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Therefore, when it comes to remove background noise from video, we're talking about getting rid of white noise from video. They're difficult to be eliminated from video, for they lack continuity and regularity. The rest noise includes people talking, birds chirping, trumpet, whisper, doors slamming, etc. They have something in common: constant, consistent and predictable.
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White noise contains ambient noise, hum, rumble, buzzes, etc. In general, the noise that keeps certain frequency (aka white noise) can be easily removed from video. Yet, here comes the question: can any type of background noise be removed from video? The answer is negative. No matter which, the background noise causes interference to your video and you just wanna remove the unwanted sound pollution from video. Generally, this background noise is resulted from your device microphone or the external noisy environment. Just play around with it enough so that your clip sounds the way you want it to. Once you’ve successfully removed the noise, send the clip back to Premiere by hitting “Command+S.” This will place the altered clip right back into your timeline as it was before.You're not strange to this situation: after you record a 4K video using your GoPro or iPhone X and playback it on your device, you will find that there is annoying background noise in your video. You can increase or decrease the amount of noise reduction, or play with the decibel levels. This is where you’ll begin to play with the reduction of the noise. Now, click anywhere on the timeline, then go back up to Effects>Noise Reduction/Restoration, and hit Noise Reduction(process). That way it can remove the sound from the rest of the clip, but not the dialogue. What this does is take the piece you’ve selected and identifies background noise.
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Now go to Effects>Noise Reduction/Restoration>Capture Noise Print. To do this you can just click and drag out the section of the clip you want. Once you’ve opened Audition take the “Time Selection Tool” and select a piece of the track that is just room tone (no dialogue). So instead of working in After Effects, this time we’ll be moving our intended clip over to Audition. If you’re still having trouble playing the clip in Premiere Pro, export the clip from After Effects then bring it back into Premiere. This effect is render-heavy so you might want to render out once you’ve done this (depending on how long your edit is). Once you’ve done this, the composition will automatically sync in Premiere Pro, so you can keep editing. This is where you’ll be able to increase the “de-noising” of the clip by increasing the “Passes.” I suggest playing around from here to see what looks best for your clip. Then, go to “Effects” and select “Remove Grain.” Drag this onto your composition and then go to the “Effects Controls” for the “Remove Grain” effect. So, select the clip you want to work on, right click and hit “Replace with After Effects Composition.” This will open up After Effects. So for this quick fix we’ll be working in After Effects. Here are a few simple steps to follow for correcting noisy audio and video in Premiere Pro. The magic of filmmaking always lies behind the scenes in post-production. Though you can’t make the footage picture perfect, you can improve the quality of video and audio enough to where the audience won’t notice it. Whether you’re in the business of editing or shooting, noisy footage is one of the most frustrating roadblocks you can encounter in your workflow.
VIDEO NOISE REDUCTION IMOVIE HOW TO
Looking for audio clean-up tips for Premiere Pro or After Effects? Here’s how to fix noisy audio and video in no time at all.