Buffer.copyRegion

gst.buffer.Buffer copyRegion(gst.types.BufferCopyFlags flags, size_t offset, size_t size)

Creates a sub-buffer from parent at offset and size. This sub-buffer uses the actual memory space of the parent buffer. This function will copy the offset and timestamp fields when the offset is 0. If not, they will be set to #GST_CLOCK_TIME_NONE and #GST_BUFFER_OFFSET_NONE. If offset equals 0 and size equals the total size of buffer, the duration and offset end fields are also copied. If not they will be set to #GST_CLOCK_TIME_NONE and #GST_BUFFER_OFFSET_NONE.

Parameters

`flags`	the #GstBufferCopyFlags
`offset`	the offset into parent #GstBuffer at which the new sub-buffer begins.
`size`	the size of the new #GstBuffer sub-buffer, in bytes. If -1, all data is copied.

Returns

the new #GstBuffer or null if copying

failed.