QuickTime 4 Reference

Storing Captured Data in Multiple Files

In QuickTime 3, the sequence grabber allows a single capture session to store the captured data across multiple files. Each channel of a capture can be placed in a separate file. In this way, sound and video can be captured to separate files, even on separate devices. It is also possible to have a single capture session place its data on several different devices in sequence. As a result, several different devices can be used in a single capture session. This enables data capture to exceed any file size limitation imposed by a file system.

Note
The file offset parameter supports 64-bit file offsets in APIs that enable capture to multiple files. The QuickTime Movie Toolbox does not currently support 64-bit file offsets, so the high 32 bits of the offset is always 0000.

Application Examples