STEPS TO REPRODUCE
1. Launch iClone 6
2. Apply a project – Dynamic Sky System
3. Go to Menu > Render > Render Video, set MP4 as Format, input 250 to Pixel Aspect
4. Check the box for "Enable Stereo Vision Output", select "Above/Bellow"
5. Press F10 to preview
6. Click to export, check the exported video

ACTUAL RESULT
Only the first half of video can play correctly, the second half of video plays without voice and the screen freezes

EXPECTED RESULT
Both Above/Bellow and Pixel Aspect effect can be executed correctly on this exported video