> channel, 16-bit, 48KHz sample rate mode. Proper equipment
> and/or software should not have even allowed this capture to
> happen in the first place, so you are starting with an unknown,
> undefined, bastard data stream. Hence the only known good
> solution is to play back the original tape on the original equipment
> and get the capture right in the first place.
>
> And I still don't believe there is any such thing as "5.1 audio"
> possible in DV recording. Unless you're talking about some
> sort of encoded, matrixed, add-on scheme like this....
> http://www.holophone.com/home.html
>


That's what Sony calls it. See above.
 
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