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Activity Forums Apple Final Cut Pro Legacy 12-bit Audio output while capturing DV

  • 12-bit Audio output while capturing DV

    Posted by Richard Tabit on May 14, 2008 at 6:48 pm

    I just bought a little 3CCD Panasonic camcorder (PV-GS320) to use for capturing tapes shot on pro cameras to Final Cut Pro for editing. Unfortunately, I’m getting a notice saying that the “…audio sample rate does not match the sample rate on your source tape… may cause the video and audio to be out of synch….” It turns out the camcorder can be set to record 16-bit audio but it can only output 12-bit through the firewire.

    I was wondering if anyone in the forum had any experience with this and could tell me if it’s worth even worrying about.

    Appreciate your help – Rick

    Richard Tabit replied 18 years, 3 months ago 3 Members · 4 Replies
  • 4 Replies
  • [Richard Tabit] ” It turns out the camcorder can be set to record 16-bit audio but it can only output 12-bit through the firewire.”

    Are you SURE?

    Never encountered that on any little Panny before.

    It would have to TRANSCODE the 16-bit to 12-bit in real-time to accomplish that and I see no reason it would “want” to do that.

    Are you sure the tape is recorded in 16-bit.

    Just asking because I can’t tell from here.

  • Richard Tabit

    May 15, 2008 at 2:12 am

    Hey thanks for responding. Yeah, I thought it was plenty odd too so I called Panasonic and one of their techs checked out their documentation and confirmed it. I still don’t believe it – like you said, why would they want to go through the extra processing – maybe it’s cheaper for them – who knows?

    I will say that the finished capture seems fine so I may not worry too much about it. I do like the camera for off the cuff stuff and family footage. Maybe the pro camera was set to 12-bit recording by mistake.

    Mystery so far… to me anyway.

  • Chris Borjis

    May 15, 2008 at 4:32 pm

    most camcorders come set that way unfortunately.

    I would immediately set it for 16-bit.

    It makes absolutely no sense that it would record 16-bit and pass 12-bit. Sounds like a defect.

    When I encounter 12-bit audio on DV tapes for capture, they are ALWAYS out of synch when checked.

    the workaround is to plug the firewire cable into a canopus 110 A/D box and plug its firewire cable into the mac, transcoding the 12-bit to 16-bit.

  • Richard Tabit

    May 17, 2008 at 1:56 am

    I agree and thanks. I wonder if there’s a disconnect somewhere – something I’m not quite understanding because the final captures have all been in synch.

    Appreciate the responses though – I plan to carry on cautiously. ;>)

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