I am not an expert, but I've tried as many ways as I can to reword this phrase to find a solution to no avail.
It is difficult to explain, because I am not sure at what point this error occurs. Everything is working perfectly fine, I am editing my videos, adding music and small short voice clips to the video. Very basic, nothing crazy. I render the project, everything looks great in the final rendered product. I close the project and Premiere Pro. Some time later (I can't provide an exact timeframe here, but some videos edited back in 2017 as well as ones edited just several weeks ago), I open that same project back up in Premiere Pro. However, now, the edits are all there and the sound, everything looks as it did when I last saved the project, but the video is out of sync. There is a delay, in the playback, of where I placed the slices/ripple deletes. The video is moving at a normal pace, nothing is different in terms of the quality or frame rate of the video I recorded, but somehow all of the edits that I've made in the timeline have just... somehow shifted? The delay becomes much longer and more severe the further into the video you go; I can see that the delay is becoming more and more gradual throughout the playback of this video. When I discovered this happening to a video I worked on in Nov 2017, I opened a more recent one and it looks as though the same problems are happening even with recent projects, but NOT with ones that I worked on, let's say, yesterday. It takes somewhere between several weeks to a month, maybe, before this sudden shift happens.
Any ideas? Need more details? Not sure I explained in the best way possible, but I hope there are some answers out there. Brain may explode soon. Please help!
Working with macOS High Sierra 10.13.3
Premiere Pro is on its latest update
Filming my iPad Pro screen using USB connection and Quicktime on my iMac
I only use one long screen-recorded video for the entire duration of my Premiere Pro projects that are experiencing this issue.
Thank you!