Trimming and adjusting the speed makes the audio disappear.

[jienense]

When key points are added or the clip speed is changed in an MP4 file with sound, the audio disappears. This creates a problem when creating transitions with files that are slightly longer than 2 seconds, because the audio disappears when the speed has to be changed to fit the video to the 2-second transition. This is normal.

 

[Igor]

Yes, that's correct for V12. When video speed is not 100% or when you add keywords, the sound is muted automatically. The same was in previous versions (for speeds not equal to 100%).

We plan to enable sound for the modified speed, but I'm not sure how long it will take to write this code.