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ProRess 422 vs ProRess 422 (HQ)

5593 Views 4 Replies Latest reply: Jul 7, 2008 6:22 AM by Jeff A. Harrell RSS
Mike Cole1 Calculating status...
Currently Being Moderated
Jul 2, 2008 3:16 PM
I'm looking to export my HDV project out of FCP using one of the ProRess options to take into compressor for an SD DVD encoding. I've tried HDV 1080 30P but takes really long to encode in comp. I've tested the Proress and was a lot faster to encode but not sure what the difference between the Proress and (HQ).

Thanks,
Mike
G5 Dual 2, G4 1.25
  • David S. Level 7 Level 7 (20,630 points)
    Currently Being Moderated
    Jul 2, 2008 3:39 PM (in response to Mike Cole1)
    The difference is bit rates primarily.

    Normal quality is targeted at 145 Mbps, and high quality (HQ) is targeted at 220 Mbps
    MacPro 2.66Ghz 5 Gbs RAM, Mac OS X (10.5.1), NVIDIA GeForce 7300 GT Video Card 256 MBs RAM
  • gogiangigo Level 6 Level 6 (8,035 points)
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    Jul 2, 2008 3:46 PM (in response to Mike Cole1)
    Mike,
    use just ProRes (SD), ProRes HQ suits best high end HD formats.
    Remember you can just render your timeline to ProRes:
    FCPmain menu>FinalCutPro>User Preferences>Render Control>Codec>Apple ProRes. Then send to Compressor.

    G.
    MBP+MacPro 2x3Ghz Intel Xeon; 4GB RAM; ATI X1900 512MB;FCPstudio2, Mac OS X (10.4.11), dish washer
  • Jeff A. Harrell Level 3 Level 3 (550 points)
    Currently Being Moderated
    Jul 7, 2008 6:22 AM (in response to gogiangigo)
    Just to clarify something, the difference between ProRes 422 and ProRes 422 HQ has nothing to do with SD versus HD.

    ProRes 422 is a variable-bit-rate compressor. The regular version of the compressor will produce Quicktimes with a maximum data rate of 145 Mbps at 1920x1080x60i. The HQ version has more headroom, giving you up to 220 Mbps at 1920x1080x60i.

    If you use a smaller raster (like 1440x1080, or even 720x480) you'll get smaller data rates. If you use a lower frame rate (like 23.976) you'll get smaller data rates. In both varieties, ProRes is a use-what-you-need compressor. A typical clip of very high complexity (a 3D scene with lots of particles and digital grain) on my system tops out at 160 Mbps, because it's 1440x1080x23.976.
    Mac Pro, 8x2.8 GHz, 8 GB, Mac OS X (10.5.2)

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