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Activity Forums Blackmagic Design DV capture via sdi, which card.

  • DV capture via sdi, which card.

    Posted by Hawkfinn on August 9, 2005 at 8:15 pm

    Hi,
    I just want to capture video/audio through sdi as a dv quicktime. Would a simple $295 Decklink work? Also do I need to purchase a disk array in order to do this.
    Thanks.
    a

    Luke Maslen replied 20 years, 9 months ago 2 Members · 3 Replies
  • 3 Replies
  • Luke Maslen

    August 10, 2005 at 1:03 am

    Hi,

    Yes, the $295 DeckLink card would do this in a G4 or G5 and can also do many other things. It has a spare SDI monitoring port on it. If you wanted to monitor via an analog CRT monitor, then you might consider the $595 DeckLink Pro which is basically the same as the DeckLink but has a few extras including analog video monitoring output.

    One question I would have for you is why you would want to capture to DV via SDI. If you are wanting to use DV as an offline mode for editing, then that makes perfect sense. However if you already have DV material on tape, then you might as well just capture that via Firewire to avoid decompression and recompression cycles which lead to loss of quality. If you then wanted to output to Digibeta, you could use the DeckLink card in DV bridge mode to output your DV material from a Blackmagic DV timeline as uncompressed SDI ready for the Digibeta.

    You can happily run DV off one disk and even an iPod will do this although I would usually suggest a faster disk such as a standard SATA disk that comes with a G5. Ideally it would be preferable to capture to a seperate disk to the startup disk but, if desperate, you could use the same disk and it should be OK.

    Regards,

    Luke Maslen
    Blackmagic Design

  • Hawkfinn

    August 10, 2005 at 5:09 pm

    Thanks so much. I am trying to make a DV quicktime file of reels for a music editor at work. We use DVcam DSR80 which doesn’t have firewire. As for my home use I would definitely get the higher model. Thanks a lot. Great cards.
    Alvin

  • Luke Maslen

    August 11, 2005 at 7:01 am

    Hi Alvin,

    Your deck has component analog video inputs and outputs and might also have an SDI option. If your deck does have SDI in and out, then you should use that as it is digital and will give you the best quality. This is not to be confused with the QSDI ports which you might find on the deck as this is a compressed digital format which we can’t use as DeckLink cards expect uncompressed video from the deck.

  • If your deck has SDI ports, then the DeckLink or DeckLink Pro cards would be appropriate.
  • If your deck only has the component analog ports, then the DeckLink SP would be the right card as it can capture and playback via analog video and audio connections. It also has a spare SDI monitoring output. You can choose between using 3 cables for component video or one cable for composite video and the composite analog video would even work with a consumer VCR.
  • If you want both SDI and analog connections, then we also offer the DeckLink Extreme card but you might not need that one if you only need to connect to the DSR80.
  • Regards,

    Luke Maslen
    Blackmagic Design

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