The mark command controls recording and erasing of marks on the videotape. VCR devices recognize this command.
mark device lpszMark
device
Identifier of an MCI device. This identifier or alias is assigned when the device is opened.
lpszMark
One of the following flags:
erase |
Erases a mark at the current position, if one exists. To erase a mark, first seek to the mark and then issue the mark “erase” command. |
write |
Writes a mark at the current position. The VCR might need to be in play or record mode for this command to succeed. |
flags
Can be “wait”, “notify”, or “test”. For more information about these flags, see The Wait, Notify, and Test Flags.
Returns zero if successful or an error otherwise.
Marks are special signals written to the content that can be detected by the VCR during high-speed searches. Marks are VCR specific.