First make a backup of all files.
You have a video file (
.avi) and a separated audio file (
Open the Screenpresso settings Windows, go to "Video Capture" tab, click "Advanced video settings" button, then
. (This option is only available when
Direct recording to MP4
is not checked)
Select the video and the corresponding audio to merge
You have a
.avi file (with embedded audio) instead of a
Drag and drop the
.avi files to Screenpresso workspace then double-click on them to open them in the built-in video player.
you can then click on the "Format" button to convert the video.
You have separated
.mp4 files (with embedded audio) instead of 1 single
.mp4 video file
Open Screenpresso workspace, select the 2 first files, right-click then choose "Merge videos".
Redo the previous step to merge all the videos.