VideoPad Professional v. 6.10 on Windows 10
I'm aware that there are a number of threads on this subject, most dating back to the 2014-15 time frame. After reading a number of them, I don't see a definitive solution.
My source is an mp4 file recorded by a colleague with following properties:
Video: 1280x720 pixels, data rate = 9664kbps, total bitrate = 9894kbps, frame rate = 30fps
Audio: 229 kbps, 2 channel stereo, audio sample rate = 48kHz
The file plays fine in its original state. I have cut 5 clips out of it and spliced them together into a new sequence. This plays correctly in the VP editor. After exporting this sequence to a 720 P mp4 file, the audio gradually lags further and further behind the video. The total length of the new video is around 6:30.
Any new information on this issue will be much appreciated.