VideoToolboxPlus

VideoToolboxPlus is a collection of VideoToolbox helpers and extensions. It also adds some Swift-y syntax to the VideoToolbox API.

Getting Started

Simply add the VideoToolboxPlus.swift file to your project.

Usage

Turn code like this:

varsession:VTCompressionSession?=nil

letstatus=VTCompressionSessionCreate(nil,
width,
height,
kCMVideoCodecType_H264,
nil,
attributes,
nil,
callback,
unsafeBitCast(self,to:UnsafeMutablePointer<Void>.self),
&session)

varproperties:[NSString:NSObject]=[
kVTCompressionPropertyKey_RealTime:kCFBooleanTrue,
kVTCompressionPropertyKey_ProfileLevel:profileLevel,
kVTCompressionPropertyKey_AverageBitRate:bitrate,
kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration:maxKeyFrameIntervalDuration
]

VTSessionSetProperties(_session!,properties)
VTCompressionSessionPrepareToEncodeFrames(_session!)

letimageBuffer:CVImageBuffer!=CMSampleBufferGetImageBuffer(sampleBuffer)

letstatus=VTCompressionSessionEncodeFrame(session,
imageBuffer,
presentationTimeStamp,
presentationDuration,
nil,
nil,
&flags)

if status==noErr{
// handle error
}else{
// handle success
}

Into:

varsession:VTCompressionSession!=VTCompressionSession.new(width:width,
height:height,
codec:kCMVideoCodecType_H264,
callback:callback)

session.isRealtime=true
session.profile=profileLevel
session.averageBitrate=bitrate
session.maxKeyframeIntervalDuration=maxKeyframeIntervalDuration

session.prepare()

do{
trysession.encode(buffer:sampleBuffer)
}catch{
// handle error
}
// handle success

License

VideoToolboxPlus is released under the MIT license.

Comments or Questions?

Any questions or comments should be made into issues, or pull requests if you want to write some code.