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Activity Forums AJA Video Systems Just a small resolution humbug with P2 !!

  • Just a small resolution humbug with P2 !!

    Posted by Richard Chin on January 10, 2007 at 4:10 pm

    I know there is probably a simple reason for this one but I could find nothing in the archives.
    Take a look at this scenario.

    I have some P2 footage shot at 1080i from the HVX200 on my LHe system.
    My external monitor displays the 1920 x 1080 image and the 2nd monitor shows the downconveted SD image .
    However item properties on that clip states that it is 1280 x 1080. So which is it? 1920 x 1080 or 1280 x 1080.

    Secondly if I export this clip for compositing on a PC (as animation codec) which resolution should I use?.

    Any thoughts?!
    Richard

    Richard Chin replied 19 years, 3 months ago 2 Members · 2 Replies
  • 2 Replies
  • Mark Maness

    January 10, 2007 at 5:20 pm

    [Richard] “However item properties on that clip states that it is 1280 x 1080. So which is it? 1920 x 1080 or 1280 x 1080.”

    That’s because Panasonic’s DVCProHD codec is 1280×1080, just like Sony’s HDV codec using 1440×1080. AJA cards interpolate the footage to its full sized resolution. The ONLY way to get 1920×1080 from a Panasonic camera is to capture the footage live using an Uncompressed codec, not even using the P2 cards in the camera.

    There’s nothing wrong with the resolution at 1280×1080. As a matter of fact, you’d be hard pressed to tell if the footage is 1920×1080 Uncompressed or 1280×1080 DVCProHD.

    [Richard] “Secondly if I export this clip for compositing on a PC (as animation codec) which resolution should I use?.”

    ALWAYS export using the codec you are editing. The footage will not get any better exporting to Uncompressed.

    _______________________________

    Wayne Carey
    Schazam Productions
    http://www.schazamproductions.com

  • Richard Chin

    January 10, 2007 at 7:58 pm

    Ok thank you, I knew there was a simple enough reason for this.

    On the export to PC, I must use another codec other than DVCPRO HD because of the whole licensing thing that prevents PC’s from reading mac DVCPRO HD Files. It was explained in more detail in a previous post in here somewhere.

    Thanks again

    Richard

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