Sequence Renders: What & Where?

Suppose you added an effect to the timeline and as a result it shows a red “Unrendered” (or “Needs Rendering”) line above it.  You press Command-R (say) and rendering happens and now you can play it in real-time.  But what exactly is this rendering?  What format is it in and where does it go, i.e. what file(s) in what folder(s) ?

  •  The rendered file appears in a project-specific subfolder of the Rendering folder of FCP’s Scratch area.  In my case I defined the latter to be on the RAID.
    • Location was: [RAID_ProAVIO/App-Specific/Final_Cut/ FCP_Scratch/Render Files/Voda 2009 Estab 001/]
    • Example file name is: “Sequence 1-WP1-00000001
  • The coding format is ProRes 422 – Standard, not High Quality (which would be overkill).  This is good news!
    • VideoSpec displays its FourCC code to be “apcn”
    • The rendered file’s bitrate, according to VideoSpec, is an average of 123Mbps, around four times that of the HDCAM EX high-quality mode (35Mbps).  Nevertheless a great reduction on the uncompressed bitrate (around 1.5 Gbps) and broadly comparable to Convergent Design’s 100Mbps, judged by some to be virtually indistinguishable from uncompressed quality.  So it bodes well.

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