How to Sync Audio with Video on Your PC and Online: 8 Best Methods

When you record video, you can clap two or three times. It helps create visible spikes in the audio waveforms in video editing software, which you can use for a perfect sync much faster. If you did not clap during the recording, there is still hope. In this guide, we'll show you how to sync audio with video with the software you can use on your Windows or Mac, or with the online tools that get the job done right on your browser.

Part 1. How to Sync Audio with Video Offline on Windows and Mac

1. Adobe Premiere Pro

Adobe Premiere Pro has a built-in feature that lets you automatically sync audio with your video. Instead of lining things up manually, the tool analyzes the audio and matches it with your clips for you. The process is so simple that it makes it easy for beginners as well.

Step 1. Import Audio and Video

In the first step, you are going to start by dragging your audio from the library or the device into the timeline. After that, import the video you want to sync with that audio and drag it into the timeline as well. You can place it on a different track so it does not overlap. If you have more than one clip, bring those in too, so everything you want to sync is visible.

Step 2. Organize Timeline Clips

Once the audio and the videos are in the timeline, you can organize them so they are easy to identify. You can change the label color through Edit > Label if needed, so you do not mix anything up.

Step 3. Synchronize Audio with video

After that, drag to highlight and select all the layers you want to sync together, including the audio and all related video layers. With the audio and video layers selected, right-click and choose the Synchronize option.

Make sure Audio is selected since that is the track being used for syncing. Click OK, and the software will analyze the clips and line them up automatically based on the audio.

Step 4. Lock and Review

After the sync is complete, you should see how the layers overlapped.

What you are going to do now is to lock these layers and enable the audio, just in case you need to resync later.

It is recommended to enable the audio rather than delete it entirely. When you play it back, it should be in sync.

2. DaVinci Resolve

If you recorded the audio for your video externally, DaVinci Resolve now has a feature that makes syncing the audio externally with the onboard audio of your camera super easy.

Step 1. Import and Drag to Timeline

In DaVinci Resolve, you grab your video clip and slap it on your timeline. Find the audio clip that you recorded externally. Also, throw in the timeline. You don't have to adjust anything. Just select everything.

Step 2. Auto Align Waveform

When both the audio and video are highlighted in the timeline, right-click on the selected clips and choose Auto Align Clips.

A menu appears showing different synchronization options. By default, it may show timecode, but you need to select the Waveform.

Step 3. Sync Audio with Video

Once the waveform is selected, click Sync, and the process is done.

When you play it back, everything lines up correctly. The audio is set up properly, and the sound matches the video.

Step 4. Set Auto Align Keyboard Shortcuts

To make this faster, especially if you sync audio with video often, go to Keyboard Customization.

Search for Auto Align, then click the plus icon to assign a shortcut.

You can set it to any key you want. For example, you can select A on the keyboard to help you remember that it is for Auto Align.

After setting it, press Save and close the window. From then on, highlight both audio and video clips, press A on the keyboard, select Synchronize using waveform, click Sync, and the clips will align.

3. Final Cut Pro

Final Cut Pro excels at synchronizing audio with video, with powerful automatic syncing (using waveforms, timecode, or markers) for multi-camera setups or external audio to create a single synchronized clip. You also get options for manual fine-tuning and handling complex multicam scenarios. This makes it ideal for matching separate audio recordings (like from a better mic) with camera footage.

Now, you are going to learn how to sync audio with video in Final Cut Pro. This is very easy and only takes a few clicks.

Step 1. Switch to List Mode

First, import the audio and the video clip to Final Cut Pro. Then, go to the upper left and toggle to List View. Here, you can select the two clips you want to synchronize. This means choosing the two clips that contain your audio and video.

Step 2. Synchronize Clips

With both clips selected, right-click and choose Synchronize Clips.

In the new pop-up, name your clip, and keep the boxes of "Use audio for synchronization" and "Disable audio components on AV clips" checked because the audio is used for synchronizing the clips.

Step 3. Add to Timeline

After that, the new synchronized clip is added to your project with the name you chose. You can drag this new one into your timeline. The original clips can be deleted since everything is now combined into this single synchronized clip.

Step 4. Check and Adjust Audio

Double-click the synchronized clip and make sure the waveforms are matching. If they look aligned, everything is good.

If needed, you can manually adjust them by dragging them back and forth. Always remember to turn down the volume on your A-roll so your professional microphone audio is isolated.

4. iMovie

iMovie lets you sync audio and video manually on your Mac by lining up waveforms in the timeline. This method works when audio is recorded separately and needs to match the video exactly. Once the waveforms line up, you can fine-tune the timing and remove the camera audio for a clean result.

Step 1. Import Video and Audio

Upload the video file and the audio file into iMovie. Drag the video file into the timeline first. After that, click and drag the audio file so it sits underneath the video file in the timeline. At this point, you should see two sets of audio waveforms, with the audio file shown in green and the video file shown in blue.

If you do not see the blue waveform, click View and then select Show Audio Waveforms.

Step 2. Align the Waveforms

Drag the audio file to different positions along the video file until the waveforms begin to match. If it is hard to judge visually, listen to the audio to help confirm alignment. Find a point in the green waveform that matches a point in the blue waveform and drag the files until they line up as closely as possible.

You can zoom in both audio and video by placing two fingers on the trackpad and dragging outward to align the waveforms more precisely.

Step 3. Fine-Tune and Clean Audio

After lining up the waveforms, listen closely to the audio. If you hear an echo, the alignment is close but not exact. Adjust the position until the audio sounds like a single track playing. Once the sync sounds correct, drag the audio waveform on the video file down to zero percent, or detach it and delete it from the timeline entirely.

At that point, the audio and video are perfectly synced in iMovie.

Part 2. How to Sync Audio with Video Using Online Tools

1. Canva

Canva is a very popular tool used to fix many video-related issues online, and it also offers an option to sync audio with video using its Beat Sync tool. Although it works for music videos, you can use it for other projects as well.

Step 1. Upload Video and Audio

Open the Canva Beat Sync page and upload your video file. As soon as the video is processed, it appears in the timeline below the editor.

Step 2. Upload Audio File

Now, click Upload to upload your audio file, and once it is uploaded, drag it to the Add Audio option showing below the video timeline.

Step 3. Sync Audio with Video and Download

Next, you can extend or trim the video, then drag the audio, extend or duplicate it for the perfect sync.

Lastly, click Download to save it.

2. Veed.io

VEED.io offers you the same kind of interface you usually find in video editing software to sync audio with video. The difference is that you can do all of this online.

Step 1. Open the Sync Page

On the VEED.io Sync Video to Audio page, click Sync Video to Audio. Then, upload your video file.

Then, you can upload your audio as well.

Step 2. Manually Sync Audio

Once the upload finishes, both files appear in the timeline at the bottom. Drag the audio file into the timeline and place it at the correct position to sync it with the video. Now, use the playback controls to check and make sure the audio and video line up properly.

Step 3. Edit and Download

After syncing, click Done and export it.

3. FlexClip

lexClip is another useful online tool for manually syncing audio with video. It offers the same type of interface that VEED.io provides and aims to maintain both audio and video quality.

Step 1. Upload Video and Audio

On the FlexClip page, click Sync Audio to Video Now to upload your video file.

As soon as you do this, a new editor opens. In the timeline below the video preview, you will see the Add Audio button. Click that button to upload your audio clip.

Step 2. Manually Sync Audio with Video

To fix an out-of-sync video, select the audio file and then trim, split, or duplicate it, and move it right below in a particular timeframe of the video for syncing.

Step 3. Preview and Save

Finally, preview the synced clip and save it.

4. OnlineConverter.com

OnlineConverter.com is a free online tool to sync audio in your captured video. You can control timing by delaying either the audio or the video and adjusting the duration as well. It supports many common input formats, and the result you get is an MP4 video.

Step 1. Upload Audio and Video

Visit the OnlineConverter.com Sync Audio and Video page, and upload your video. The input formats are MP4, 3GP, ASF, AVI, MPEG, MKV, and others.

Step 2. Choose Delay Type and Set Duration

Select whether you want to delay audio or delay video. When you choose Delay Audio, the video plays before the audio, and with the Delay Video, the audio plays before the video. Then, choose the Duration value to control the timing accurately.

Step 3. Convert and Download

Click Convert to start syncing.

Once the file is ready, click Download Now to download the synced video.

Part 3. FAQs of How to Sync Audio with Video

Conclusion on How to Sync Audio with Video

In this guide, we've covered how to sync audio with video with software to download on your Windows and Mac, and with a few online tools, too. Hopefully, you can engage with your audience better with perfectly timed audio and video.