Can't export mp4 files

I've got a couple of mp4 files that behave werdly in resolve.
When I scrub thru them parts a red „media offline“ signal begins to flash, but only
on certain frames of the clip and when I try to export them davinci asks me whether or not
their on my drive but I find them in the Finde right next to clips from the same shoot
that behave totally normal.

Can anybody help me out here?

It sounds like those files have some corruption and dropped frames. Possibly a problem with the media they were recorded onto.

I am currently having this same issue. I've been working on a project for about 2 weeks with no issues with the same footage. For no apparent reason I started getting the media offline screen when scrubbing through a single clip.

I've right clicked on clip > find in media pool. The clip is there and I can open the clip and it plays completely through without the Media Offline screen. I also went ahead and replaced the clip with the same clip on my client drive and it reloaded.

When I go back to the timeline where the clip is in my edit I get the Media Offline screen again as I scrub through. Seems very odd that the issue is only happening within the timeline. I've also created duplicate timelines and transferred all the clips to a fresh new timeline and the issue continues.

Any help/feedback is helpful.

Here's a screen record of my issue:
https://drive.google.com/file/d/1hMgRF3 ... drive_link

Make sure there's no Cache at play here. Go to Playback>Render Cache and set it to None.

Report back.