Black Magic .MOV Files will not open

We filmed a couple movies and the camera man used a black magic camera. There was a falling out with the director and he gave us all the files on an external drive. They are in .mov format which should technically open in quick time on a mac...they will not. I have tried numerous programs to get them to open but they all say they can't recognize the format. I have tried to use converters to convert them but still to no avail. The former camera man will not help us and just say they are all there. I have used VLC Player, Devinci Resolve, Fusion Studio, Aimersoft, HD Video Converter Factory Pro and several others.
When I right click one of the files and look at the details, It has no details for Audio of Video, only file information. Under the general tab it shows it to be a Quick Time File (.mov). They are showing the correct data file size.
Can anyone help me with this issue? I can provide more information if needed.
We have 2 films that are lost if we can't retrieve these files.

you can see more info with this app, and post the result here

https://mediaarea.net/en/MediaInfo

<mpeg7:Name>MediaInfoLib - v22.06</mpeg7:Name>
</mpeg7:Tool>
</mpeg7:Instrument>
</mpeg7:DescriptionMetadata>
<mpeg7:Description xsi:type="ContentEntityType">
<mpeg7:MultimediaContent xsi:type="MultimediaType">
<mpeg7:Multimedia>
<mpeg7:MediaInformation>
<mpeg7:MediaProfile>
<mpeg7:MediaFormat>
<mpeg7:Content href="urn:x-mpeg7-mediainfo:cs:ContentCS:2009:unknown">
<mpeg7:Name xml:lang="en">mov</mpeg7:Name>
</mpeg7:Content>
<mpeg7:FileSize>425997480</mpeg7:FileSize>
</mpeg7:MediaFormat>
</mpeg7:MediaProfile>
</mpeg7:MediaInformation>
</mpeg7:Multimedia>
</mpeg7:MultimediaContent>
</mpeg7:Description>
</mpeg7:Mpeg7>

It will not let me post the first half of the info saying I can't post URls

[Peter Chamberlain]

post a sample clip on dropbox etc.. and put the link here with a space in the path