Hdv playback with normal dv deck?

[Toke Lahti]

Considering that hdv bitstream has same rate than dv bitstream, is it possible to capture hdv from tape to pc/mac through firewire from regular dv deck?
Anybody tried?

[Chris Hurd]

No, this is not possible. The DV deck won't know what to do with the HDV data.

[Toke Lahti]

<<<-- Originally posted by Chris Hurd : No, this is not possible. The DV deck won't know what to do with the HDV data. -->>>
So you have tried?
What dv deck really has to understand about the stream?
If it would have same dataframes than dv stream?

[Mike Tiffee]

The only thing HDV has in common with DV is
1. It uses the same tapestock

[Barry Green]

Toke, it doesn't work. Same way that if you put an Apple 5.25" disk in an IBM 5.25" drive, it won't know what to do with it. Same media but completely incompatible formats.

I've got a JVC DV3000 deck and a few FX1 tapes, and it basically thinks the tapes are blank. It doesn't know what to do with them.

[Ignacio Rodriguez]

I understand some new Sony palm-sized camcorder, the one with the RGB color filter, native 16:9 and megapixel CCD is in some way HDV-aware. It might be able to play the tape through Firewire... all it needs to do is pass the data through, no processing required.

[Heath McKnight]

I've done it before, but the funniest thing of all is when I record DV footage on a tape with HDV stuff, then play it back in a DV deck and it's nothing when the HDV stuff goes through.

heath

[Harish Kumar]

Hi Ignacio


which palmcorder are we talking about ?
so you mean it would play back the fx1/z1 tapes thro fire wire as if played thro the fx1/z1?

Thanks

[Harish Kumar]

Is it sony DCR - HC1000?

Its ablot 1300$ at B& H. I wonder if it can do the job.

Thanks

[Ignacio Rodriguez]

The Sony model that somebody said was "HDV-aware" or something like that is the PC350. Unfortunatley I have not been able to find the post or article where a user mentioned this. Note though, the fact that it in some way knows that an HDV tape is in the transport does not automatically mean that it will play the HDV data over Firewire. If Sony is stupid enough --surely such a thing has happened before-- the cam will display an error message instead of feeding the data over to the bus.

But we can HOPE the camera plays the HDV tape to the Firewire bus, and we can ASK somebody that has a 350 to try.

Here is a link to an old thread about the 350:

http://www.dvinfo.net/conf/showthrea...r&pagenumber=1

[Heath McKnight]

Thanks, Ignacio!

heath

[Ignacio Rodriguez]

> then play it back in a DV deck and it's nothing
> when the HDV stuff goes through

Heath, nothing on the LCD screen and analog, but also nothing on the Firewire bus? Which cam?

> it doesn't work. Same way that if you put an Apple 5.25"
> disk in an IBM 5.25" drive,

Barry, the camera itself won't know what to do in terms of turning the stream into an image, but it could still spit the data out through the bus if Sony wrote the cam's software right.

Remember when it became possible to read IBM floppies on Apple hardware through the use of AccessPC? So you could copy DOS binaries, even if you could not execute them on the Mac. This would be a similar case.

The trouble with floppies though was CAV (constant angular velocity) versus CLV (constant linear velocity), so Apple had to use more expensive drives that could use both modes. With HDV it's simpler, the tape runs at the same speed and data is written with the same density as with DV.

[Heath McKnight]

When I inadvertantly played HDV footage in a DV deck, I got nothing until the DV footage recorded after the HDV stuff came up.

heath

[Toke Lahti]

<<<-- Originally posted by Heath McKnight : When I inadvertantly played HDV footage in a DV deck, I got nothing until the DV footage recorded after the HDV stuff came up. heath -->>>

I'll ask a bit more specifically:
has anybody tried to capture hdv tape with dv deck/camera?
(Of course playback with analog picture & sound isn't working...)

[Heath McKnight]

Toke,

That's the answer--if nothing shows up, it can't be captured. DV is one type of compression, etc., and HDV is another. It's great that HDV can go onto mini-dv tapes, but HDV can't be played or captured from a normal DV deck.

heath