The primary reason for grainy footage is having too little light available when you shoot your video.
You’re much better off copy/pasting the video into AE or replacing your clip with an AE comp so you don’t compress the footage before removing the noise. I totally missed that as I was focused on the work done in AE and not the overall workflow. That is actually not a good workflow as it compresses the video and loses you quality right off the bat. Note: I start the video out by showing how to export the clip from Premiere Pro. Fortunately, it is really easy to remove noise from your video in Adobe After Effects – all without plugins! There are a number of different reasons why your footage may have come out low quality, grainy and full of noise.
