Forked data is related to Mac OS9 – it never had file extensions, so there was an extra data resource with info about the file, and then the file itself. Often when people copied the files, the resource bit wasn’t copied, and they ended up with files that the operating system didn’t know how to handle, because of the missing info on what file type it was, etc. If your footage was done on Mac OSX, chances are, you’re not suffering any datafork issues.
Can you open Media 100? If so, try starting a new blank project, and then importing the files in.
Alternatively, download Quicktime Player 7 from Apple’s website here:
Something else I’d recommend for Mojave – put the media on an external HFS+ formated disk when using Media 100. Sometimes Apple’s new Apple File System [APFS] doesn’t play as nicely as the traditional HFS+ hard drives for storing Media 100’s media. APFS is good enough for checking if a file opens in Quicktime Player 7 Pro, and for converting it with Apple Compressor or Edit Ready or indeed converting it with Quicktime Player 7 Pro, however, for Media 100 use, I found sometimes it played the footage okay, sometimes I just got a black screen, because it had forgot the media location – so I’d have to set the media location again…and just using a HFS+ drive for my media solved that issue so it was never a problem again, =). I’m typing off the top of my head. My actual problem was shown in this youtube video: https://www.youtube.com/watch?v=gDlu4DLTb1M
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Help! I am having the same issue as the author of this thread. I can’t open old media 100 files from around 1999. If you can open the files below, I would very much appreciate it! Some old footage I would love to see again. Thanks in advance.