pub unsafe static kVTCompressionPropertyKey_MoreFramesBeforeStart: &'static CFStringAvailable on crate feature
VTCompressionProperties only.Expand description
Indicates whether and how a compression session’s frames will be concatenated with other compressed frames to form a longer series.
True if frames compressed in a separate session will be concatenated before the beginning of this one. False if this is a stand-alone session, or if this session will encode the first segment of a multi-segment compression. By default, false.
This information enables video encoders to ensure that compressed segments can be concatenated smoothly – for example, avoiding data rate spikes where segments are joined.
See also Apple’s documentation