Does OS X corrupt files when copying from SD card to desktop?

The bytes of the source file do not match the bytes of the destination file (after copying), even though the byte count (size) does match. As I stated, I used a hex comparison tool to compare the file on the SD card to the file that was copied to my mac desktop/HD after copying the entire DCIM folder to my desktop. The size of the files was exactly the same, but the bit/byte data was different. i.e. the source and destination files were not identical but were different/modified.

Well, like I said, the byte size in fact did *not* change. So I'm not even concerned about that. What *did* change is the content of those bytes and it doesn't matter what operating system you are using, the content of those bytes is *not* supposed to change.

Also, like I said before, if I copy the individual file (MP4) insead of the entire folder, and then do the binary/hex comparison, the byte data is identical. i.e.

a) copying one file at a time produces an *identical* file on the HD, i.e. the byte count AND the byte content are precisely the same.

b) copying a folder with multiple files produces a *different* file on the HD, i.e. the byte count is the same BUT the byte content differs from the original file.

No. I believe the issue persists. I suspect it has something to do with the NTFS reader/driver I had installed in OS X. Bascially, I installed that software so thay my Mac could read/write to NTFS formatted disks.

The honest truth is I've been trying to get away from Apple products because of this difficulty. I take most of my movies with my mobile phone now (switched to Android) and have them synced to Google Drive. The I sync Google Drive to my Mac where I can do video editing.