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3.5 hrs to output 4.5 minute video?

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  • 3.5 hrs to output 4.5 minute video?

    The title says it. Why on earth would this be? Allow me to dump as many stats as I can think of in hopes it will provide enough info for an educated response:

    Hardware: iMac 2.8 GHz core i7

    Camera: Panny HPX250

    Footage: AVC Intra50, 720pN, transcoded/optimized to AppleProRes 422 upon import to FCPX.

    Software: FCPX 10.0.9, Compressor 4.0.7

    I outputted to same ProRes 422 codec as was the source footage. Footage resided on different drive than output destination. Everything had been rendered prior to output. So I can't imagine what else I could do to speed up the output. Am I wrong to be appalled at a 3.5 hour output time for such a puny video?

  • #2
    Output to what kind of drive, connected how? What kind of drive was the source video on and how was that connected?
    Last edited by Zwick; 08-12-2013, 01:12 PM.
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    Eric Peterson (AKA, "Zwick")
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    http://www.ericnp.net

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    • #3
      Firewire 800 out of iMac to a daisy-chained FW 400. That is, footage resides on the daisy-chained FW 400 drive and the outputted file was being deposited on my onboard system hard drive.

      Now before we say our "ah-hah"s let me also report that while this über-lengthy output was like-to-like, codec-wise, I also did a native FCPX down-and-dirty "share" output for Apple devices--which I would think would take forever with all that compression--and I had a .m4v file in like a minute and a half; all hardware configurations identical.

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      • #4
        Take the source file to the internal SATA drive and output to the same and see what happens.
        FW 400 is a pretty dead data transfer at this point. There's a reason for not having a FW 400 port on your iMac. I'd seriously consider moving to Thunderbolt.
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        Eric Peterson (AKA, "Zwick")
        Person in charge
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        http://www.ericnp.net

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        • #5
          I'll try that, tho isn't there some proscription against having your source files on your system drive?

          I'd love to have Thunderbolt but doesn't that mean replacing the entire iMac?

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          • #6
            If you want to troubleshoot your transcoding issue then I recommend taking another route. 4.5 minutes of 720p video being transcoded on your system drive isn't gonna break anything.
            I did a cursory search on 2.8 GHz, i7 via Google, I'm not really sure what iMac that is but what came up said 1 Thunderbolt port. If it's "mid-2010" then no Thunderbolt. I'd need a model number.
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            Eric Peterson (AKA, "Zwick")
            Person in charge
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            http://www.ericnp.net

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            • #7
              It's a late 2009, 27-in. Model A1312 according to Mactracker.

              Also: 16 GB RAM. ATI Radeon HD 4850 512 MB graphics.

              Definitely no Thunderbolt.

              I still don't understand how it output in a minute and a half when using the Share to Apple Devices route.

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