For years I have been using vegas studio, running on Windows 10, then11, then upgraded to vegas pro 19 and everything went really well.

I was then encouraged to upgrade the software to Vegas pro 22.

But now it allows me to add video clips from my Panasonic camera in m2ts format, but it will only show me the audio content, leaving the video blank. It does not give an error message but just ignores the video part.

I have failed to find a solution to this, so can you help.
If all else fails, am I able to go back to version 19, when everything was fine?

I have no problem with my Sony camera, which uses mp4 format, just the Panasonic.

Please advise.