Steam recoding issues
An error occurred playing this saved recording

I just keep seeing this same message over and over again, I have it set to record the last hour of gameplay footage so I can capture moments or record matches.
I can make clips.I can see the thumbnails, the footage is rendered but I can't view it through steam and have to covert it to an mp4 file first.

If I want to clip a specific part of a game i have to guess where it was on the timeline which is quite frustrating.

any way I can fix this?