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Unicycle Rob
Unicycle Rob
Known Participant
April 22, 2019
Question

Rendering File Size Issues: Not making an sense to me...?! (With Alpha)

  • April 22, 2019
  • 1 reply
  • 455 views

I have a file I need to render with Alpha, but the key is to have it as small as possible keeping the alpha and the quality. Currently I have it rendered at QuickTime Apple ProRes 4444 with Alpha, which seems to be the smallest file size I can get with alpha.

But logically thinking how AE compiles everything to put the video together, you would think if you first render your file as a PNG Image Sequence with Alpha and then bring it back in and render it again as a QuickTime Apple ProRes 4444 with Alpha, the file would be smaller. Well in many cases yes! But in other cases no... but why!?!? This is what I don't understand.

I have a slight suspicion it could be related to how some of these projects use opacity's where things fade out, where some don't. Meaning that opacity's use more information, but I could be completely wrong.

Please help! Thanks!

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    1 reply

    A
    A.I.1
    Legend
    April 29, 2019

    If you (and client if applicable) can use quicktime+jpeg2000 (eg. in CC 2017 but not  CC2018 and later) that should give good enough quality and have a quality slider+likely be lower file size than some other methods (may be smaller than png sequence+alpha or possibly pro res with alpha & goprocineform with alpha).

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