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In the same way that Audio Sync Problems in VLC subtitles, it is also great for fixing audio that is out of sync. When you play a video file, you might hear the sound before the actual time or hear the words spoken only after the lips move. This means that the audio is out of sync, and you will need to fix the audio delay. If this keeps happening, it takes away from the fun of watching a movie.
After a few seconds, the sound sync is sometimes fixed on its own. It doesn’t always get fixed on its own. Most of the time, sounds are off by just a few milliseconds, but sometimes they are off by a few seconds or more. It can be a bother. This tutorial shows you how to use VLC Media Player to fix sound sync problems like these.
Fix: Audio Sync Problems in VLC
Set the VLC audio desynchronization permanently
- Open VLC Player.
- In menu bar, click to follow Tools > Preferences.
- Click the Audio tab.
- Check in All option under Show settings at the bottom-left corner.
- On the right pane, under Audio, set Audio desynchronization compensation. Set the value to positive, if audio lags behind the video. If the audio is playing ahead of video, set to negative value.
E.g. If audio lag is 2 seconds, you can set Audio desynchronization compensation to +2000 milliseconds. When the audio is 2 seconds ahead of video, set it to -2000 milliseconds. - Click Save.
Adjust audio video delay in VLC on Android device
- Open a video in VLC Media Player.
- From the interface controls, click on the second icon at the bottom.
- From the options, click Audio delay.
- Click on the + or – button to increase or decrease the audio speed in your video. The + button will delay the sound by 50 milliseconds, whereas the – button will hasten the sound. Press the + and – buttons until the audio gets synced with the video.
Use Shortcut Keys
For Windows users, tap “J” key on your Windows keyboard to expedite audio speed when audio falls lagging behind video image. Press “K” key on your PC keyboard to lower down audio speed if audio is faster than video picture. Each press will be 50 milliseconds (ms) faster or slower. Please carefully listen to your audio track and make judgement before you hit the shortcut keys.
FAQs
Click Tools > Preferences (or hit Ctrl + P). Click All from the Show Settings and go to the Audio tab. Go to Audio desynchronization compensation and set its value to positive, if audio lags, whereas, if the audio is playing ahead of the video, set to a negative value.
Open and play your video in VLC player. Press K or J to speed the audio up or down on Windows, and G or F on Mac. Open your video in Adobe Premiere. Highlight the video and audio files and select Merge Clips.
Potential contributors to latency in an audio system include analog-to-digital conversion, buffering, digital signal processing, transmission time, digital-to-analog conversion and the speed of sound in the transmission medium.