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How to get a cleaner and more selected audio recording in movies? Sound mixers use a clapperboard to make a sharp slate/clapping noise at the beginning/end of the filmmaking, so it will generate a peak in the waveform in both camera audio files and external audio files, which makes syncing audio and video easier in the post production. If you don't have a clapperboard, use your bare hands for the next time.
The next step is to delete the audio tracks from the cameras and line up the external audio tracks using sync audio and video software. If you have no ideas about how to make it, here are full tutorials of how to sync audio and video with the 5 best tools.
#1. VideoProc - The Simplest Software to Sync Audio and Video
VideoProc is around-around video processing software that can fix out of sync audio and video in a single file. The most common problems like iPhone video out of sync issue or action cam video out of sync issue can be mainly blamed to the weak video encoding and decoding. To resolve the A/V out of sync issue, VideoProc recalculates the stream's timestamps that indicate the exact moment where a video frame or an audio frame to be presented or decoded. And all that is left to do is to single-click on the controls and await syncing video and audio.
More so, VideoProc's built-in video converter helps transcode any video to other formats, codecs, frame rates, dimensions, bitrates, etc. swiftly thanks to the support of full GPU acceleration. It also allows you to do simple edits, as well as make a screencast.
VideoProc - Sync Audio and Video in a Blink.
- Line up audio and video by recalculating timestamps and fix the A/V out of sync problem.
- Adjust audio's volume, delay, or even mute all audio tracks.
- Reduce unwanted sounds using Denoise.
- Transcode any video/audio stream to other formats you need, such as 4K, AV1, HEVC, FLAC, etc.
- Record your PC, iPhone screen, webcam, internal sound, and voice-over at the same time.
How to Sync Audio and Video with VideoProc
Step 1. If you haven't yet downloaded VideoProc, you can do so for free at VideoProc.
Step 2. Launch VideoProc > go for Video on the main interface.
Step 3. Import the video file you will do synchronization to (select +Video on the top).
Step 5: Go for Rotate in the control bar. Put a checkmark in the box of Recalculate Time Stamp (Force A/V Sync) > Done. Or you can Adjust the audio delay and save it.
Step 6: Return to the last panel and click Run at the buttom right corner to start syncing.
#2. Premiere Pro - Flexible Software to Sync Audio and Video
Premiere Pro is not a one-trick pony in terms of audio and video synchronization. It offers a variety of features and controls that you can fix A/V out of sync with ease, including merging clips, synchronizing clips, and syncing audio and video manually. If you try one method and it doesn't work, be sure to try one of the others. The following are tutorials about how to fix audio and video out of sync in Premiere Pro with each method. Let's move on!
Sync Audio and Video with Merge Clips
Step 1. Import audio and video source clips to the Project panel.
Step 2. Select the video clip and audio clip(s) in the project panel > right-click and choose Merge Clips from the context menu.
Step 3. In the Merge Clips dialogue box, make sure that the circle next to audio is selected > go for OK. And a new merged clip is created in the Project panel.
Note: Clips in the Timeline are merged from the start of each clip instead of clip end, timecode, maker, etc.
Sync Audio and Video with Synchronize
Step 1. Import audio and video source clips to the Project panel and drag and drop them to the timeline area.
Step 2. Highlight all the video and audio clips you want to be synced (use keyboard shortcut Command+A or Ctrl+A, or click and drag to select) > right-click and choose Synchronize from the context menu.
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Step 3. In the Synchronize Clips dialogue box, make sure that the circle next to audio is selected > go for OK. And all the clips in the timeline get aligned. Then erase the audio tracks from cameras and use the sounds from external microphones.
Sync Audio and Video Manually
Step 1. Import audio and video source clips to the Project panel and drag and drop them to the timeline area.
Step 2. If you cannot see the audio waveforms in the timeline. Drag up the track headers on the left and zoom in the clips to get a closer look.
Step 3. Align the waveforms from different audio tracks by moving the audio clips with your mouse.
Step 4. When the audio and video tracks are synced, delete the audio source clips from cameras and keep the audio file from external devices.
#3. Red Giant PluralEyes4 - Professional Sync Audio and Video Tool
PluralEyes 4 is an audio and video synchronization software released by Red Giant. It works even greater when working with multiple-camera and audio recordings, which automates audio and video synchronization with a click of the button in seconds. And you're allowed to send the timeline to Premiere Pro, FCP, After Effects by exporting it into the project file format. By the way, it can be invoked within Adobe Premiere Pro as an extension and gets synchronization done without having to leave Premiere Pro.
How to Sync Audio and Video with PluralEyes 4
Step 1. Download and install the RedGiant Application Manager. and get PluralEyes4 trial version for 14 days.
Step 2. Launch the application, then import video clips and audio recordings recorded separately.
Step 3. When the audio and video clips are fully loaded, click the Synchronize button on the top and synchronization get started.
Step 4. When audio and video synchronization is done, you can check or preview the timeline by click on the small TV icon at the top left corner.
Step 5. Save the timeline as the project file and bring it into video editing programs.
#4. Tentacle Sync Studio - Sync Audio and Video Software for Mac
I'm guessing some of you may have heard or used Tentacle pocket audio recorders that pick up nice sounds for weddings, conferences, movies, reality shows, or other events in which you may shoot multiple angles. To help you out from the tedious syncing audio and video process, Tentacle has developed a program that can do audio and video synchronization in seconds and generate a timeline for furthering editing in other video editing software. However, it just runs on macOS currently, which might be prohibitive to some.
How to Sync Audio and Video with Tentacle Sync Studio
Step 1. Free download at Tentacle Sync and find the dmg package to install.
Step 2. Click the plus icon at the top left corner to import audio and video clips that have timecodes and Tentacle does synchronization automatically.
Step 3. Click Sycn Info to check if all your clips are synced without errors. And click Sync Map to check how the timeline looks.
Step 4. Export the timeline and open it in other editing program so that you can make edits for your project.
#5. VLC media player - Free Software to Sync Audio and Video
VLC is a cross-platform and open source media player that reads and plays almost all audio and video files in the world. You might have found that some video streams downloaded from torrent sites would go a little bit faster or slower than images in VLC. And even the slight mismatch of audio and video would turn you off quickly, I believe. So this follows a VLC tutorial of how to deal with audio and video out of sync problem.
How to Sync Audio and Video with VLC
Step 1. Free download VLC at VideoLan and install it on your machine.
Step 2. Open the audio and video out of sync file with VLC.
Step 3. If the audio is ahead of the video, hit the J key on your keyboard to make a 50 ms audio delay. If the audio is behind the video instead, hit the K key on your keyboard to make the audio going 50 ms faster.
Note: The synchronization changes won't be saved by VLC for PC/Mac/Linux. The effect is temporary.
Wrap Up
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VideoProc and VLC will do just fine when it comes to dealing with a single A/V out of sync file. If you're going to handle multiple-camera and audio recordings for a big event, go out with PluralEyes4 or Tentacle Sync Studio. If you don't want to spend extra on the sync audio and video software, take a look at how to do synchronization in Premiere Pro in three different ways.
