I have imported several AVCHD clips to CS4. Occasionally one clip will play the video and audio OK for a part of the clip and then the audio blanks out. In the Audio timeline I can see the audio waveform displayed, but it does not play. I have tried cutting the clip and dragging it again to the timeline but it doesn't play. The audio in the clip played most of the way through the clip but blanked in the last15-20 seconds. This has happened previously to other clips. I have played the clip in the source monitor and the same thing happens, always at the same point in the clip. I deleted the clip from CS4 and re-imported it and all was well this time.
Any ideas about this? As I said, I can see the waveform in the timeline, so I know it imported with the complete audio. Why won't CS4 play it. I am using the 64-bit Windows Vista Ultimate with 4gb of RAM and a quad 2.26gb processor. The video files are all on a dedicated 360gb hard drive.