When I am previewing in the timeline, the video actually plays slower than normal, for instance, if I play the video on the timeline the same time i play it on my phone, my phone plays the video faster.
This problem occurs ONLY when I drag the video on the timeline, when I put the video in the library or produce it, the video plays at normal speed, but if I play it on the timeline, the video plays slower. If the video I put down is 5 minutes long, while the ACTUAL playing time is 5 minutes, but in the timeline the video might end at 4 minutes because it plays slower.
I find this happens a few minutes after I uploaded the video to the library. When I upload the video to the library, first there would be a yellow icon on the corner, and if I put it on the timeline, the video plays in normal speed. But after a few minutes, all a sudden the video's icon at the library turns green and the video will play slower in the timeline, forcing me to delete the entire video and reuploading the video so I can have normal playback speed for a few minutes.
One thing to note, I am using the free version all along, so is it I have to purchase the full version to stop this from happening? or anything I need to do? thanks