It is possible that the clips that you are using have a variable frame rate and/or a variable audio bit rate. Please supply a copy of the mediainfo of the clip that has the problem. Here is a link to Mediainfo online if you don't have the app on the laptop : https://mediaarea.net/MediaInfoOnline . Attach the mediainfo on your next reply.

Quote It is possible that the clips that you are using have a variable frame rate and/or a variable audio bit rate. Please supply a copy of the mediainfo of the clip that has the problem. Here is a link to Mediainfo online if you don't have the app on the laptop : https://mediaarea.net/MediaInfoOnline . Attach the mediainfo on your next reply.

Thanks so much. 2 mediainfo files attached, a GoPro Hero 7 and a Hero 8. Both have the same sync to video issue. Again its only during editing and when I produce the audio is synced fine. Sometimes I need to edit know precisely where the audio is and this is a problem for me.

Quote Thanks so much. 2 mediainfo files attached, a GoPro Hero 7 and a Hero 8. Both have the same sync to video issue. Again its only during editing and when I produce the audio is synced fine. Sometimes I need to edit know precisely where the audio is and this is a problem for me.

Thank you for the mediainfos. These are GoPro videos with a constant frame rate and a constant audio bitrate. I don’t have any problem editing the hevc version of them on a desktop. I have found in the past that toggling the Preference/General/Audio between stereo and 5.1 a few times and then OK fixes low level of audio heard on the timeline on previous PD versions. Only had to do that a few times in 10 years of video editing. You may want to change the Preview Quality from HD to High if you haven’t done so already. Check to see if 60 fps Drop frame yes is selected in Preferences. Enable Hardware decoding in Preferences/Hardware acceleration. That is all the suggestions I have as I edit 4k/60p hevc GoPro videos without the audio issues.

Others may want to chime in with their GoPro editing experience.

Quote

Thank you for the mediainfos. These are GoPro videos with a constant frame rate and a constant audio bitrate. I don’t have any problem editing the hevc version of them on a desktop. I have found in the past that toggling the Preference/General/Audio between stereo and 5.1 a few times and then OK fixes low level of audio heard on the timeline on previous PD versions. Only had to do that a few times in 10 years of video editing. You may want to change the Preview Quality from HD to High if you haven’t done so already. Check to see if 60 fps Drop frame yes is selected in Preferences. Enable Hardware decoding in Preferences/Hardware acceleration. That is all the suggestions I have as I edit 4k/60p hevc GoPro videos without the audio issues.

Others may want to chime in with their GoPro editing experience.

Thank you....Fixed!

Toggling between stereo and 5.1 did not help.

But what did help was changing the Preview Quality.!

I was in Full HD Preview when the audio delay occurred and I changed it to HD and the audio was now synchronized in HD preview. What's interesting is that when I went back to Full HD it remained synchronized. So perhaps toggling out of it helped. But no matter, it's no problem using a lower resolution to edit if it happens again.

Thanks so much for the help!.