I have an external Hard Drive attached to my router, it's formatted as NTFS. I can get the files on and off with my PC, obviously, and my Samsung TV streams films just fine.
I am to buy an iMac, I was wondering can I still get at the files on the external, even though it's NTFS?
If I save something from the iMac can a PC see and use them?
Can a Mac play .mkv?
Without using software, Mac can read but not write to NTFS.
A Mac cannot play .mkv natively, you would need software for that too VLC/XPlayer/Plex/XBMC, etc.
The only option you have to allow Windows and Mac OS to play nicely together with file systems is ExFat, but I doubt your Samsung would be able to read ExFat, I know mine can't
You can enable NTFS write in Mac OS X but it's buggy and caused one of my NTFS drives to become unreadable by Windows, had to reformat.
I purchased Paragon NTFS to write to NTFS on Mac and purchased MedaiFour MacDrive Pro to Read and write HFS+ Drives, never had a problem with either bits of software