Solution to convert ppt to video without sound: First click "Insert" in the ppt and click "Audio" to record the audio, click "OK"; then click "Save As" in the file and select the path ;Finally, select "MPEG-4 Video" in the save type.
The reason why there is no sound when ppt is converted to video is that there is no audio in the PPT. The solution is to add audio.
Click "Insert", click "Audio", record the audio, and click "OK".
Click "Save As" in the file and select the path.
Select "MPEG-4 Video" in the save type.
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