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How to Add Free and High-quality Sound Effects to Your Videos Online

Last Updated: Oct. 19, 2021

Adding sound effects to a video is a crucial step for video making.

Sound effects like birds chirp ambience, distant dogs’ barking, footsteps on bricks, and the rustling of leaves, and machine guns, etc. will instantly evoke viewers’ emotional responses and heighten the atmosphere for a particular scene.

In this post, we will offer you a fantastic source for free and high-quality sound effects and walk you through how to add dramatic sound effects to your videos online using FlexClip and iMovie.

Add Free Sound Effects to a Video Using FlexClip

Here’s What You Will Learn:

How to Add Free Sound Effects to a Video Online Using FlexClip

Well, in actual video or filmmaking, most of the high-quality sound effects are not recorded on the spot. Instead, they are made by professional Foley artists and curated and sold by companies such as Storyblocks, Adobe Stock and Shutterstock, etc.

The most common way to add sound effects to your video is that you either spend time downloading license-free sound effects or pay for commercial sound effects from audio stock companies. However, both methods are time-consuming and not that economical to many.

So, a flawless solution we recommend is using FlexClip, a free and feature-rich online video maker. And here are our reasons:

Versatile and user-friendly FlexClip video maker

  • Enjoy Free Access to 10,000+ High-quality Sound Effects. By collaborating with Storyblocks, FlexClip integrates Storyblocks’ stock assets into its online video editor. In other words, you can directly search for growing studio-made sound effects within FlexClip to match your video project. Besides, HD images, videos, and music are available.
  • Add Sound Effects and Edit Videos in One Place. Apart from a huge stock of sound effects, you may easily use FlexClip’s designer-made text animations, video filters, transitions and trimmers, dynamic elements, picture-in-picture features, and customizable video templates, etc. to edit and elevate your videos in just a few clicks.
  • Enjoy 2 Editing Modes. Both storyboard and timeline editing modes are available, making FlexClip easy to use for all users.
  • Easy Share and Download. You can directly share your video projects to your local PC, YouTube channel or save them to your Dropbox. Besides, FlexClip is watermark-free and there is no software to download, and GIF export is also available.
  • Basic Way to Add Sound Effects to a Video Using FlexClip

    Upload your video footage in the media library. If you don’t have one, you can click on “Stock Media” > “Video” > search for a stock video > drag the video to the timeline.

    Upload video assets and drag them to the timeline

    Upload video assets and drag them to the timeline

    You may also use the “Fit to Screen” tool to expand the video for easier checking.

    Step 2
    Add Sound Effects to Your Video

    Go to “Stock Media” > click on “Audio” on the drop-down menu > enter keywords of sound effects in the search bar > preview and add it to the media library > drag the sound effect on the timeline > use “Fit to Screen” tool and drag the slider of the audio to match the length of the video.

    Add the sound effects from the stock audio to the video

    Add the sound effects from the stock audio to the video

    Bonus Tips
    To add the sound effects to a video without feeling abrupt, you can manually adjust the duration for “Fade in/out” effects or change the volume of the sound effects.
    Use fade in/out tool to blend sound effects naturally

    Use fade in/out tool to blend sound effects naturally

    Advanced Techniques to Add Sound Effects to a Video Using FlexClip

    Having introduced the basic way to add sound effects to a video, now let’s check two more advanced and practical techniques to add sound effects to your videos.

  • Add Multiple Sound Effects
  • In some cases, you may add multiple sound effects to add dimension to the video. For example, for a historical rocket launch, you can combine “inspiring epic flight” sound effects with “cinematic rocket countdown”.

    A demo of adding multiple sound effects to a video using FlexClip

    All you need to do is find two sound effects in FlexClip’s video editor and add them to the timeline and drag and drop the slider to trim their duration respectively.

  • Add Sound Effects for a Particular Frame in a Video
  • Very often, we wanna add sound effects particularly for a specific frame in a video. Let’s say, you need to add a pop-up sound as you introduce a new book in a video.

    To do so, firstly upload your video files to FlexClip> move the playhead to find the particular frame you want the “Pop up” sound to appear > look for the “Pop Up” sound effects from FlexClip’s stock assets > drag and drop the sound effect to the timeline and adjust is duration. Done.

    Add sound effects for a particular frame in a video

    Add sound effects for a particular frame in a video

    Bonus Tips: Add Free Sound Effects to a Video on iMovie

    Well, not many desktop video editors have built-in sound effects for video editing. An exception is iMovie. If you happen to be a Mac user, iMovie is a workable alternative to adding basic ambient sound effects like “Ocean Surf” and “Dog’s barking” to your video. However, the number and categories of pre-installed sound effects are limited.

    Use iMovie’s pre-installed sound effects to add to your videos

    Step 1
    Launch iMovie and Import Your Video
    Step 2
    Add the Pre-Installed Sound Effects to Your Video

    Go to the “Audio” tab > click “Sound Effects” on the left sidebar > hit “Effects” > enter “Keywords” in the search bar to find the ideal sound effects like “Ocean Surf” or dogs’ “barking” > drag the sound effect to the timeline. Then you can drag the middle line to adjust its volume or use the slider to trim the sound effects.

    Now, It’s Your Move

    Adding dramatic sound effects to a video is as important as choosing cinematic BGM for your video. With FlexClip’s royalty-free and high-quality sound effects library and its versatile video editing tools, you can make your video come to life in a breeze. So, start adding sound effects to your videos by FlexClip now.

    Make a Video for Free with FlexClip Now
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