VuoAvWriterObject() Category Reference

Description

Manages writing audio and video samples to a movie file.

Do not use this class directly - use VuoAvWriter.

Definition at line 43 of file VuoAvWriterObject.m.

Properties
AVAssetWriter *	assetWriter
	AssetWriter object. Created and destroyed for every video file. More...
AVAssetWriterInput *	videoInput
	Video input. More...
AVAssetWriterInput *	audioInput
	Audio input. More...
AVAssetWriterInputPixelBufferAdaptor *	avAdaptor
	Convert from OpenGL texture to CVPixelBuffer. More...
CMFormatDescriptionRef	audio_fmt_desc
	Describes how the audio input samples are received. Eg, float, channels, packing, etc. More...
long	audio_sample_position
	The current frame of audio being written. Increases by sampleCount for each audioSample array fed in. More...
NSDate *	startDate
	The time and date that the first frame was written. More...
CMTime	lastImageTimestamp
	Last image timestamp written to the movie file. More...
CMTime	lastAudioTimestamp
	Last audio timestamp written to the movie file. More...
int	originalChannelCount
	How many audio channels are received in appendAudio. Cannot change once writing has commenced. More...
int	originalWidth
	The width of image this movie will write. Cannot change once writing has commenced. More...
int	originalHeight
	The width of image this movie will write. Cannot change once writing has commenced. More...
bool	firstFrame
	Used to set the startDate in appendImage or appendAudio, which is in turn used for calculating timestamp. More...

Property Documentation

assetWriter

- (AVAssetWriter*) assetWriter

readwriteatomicretain

AssetWriter object. Created and destroyed for every video file.

Definition at line 44 of file VuoAvWriterObject.m.

audio_fmt_desc

- (CMFormatDescriptionRef) audio_fmt_desc

readwriteatomic

Describes how the audio input samples are received. Eg, float, channels, packing, etc.

Definition at line 49 of file VuoAvWriterObject.m.

audio_sample_position

- (long) audio_sample_position

readwriteatomic

The current frame of audio being written. Increases by sampleCount for each audioSample array fed in.

Definition at line 50 of file VuoAvWriterObject.m.

audioInput

- (AVAssetWriterInput*) audioInput

readwriteatomicretain

Audio input.

Definition at line 46 of file VuoAvWriterObject.m.

avAdaptor

- (AVAssetWriterInputPixelBufferAdaptor*) avAdaptor

readwriteatomicretain

Convert from OpenGL texture to CVPixelBuffer.

Definition at line 47 of file VuoAvWriterObject.m.

firstFrame

- (bool) firstFrame

readwriteatomic

Used to set the startDate in appendImage or appendAudio, which is in turn used for calculating timestamp.

Definition at line 59 of file VuoAvWriterObject.m.

lastAudioTimestamp

- (CMTime) lastAudioTimestamp

readwriteatomic

Last audio timestamp written to the movie file.

Definition at line 54 of file VuoAvWriterObject.m.

lastImageTimestamp

- (CMTime) lastImageTimestamp

readwriteatomic

Last image timestamp written to the movie file.

Definition at line 53 of file VuoAvWriterObject.m.

originalChannelCount

- (int) originalChannelCount

readwriteatomic

How many audio channels are received in appendAudio. Cannot change once writing has commenced.

Definition at line 56 of file VuoAvWriterObject.m.

originalHeight

- (int) originalHeight

readwriteatomic

The width of image this movie will write. Cannot change once writing has commenced.

Definition at line 58 of file VuoAvWriterObject.m.

originalWidth

- (int) originalWidth

readwriteatomic

The width of image this movie will write. Cannot change once writing has commenced.

Definition at line 57 of file VuoAvWriterObject.m.

startDate

- (NSDate*) startDate

readwriteatomicretain

The time and date that the first frame was written.

Definition at line 52 of file VuoAvWriterObject.m.

videoInput

- (AVAssetWriterInput*) videoInput

readwriteatomicretain

Video input.

Definition at line 45 of file VuoAvWriterObject.m.

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The documentation for this category was generated from the following file:

• node/vuo.video/VuoAvWriterObject.m