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Activity Forums Adobe After Effects AE/Media Encoder not letting me render 4K footage

  • Bret Hampton

    April 15, 2022 at 2:35 am


    AVI files are old school and huge. Do you need it specifically for some reason? Most of us use Avid DnX and Apple ProRes, with H264 for final viewing files.

    Uncompressed files are virtually unplayable on most systems. Most of us use them for archival purposes.

    Let me know what your client needs and I or others can help.

    As is I don’t think you can export the way you want.

  • Chris Wright

    April 15, 2022 at 5:11 am

    what is the video codec you are trying to export with? avi is just a container. some older codecs don’t support large dimensions, other just need to change their profile to 6.1 or higher.

  • James Harris

    April 15, 2022 at 5:35 pm

    Hello Bret,
    I am uploading a 3 min 3D animation footage to youtube.
    Since youtube runs it’s own compression, I am trying to upload an uncompressed footage to avoid having 2 compressions (one by media encoder and one by youtube) which will decrease the quality of my footage tremendously.

  • James Harris

    April 15, 2022 at 5:36 pm

    I just need to upload an uncompressed footage to youtube so that it can run it’s own compression.

  • Chris Wright

    April 15, 2022 at 9:27 pm

    we are still unsure what type of avi codec you are trying? rgb-yuv uncompressed? i’ve had good luck with the free huffyuv codec you can download for free, but honestly, full RGB uncompressed is borderline too much unless you want to upload hundreds of GB/sec. Any 4:4:4 or even 4:2:2 10 bit wavelet or dct codec should be fine. If you want a little trick, try Cineform since it uses wavelet and so does not compress as macroblocks in Discrete blocks.

  • James Harris

    April 15, 2022 at 11:19 pm

    I chose V210 but UYVY is fine as as it keeps everything uncompressed.
    Can you please tell me what are my options in media encoder?

  • Graham Quince

    April 16, 2022 at 10:06 am

    Hi James,

    I’d suggest rendering using one of the Apple ProRes codecs. This will give you a very high quality lossless video and has the benefit that should you need to compress the video, you’ll be able to render from this video, instead of re-rendering your comp.

    I did notice from your other post though that this is intended for YouTube. I’d suggest rendering out using the H.264 codec set to Match Source, High Bitrate – YouTube is going to compress your video anyway and this option has always been successful for me.


  • James Harris

    April 16, 2022 at 6:10 pm

    Ok but how can I obtain the Apple ProRes codec? I don’t see it in the drop down menu.

  • Graham Quince

    April 16, 2022 at 6:31 pm

    Are you rendering in Media Encoder or After Effects? If AE, try selecting QuickTime, then go into the settings for it, it should be there.

  • James Harris

    April 16, 2022 at 11:52 pm

    My project is in After Effects but I never use it to render the final footage I always use encoder for this.

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