Why when I try to REWIND or FAST forward the video is garbled? REAL PLAYER VIDEOS Since the material is being streamed (delivered to you when you need it rather than being stored on your computer) it may take another 30 seconds to fill your buffer before it starts to play. When it starts to play the video and sound may be out of sync and garbled. This is not anything we can control at YourOtherTeacher.com. Real Player version 10 can resolve this if you have the following with the red circle checked.