What to do if your audio is out of sync in HitFilm 4
To fix audio in Hitfilm 4, you need to know what caused the sync issues in the first place. Most often, changes in audio volume (either too loud or not loud enough) will cause sync issues. Also, if you are unhappy with the audio quality or the cleanliness or lack of sound from your audio track in Hitfilm 4, you should make sure it’s set to “Stereo Dolby Digital”. This is a sound format that fully uses all channels of your audio device.
If you have a “Loudness War” issue (an issue with the recording volume being too loud), you can fix it in Adobe Premiere Pro. You should ideally turn off audio normalization (because you get true stereo dolby digital sound that way) and then take advantage of the new audio processing tools in Adobe Premiere Pro, if you are using it for your editing software.
The loudness war is about people having to make their audio files louder and louder to compete with others that have loudness wars as well. When this happens, you end up with audio that sounds horrible, it’s incredibly distorted , and all in all it loses a lot of the original sound. So, if you are recording audio for a video that you are going to upload online or get published somewhere, be careful about how loud you record your audio.
How to fix the audio sync issue in HitFilm 4
If you are using the audio device built into your laptop, make sure the “speaker level” is set to normal or maximum. If you’re using external speakers, make sure they are not turned down all the way (you’ll see a picture of a speaker on a computer monitor with an arrow pointing up or down – pull it up)