Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Activity Forums AJA Video Systems Kona LHe downconvert 1080 to 720 ??

  • Gary Adcock

    January 13, 2008 at 3:33 pm

    [Christopher S. Johnson] “because the card can down-convert from 1080p all the way down to SD in perfect 10 bit, it would seem like less of a stretch to down-convert from 1080 to 720 and would not require the serious up-converting hardware of the Kona3″”

    if a cross conversion were truly a downconversion you might be partially correct.
    What about the conversion from interlace to progressive? ( you do realize that 1080 is not P but Psf)

    There is only so much programing chips can hold, without increasing the cost of the product.

    gary adcock
    Studio37
    HD & Film Consultation
    Post and Production Workflows
    Inside look at the IoHD

  • Christopher S. johnson

    January 13, 2008 at 5:43 pm

    Gary said, “( you do realize that 1080 is not P but Psf) ”

    Actually, I know of the name, and I used it to capture HDCAM footage the other day, but no, I do not know the meaning of Psf. Enlighten me.

    So, for another project of mine, using a Kona LHe, a documentary, I have captured

    – About 40 reels of Varicam as native DVCPRO-HD 720p 23.98

    – About 20 reels of F900 HDCAM to standard ProRes 1080 23.98Psf

    Right now, for the edit, I am using the DVCPRO-HD 720p 23.98 Easy Set-Up and Sequence. This allows the Kona control Panel to put up with displaying both formats from the Viewer.

    If I was in the ProRes 1080Psf world, the 720 stuff would play in a Sequence because of FCP 6.0.2 Open Timeline, but then the viewer would NOT display the 720 stuff.

    Rendering each footage in each other’s timeline/sequence looks OK, but there is some fine aliasing. I haven’t tried the high quality scaling settings in the 720p Sequence yet.

    What would you do with those two formats already captured and a Kona LHe? What are the strengths in Final Cut Studio with this card that would make the 1080 or the 720 Sequence a better meeting ground for these two formats? Oh and we may very well do a film-out.

    Thanks for any info. I’ve been using FCP since version 1.0 in 1999 and its always good to glean new perspectives. Its a been a long strange trip.

    -Christopher S. Johnson

Page 2 of 2

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy