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Activity Forums Apple Final Cut Pro Legacy Incorrect Pixel Aspect Ratio on export

  • Incorrect Pixel Aspect Ratio on export

    Posted by Liz Gaden on July 7, 2009 at 12:19 am

    I have a DV sequence with DV pixel aspect ratio in FCP. It is mixed media; there are some archival still images, some DV footage, some DV footage with square pixels, some HDV footage. I exported this sequence last week and took it into After Effects, where it exported as a DV pixel Quicktime and all was well with the world. I made some changes to this sequence and I am now trying to re-export, but every time I try the sequence exports as square pixel. I have tried to export the different media elements by themselves, hoping to reveal the culprit for the wrong ratio on export, but each media exports as square pixel. Any ideas why this is happening? I am assuming and hoping it is just a simple setting, but everyone I ask seems stumped by this one.

    Aaron Hinman replied 16 years, 9 months ago 3 Members · 4 Replies
  • 4 Replies
  • Tom Wolsky

    July 7, 2009 at 1:17 am

    First, there is no such thing as DV with square pixels. The DV specification is for CCIR601 pixels.

    What format is the sequence exactly? Check its item properties. What format exactly is the file you brought in from AE? Check its item properties. How exactly are you exporting? QuickTime Movie? QuickTime Conversion? Compressor?

    All the best,

    Tom

    Class on Demand DVDs “Complete Training for FCP6,” “Basic Training for FCS2” and “Final Cut Express Made Easy”
    Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop”

  • Liz Gaden

    July 7, 2009 at 4:09 pm

    First off, I apologize if I was unclear. I have footage that was ripped from a DVD that is now square pixel, not DV footage with square pixel.

    In the end I am taking this sequence into AE and overlaying it on a larger square pixel video as a background, and my final output will be square pixel. I am trying to get this sequence, which is mostly DV footage into the final composition and have it not distorted.

    The current settings in my FCP sequence is:
    Frame Size: 640×496 (I have distorted all my DV footage in the timeline with motion properties to try and maintain the correct visual once in AE, and this distorted size allows me not to lose any edges)
    Pixel Aspect Ratio: NTSC-CCIR 601
    Field Dominance: None (I have de-interlaced all interlaced footage, as it will go with progressive media once in AE)
    29.97
    Apple Pro Res

    I have been exporting through Quick Time Conversion and have tried used Apple Pro Res and Uncompressed, both result with a 640×496, 29.97, square pixel aspect ratio output.

  • Liz Gaden

    July 7, 2009 at 4:57 pm

    I think I was going at this from the wrong way. I have changed my sequence settings to square pixel, and distorted the DV pixel footage to fit. I think this should work for my needs today.

    But it still doesn’t explain why FCP was exporting square pixel footage for a DV pixel timeline…

  • Aaron Hinman

    August 11, 2009 at 1:31 am

    I am having a similar issue inside FCP

    I have a DV clip with the following settings:
    Frame Size: 720×480
    Compressor: DV/DVCPRO – NTSC
    Pixel Aspect: NTSC – CCIR 601
    Field Dominance: Lower(Even)

    and my sequence settings of:
    Frame Size: 720×480 NTSC DV(3:2)
    Pixel Aspect Ratio: NTSC – CCIR 601 / DV (720×480)
    Field Dominance: Lower(Even)
    Compressor DV/DVCPRO – NTSC

    When I export using quicktime Conversion, as a .mov file, I always get a 640×480 video, even though I specify a NTSC 720×480 4:3 file.

    When I export using compressor as a .mov file at 720×480 with a pixel aspect ratio of NTSC CCIR 601/DV, the video comes out as 640×480

    Please help! Any ideas as to what is going wrong?

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