For a long time video editing software has taken advantage of codecs installed with Quicktime. Adobe is no exception. They are gradually moving away from it, but it still pops up as needed sometimes.
Apple has stopped supporting Quicktime for windows so some feel there is a security risk. The solution is an option when installing Quicktime that only installs the support files, not the (.exe) program itself.
Find Quicktime with a Google search and install it. Your problem should disappear.
Here's the link to Quicktime 7.
Meantime make sure that you're using Add Media to add video to your project -- NOT File/Open.
BTW, your camcorder shoots at a variety of resolutions and frame rates. Which settings are you using?
You may want to ensure the settings for your project are matching those specs.
Bill & Steve.
Thanks for your responses. I have tried and am still having problems though not to all the files. I then remembered that some of the files and it appears to be the ones causing the problem have been through a recovery process. I recall accidentally deleting some files and I had to recover them from the SD card using Recuva file recovery software from Piriform. All the files are there but I am having problems opening them with any software after recovery. I know this problem sits outside of the Adobe umbrella, so I understand if no one can help.
MOV having H264 coded content inside that container seem to be supported even without quicktime installed.
At least from my Canon cameras.
So your recovery process is probably not succeding.
Or does it play in other players - on pc - or from SD-card or usb-drive if you have a player supporting that?
From your comment it seems you tried that, but many software players are buggy in comparison to standalone players..
If a general problem, just record a short clip of video again and put into PRE - and it will tell you.
On my Canon cameras they recommend always formatting SD cards with camera formatting.
They mention you may have some performance issues if not.
So if having general issues, maybe format card by camera.
But sadly it seems you might have lost those videos.
All the files are there but I am having problems opening them with any software after recovery. I know this problem sits outside of the Adobe umbrella, so I understand if no one can help.
They might be lost for ever.