Latest post Mon, Aug 10 2015 2:17 AM by DStone. 7 replies.
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  • Fri, Jul 31 2015 11:41 PM

    how to export effects created in Avid for Resolve 4k color?

    Hi,

    We have Red 5K footage and I edited on Avid DNxHD 175X transcodes imported into Avid. I have hired a colorist who colors in Resolve, he is meant to color in 4K/5K. The net seems to be littered with articles about how to relink back to R3d files, so I already understand that part of the process and have tested it as well.

    What I can't seem to understand (and I am getting conflicting advice from people on how to do this, including the colorist) is how to export the effects such as 3D warp, motion effects etc from my timeline.  According to the colorist, Resolve doesn't ingest these effects properly, so I must "export the effects" from the timeline and "import them back" on my Avid timeline in order to bake-in the effect, BEFORE I export the AAF with the consolidated R3D files for him. This confuses me, since if I export the clips with effects, from my Avid, what format would I export them out in? I can't export them out as R3D files. If I put any kind of compression during this export/import process (such as DNxHD 175X), then how will the colorist use the R3d files to color these particular clips? Besides, if I even try to apply the effects stright on the R3d files, by linking R3d files in my timeline, my computer grinds to a halt; I dont seem to have enough horsepower to edit on linked R3d files.

    When I brought up this question to the colorist, he suggested I export from my Avid timeline to ProRes 444. But, my project is a 1920 X 1080 project set for offline edit and I can't see that export option as available to me. Are there any lossless formats that I can export those clips in?

    Maybe I am missing something small, but the correct answer to this problem might also give me the answer as to what format I should export for the VFX specialist who has asked for the clips he needs to work on  transcoded to .DPX RedLog colorspace. I don't see how to export that format from Avid either. Should it be something that the colorist must export from Resolve once he colors the clips in 4K?

    Help is greatly appreicated.

    Thanks much,
    Swati

     

  • Sat, Aug 1 2015 1:13 AM In reply to

    • gumbaedit
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    Re: how to export effects created in Avid for Resolve 4k color?

    Some effects will go across, like 3d warp, some will not.  You have to test what does and doesnt and adjust your workflow accordingly.  When at all possible, use 3D warp to do any resizing.  Also, when you import the AAF, be sure to check the "use reszing information" box.

    6 core Late 2013 MacPro 3.0 gHz, 16 gigs RAM, MC 8.8.5 on OSX 10.12.4, DNxIO, Flanders CM250, BMD Desktop Video version 10.9.1 [view my complete system specs]
  • Sat, Aug 1 2015 4:47 AM In reply to

    Re: how to export effects created in Avid for Resolve 4k color?

    Thanks  gumbaedit. It still leaves the main problem, which is what format to export from Avid that is lossless and thus can be imported back & the effect burnt-in, letting the colorist color the clips with effects on them in 4K/5K. 

     

  • Mon, Aug 3 2015 3:57 PM In reply to

    • DStone
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    Re: how to export effects created in Avid for Resolve 4k color?

    I'm not particularly familiar with Red, but I have seen the workflows for rroundtripping to Resolve. Why not just relink to the original R3D files and export the AAF (which will then reference the Red files)? There's no transcoding involved at all.

    BTW, just for general info:

    The following effects are supported by AAF:

    Video Effects

    • Video Dissolve
    • SMPTE Video Wipe
    • Video Speed Control
    • Video Repeat
    • Video Flip
    • Video Flop
    • Video Flip-Flop
    • Video Position
    • Video Crop
    • Video Scale
    • Video Rotate
    • Video Corner Pinning
    • Alpha with Video Key
    • Separate-Alpha Key
    • Luminance Key
    • Chroma Key


    Audio Effects

    • Audio Gain
    • Audio Pan
    • Single-Parameter Audio Dissolve
    • Two-Parameter Audio Dissolve

     

    Anything not supported is simply ignored. Note that there are also constraints (e.g. AAF can't handle a squence where a transition contains a composite, not that that's a likely occurance in any case).

    DIY quad core I7-4790K, 32Gb, NVidia RTX 2060 Super 8, Win 10 Pro, MC (generally the latest or the one just before) [view my complete system specs]

    Dave S.

  • Mon, Aug 3 2015 4:30 PM In reply to

    Re: how to export effects created in Avid for Resolve 4k color?

    Hi DStone,

     

    I am familiar with the re-link to R3D files, so I am certainly going to do that for all the clips that don't have effects on the, What I am trying to figure out is how to export effects so they are not lost in Resolve? Since Resolve can't import all the effects, my colorist suggests exporting and importing the clips with effects into Avid in a high res format, so they are baked in to the AAF file and thus Reoslve will accept them. My question is what export format would I need to export/ import these clips with effects? I am working on Avid DNxHD175 X but the Colorist would be coloring the original R3D files.  For the clips with effect, I need to be able to export very high res files and import them back into Avid as high res - what format would this be so the exported clips can be as close to the RED quality as possible?

    Does this make sense?

     

    Swati

  • Tue, Aug 4 2015 2:22 AM In reply to

    • DStone
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    Re: how to export effects created in Avid for Resolve 4k color?

    I think the best option is to relink the clips using 4K DNxHR 444 or DNxHR HQX and export those. Of course, rendering the effects could take a while, depending on your system. You should be able to round trip these through Resolve.

    DIY quad core I7-4790K, 32Gb, NVidia RTX 2060 Super 8, Win 10 Pro, MC (generally the latest or the one just before) [view my complete system specs]

    Dave S.

  • Tue, Aug 4 2015 6:27 PM In reply to

    Re: how to export effects created in Avid for Resolve 4k color?

    Thanks DStone.

    Is DNxHR 444 to Windows what Pro Res 444 is to Mac?

    I tried to render one of the effects to DNxHR 444, the rendering time seemed to be okay. But, when I try to test the round-trip, it seems like my computer can't handle "linking" to these DNxHR444 clips. I must "import" them back on the timeline. Looks like the "proxy" feature in Avid MC 8.3 doesn't apply to linked DnxHR files.  Much heavier linked RED files on my timeline seem to work without issues. On the other hand, linking to DPX files rendered via AMA File Export seems to be much smoother. 

    Is there any downside to using DPX files compared to DNxHR 444s for my effects / color/ VFX needs ? Is one better than the other? The final output is being prepared for cinema (festivals etc)

    Thanks

    Swati  

     

  • Mon, Aug 10 2015 2:17 AM In reply to

    • DStone
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    Re: how to export effects created in Avid for Resolve 4k color?

    DPX is a good format to use. The file sizes will be larger, but the format is essentially lossless. I prefer DNxHR for the smaller file size and it's visually similar. But if DNxHR isn't working in your workflow and DPX is, use that instead.

    DIY quad core I7-4790K, 32Gb, NVidia RTX 2060 Super 8, Win 10 Pro, MC (generally the latest or the one just before) [view my complete system specs]

    Dave S.

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