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How to Find And Add Sound Effects to a Video With Only 6 Steps

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Last Updated: Jan. 20, 2020

Summary: FlexClip provides a large library of sound effects, you can search the genre/categories of sound effects there.

In this blog, I'll also show you how to find and add sound effects to a video with only 6 steps, and give you some suggestions about how to merge the sound effect with the video well.

Part 1: Why Add Sound Effects to Videos

The special sound effect, “bing bing bong”, from Donald Trump on YouTube brings 66,639 views for the 49-second video. “Pika Pika Chu” from Pikachu has become well-known lines around the world.

trump & pikachu

Image board: “bing bing bong”, from Donald Trump and “PiKa Pika Chu” from Pikachu

As you can see, an appropriate sound effect makes the audience feel naughty, nostalgia or laughing. Sound effects not only narrow the gap between you and your audience, but also emphasize some portion of clips, so viewers can understand the movie/video more profoundly.

You may ask, what should I do to add sound effects to a video? Which tool should I use? And is there any way to modify it?.

Part 2: How to Add Sound Effects to Your Video?

There are many free video editors like FlexClip offers you a large amount of sound effects and now just following the 6 guide steps adding sound effects to make your video more engaging:

In my example, I added the sound of wave named Ocean 4 in a video (the girl is dancing along the seaside) to show you guys how it works out in details. Here is the exported video.

Depict video: Add a special sound to your video

How to Add Sound Effects to Your Video?

Starting by login FlexClip. Create a new project, you can either choose a template or upload your own videos to to add and edit sound effects.

create and start

Image board: Create a new project and start

Step 1 Import Your Video Footage

Before you search the sound effects you want from sound and music library, you need to upload your video clips to the storyboard of FlexClip.

add footage

Image board: Upload your video clips on the story storyboard

Step 2 Find and Add Sound Effects to Your Video

FlexClip provides a sound library, supporting thousands of sound effects, such as crickets, birds, bees, traffic, doorbell, alarm, raining, wind, and cartoon funny theme.

Click ‘Add Music’ jumping to sound library, and type what types of sound effects you want in the search bar, find it! Then, click ‘use’ to add the sound effect.


Image board: Find your special sound effect in the sound library

If you have your own sound effects on your computer, FlexClip also allows you to upload local sound effects in various formats such as AAC, FLAC, M4A, MP3, OGG, and WAV format. Just jump into sound library and click ‘browse my file’ and use it.

upload local sound

Image board: FlexClip video editor enables you to upload your local sound effects and music


  • Record the Sound by FlexClip Online Voice Recorder
  • If you shot a documentary, or prefer original sound effects, just press and hold the ‘microphone’ button -- FlexClip recorder can help you to record your live sound effects. By default, the recording sound effect will be added in the footage.
  • record your sound effect

    Image board: Record sound effects by FlexClip recorder

Step 3 Edit Your Sound Track

After add a sound effect to the video, you may wanna modify its length or position, FlexClip allows clicking the ‘edit’ button to trim your sound track.

edit sound track

Image board: Edit your sound track

Then, you can choose which period of time you want to use the sound effect. Listen and watch the video preview, and do some adjustments until it achieved what you want.


Image board: Edit your sound effects track

Note If the length of your sound effect exceeds the length of the video, don’t worry! by default, FlexClip will loop the sound effect and merge the audio with your video

Step 4 Preview

Listen and watch your video preview again to make sure your sound is right.


Image board: Preview your video

Step 5 Export New Video With the Sound Effects

Click the button of ‘Export Video’ on the right top, then select which resolution you’d like to export (If you wanna have a final change, click the ‘×’ to cancel and edit the video again).


Image board: Export your video, and select the resolution


  • How to merge the sound effect with the video perfectly?
  • 1. If you want to merge your sound effects with the video perfectly, you need to make some stress tone/beats fit well with your important action or stall.
  • 2. The sound effect you chose should suit the story and the style of your video.
  • 3. Learn to control the pace. Figure out where the sound effects should start and where it needs to stop.
  • 4. Learn more on how to do sound transition well. When you use the different sound effects in different footage, considering how the sound effects can transit naturally.

Bottom Line

If you wanna find your special sound effects like animal sound, movie sound, or city noise, check out FlexClip sound library, it never disappoints you with a big data of the sound library. Follow the mentioned tips, your video can sync with a very smooth sound effect and become unique and stunning!

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