Video optimization

Some videos stopped playing. I only see information that optimization is in progress, but this video has been uploaded for a very long time. On mac, this video is not displayed at all. At the same time, it is on the HDD, I was able to find it by name and it runs on my mac, but not in monument.

I also began to notice that some of my photos began to break, I see a gray square instead of them. This is very very bad