Google Cloud Video Transcoder V1 Client - Class H264CodecSettings (1.0.0)

Reference documentation and code samples for the Google Cloud Video Transcoder V1 Client class H264CodecSettings.

H264 codec settings.

Generated from protobuf message google.cloud.video.transcoder.v1.VideoStream.H264CodecSettings

Namespace

Google \ Cloud \ Video \ Transcoder \ V1 \ VideoStream

Methods

__construct

Constructor.

Parameters
Name Description
data array

Optional. Data for populating the Message object.
↳ width_pixels int

The width of the video in pixels. Must be an even integer. When not specified, the width is adjusted to match the specified height and input aspect ratio. If both are omitted, the input width is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the width, in pixels, per the horizontal ASR. The API calculates the height per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.
↳ height_pixels int

The height of the video in pixels. Must be an even integer. When not specified, the height is adjusted to match the specified width and input aspect ratio. If both are omitted, the input height is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the height, in pixels, per the horizontal ASR. The API calculates the width per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.
↳ frame_rate float

Required. The target video frame rate in frames per second (FPS). Must be less than or equal to 120. Will default to the input frame rate if larger than the input frame rate. The API will generate an output FPS that is divisible by the input FPS, and smaller or equal to the target FPS. See Calculating frame rate for more information.
↳ bitrate_bps int

Required. The video bitrate in bits per second. The minimum value is 1,000. The maximum value is 800,000,000.
↳ pixel_format string

Pixel format to use. The default is yuv420p. Supported pixel formats: - yuv420p pixel format - yuv422p pixel format - yuv444p pixel format - yuv420p10 10-bit HDR pixel format - yuv422p10 10-bit HDR pixel format - yuv444p10 10-bit HDR pixel format - yuv420p12 12-bit HDR pixel format - yuv422p12 12-bit HDR pixel format - yuv444p12 12-bit HDR pixel format
↳ rate_control_mode string

Specify the rate_control_mode. The default is vbr. Supported rate control modes: - vbr - variable bitrate - crf - constant rate factor
↳ crf_level int

Target CRF level. Must be between 10 and 36, where 10 is the highest quality and 36 is the most efficient compression. The default is 21.
↳ allow_open_gop bool

Specifies whether an open Group of Pictures (GOP) structure should be allowed or not. The default is false.
↳ gop_frame_count int

Select the GOP size based on the specified frame count. Must be greater than zero.
↳ gop_duration Google\Protobuf\Duration

Select the GOP size based on the specified duration. The default is 3s. Note that gopDuration must be less than or equal to segmentDuration, and segmentDuration must be divisible by gopDuration.
↳ enable_two_pass bool

Use two-pass encoding strategy to achieve better video quality. VideoStream.rate_control_mode must be vbr. The default is false.
↳ vbv_size_bits int

Size of the Video Buffering Verifier (VBV) buffer in bits. Must be greater than zero. The default is equal to VideoStream.bitrate_bps.
↳ vbv_fullness_bits int

Initial fullness of the Video Buffering Verifier (VBV) buffer in bits. Must be greater than zero. The default is equal to 90% of VideoStream.vbv_size_bits.
↳ entropy_coder string

The entropy coder to use. The default is cabac. Supported entropy coders: - cavlc - cabac
↳ b_pyramid bool

Allow B-pyramid for reference frame selection. This may not be supported on all decoders. The default is false.
↳ b_frame_count int

The number of consecutive B-frames. Must be greater than or equal to zero. Must be less than VideoStream.gop_frame_count if set. The default is 0.
↳ aq_strength float

Specify the intensity of the adaptive quantizer (AQ). Must be between 0 and 1, where 0 disables the quantizer and 1 maximizes the quantizer. A higher value equals a lower bitrate but smoother image. The default is 0.
↳ profile string

Enforces the specified codec profile. The following profiles are supported: * baseline * main * high (default) The available options are FFmpeg-compatible. Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.
↳ tune string

Enforces the specified codec tune. The available options are FFmpeg-compatible. Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.
↳ preset string

Enforces the specified codec preset. The default is veryfast. The available options are FFmpeg-compatible. Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

getWidthPixels

The width of the video in pixels. Must be an even integer.

When not specified, the width is adjusted to match the specified height and input aspect ratio. If both are omitted, the input width is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the width, in pixels, per the horizontal ASR. The API calculates the height per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.

Returns
Type Description
int

setWidthPixels

The width of the video in pixels. Must be an even integer.

When not specified, the width is adjusted to match the specified height and input aspect ratio. If both are omitted, the input width is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the width, in pixels, per the horizontal ASR. The API calculates the height per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.

Parameter
Name Description
var int
Returns
Type Description
$this

getHeightPixels

The height of the video in pixels. Must be an even integer.

When not specified, the height is adjusted to match the specified width and input aspect ratio. If both are omitted, the input height is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the height, in pixels, per the horizontal ASR. The API calculates the width per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.

Returns
Type Description
int

setHeightPixels

The height of the video in pixels. Must be an even integer.

When not specified, the height is adjusted to match the specified width and input aspect ratio. If both are omitted, the input height is used. For portrait videos that contain horizontal ASR and rotation metadata, provide the height, in pixels, per the horizontal ASR. The API calculates the width per the horizontal ASR. The API detects any rotation metadata and swaps the requested height and width for the output.

Parameter
Name Description
var int
Returns
Type Description
$this

getFrameRate

Required. The target video frame rate in frames per second (FPS). Must be less than or equal to 120. Will default to the input frame rate if larger than the input frame rate. The API will generate an output FPS that is divisible by the input FPS, and smaller or equal to the target FPS. See Calculating frame rate for more information.

Returns
Type Description
float

setFrameRate

Required. The target video frame rate in frames per second (FPS). Must be less than or equal to 120. Will default to the input frame rate if larger than the input frame rate. The API will generate an output FPS that is divisible by the input FPS, and smaller or equal to the target FPS. See Calculating frame rate for more information.

Parameter
Name Description
var float
Returns
Type Description
$this

getBitrateBps

Required. The video bitrate in bits per second. The minimum value is 1,000. The maximum value is 800,000,000.

Returns
Type Description
int

setBitrateBps

Required. The video bitrate in bits per second. The minimum value is 1,000. The maximum value is 800,000,000.

Parameter
Name Description
var int
Returns
Type Description
$this

getPixelFormat

Pixel format to use. The default is yuv420p.

Supported pixel formats:

  • yuv420p pixel format
  • yuv422p pixel format
  • yuv444p pixel format
  • yuv420p10 10-bit HDR pixel format
  • yuv422p10 10-bit HDR pixel format
  • yuv444p10 10-bit HDR pixel format
  • yuv420p12 12-bit HDR pixel format
  • yuv422p12 12-bit HDR pixel format
  • yuv444p12 12-bit HDR pixel format
Returns
Type Description
string

setPixelFormat

Pixel format to use. The default is yuv420p.

Supported pixel formats:

  • yuv420p pixel format
  • yuv422p pixel format
  • yuv444p pixel format
  • yuv420p10 10-bit HDR pixel format
  • yuv422p10 10-bit HDR pixel format
  • yuv444p10 10-bit HDR pixel format
  • yuv420p12 12-bit HDR pixel format
  • yuv422p12 12-bit HDR pixel format
  • yuv444p12 12-bit HDR pixel format
Parameter
Name Description
var string
Returns
Type Description
$this

getRateControlMode

Specify the rate_control_mode. The default is vbr.

Supported rate control modes:

  • vbr - variable bitrate
  • crf - constant rate factor
Returns
Type Description
string

setRateControlMode

Specify the rate_control_mode. The default is vbr.

Supported rate control modes:

  • vbr - variable bitrate
  • crf - constant rate factor
Parameter
Name Description
var string
Returns
Type Description
$this

getCrfLevel

Target CRF level. Must be between 10 and 36, where 10 is the highest quality and 36 is the most efficient compression. The default is 21.

Returns
Type Description
int

setCrfLevel

Target CRF level. Must be between 10 and 36, where 10 is the highest quality and 36 is the most efficient compression. The default is 21.

Parameter
Name Description
var int
Returns
Type Description
$this

getAllowOpenGop

Specifies whether an open Group of Pictures (GOP) structure should be allowed or not. The default is false.

Returns
Type Description
bool

setAllowOpenGop

Specifies whether an open Group of Pictures (GOP) structure should be allowed or not. The default is false.

Parameter
Name Description
var bool
Returns
Type Description
$this

getGopFrameCount

Select the GOP size based on the specified frame count. Must be greater than zero.

Returns
Type Description
int

hasGopFrameCount

setGopFrameCount

Select the GOP size based on the specified frame count. Must be greater than zero.

Parameter
Name Description
var int
Returns
Type Description
$this

getGopDuration

Select the GOP size based on the specified duration. The default is 3s. Note that gopDuration must be less than or equal to segmentDuration, and segmentDuration must be divisible by gopDuration.

Returns
Type Description
Google\Protobuf\Duration|null

hasGopDuration

setGopDuration

Select the GOP size based on the specified duration. The default is 3s. Note that gopDuration must be less than or equal to segmentDuration, and segmentDuration must be divisible by gopDuration.

Parameter
Name Description
var Google\Protobuf\Duration
Returns
Type Description
$this

getEnableTwoPass

Use two-pass encoding strategy to achieve better video quality.

VideoStream.rate_control_mode must be vbr. The default is false.

Returns
Type Description
bool

setEnableTwoPass

Use two-pass encoding strategy to achieve better video quality.

VideoStream.rate_control_mode must be vbr. The default is false.

Parameter
Name Description
var bool
Returns
Type Description
$this

getVbvSizeBits

Size of the Video Buffering Verifier (VBV) buffer in bits. Must be greater than zero. The default is equal to VideoStream.bitrate_bps.

Returns
Type Description
int

setVbvSizeBits

Size of the Video Buffering Verifier (VBV) buffer in bits. Must be greater than zero. The default is equal to VideoStream.bitrate_bps.

Parameter
Name Description
var int
Returns
Type Description
$this

getVbvFullnessBits

Initial fullness of the Video Buffering Verifier (VBV) buffer in bits.

Must be greater than zero. The default is equal to 90% of VideoStream.vbv_size_bits.

Returns
Type Description
int

setVbvFullnessBits

Initial fullness of the Video Buffering Verifier (VBV) buffer in bits.

Must be greater than zero. The default is equal to 90% of VideoStream.vbv_size_bits.

Parameter
Name Description
var int
Returns
Type Description
$this

getEntropyCoder

The entropy coder to use. The default is cabac.

Supported entropy coders:

  • cavlc
  • cabac
Returns
Type Description
string

setEntropyCoder

The entropy coder to use. The default is cabac.

Supported entropy coders:

  • cavlc
  • cabac
Parameter
Name Description
var string
Returns
Type Description
$this

getBPyramid

Allow B-pyramid for reference frame selection. This may not be supported on all decoders. The default is false.

Returns
Type Description
bool

setBPyramid

Allow B-pyramid for reference frame selection. This may not be supported on all decoders. The default is false.

Parameter
Name Description
var bool
Returns
Type Description
$this

getBFrameCount

The number of consecutive B-frames. Must be greater than or equal to zero. Must be less than VideoStream.gop_frame_count if set. The default is 0.

Returns
Type Description
int

setBFrameCount

The number of consecutive B-frames. Must be greater than or equal to zero. Must be less than VideoStream.gop_frame_count if set. The default is 0.

Parameter
Name Description
var int
Returns
Type Description
$this

getAqStrength

Specify the intensity of the adaptive quantizer (AQ). Must be between 0 and 1, where 0 disables the quantizer and 1 maximizes the quantizer. A higher value equals a lower bitrate but smoother image. The default is 0.

Returns
Type Description
float

setAqStrength

Specify the intensity of the adaptive quantizer (AQ). Must be between 0 and 1, where 0 disables the quantizer and 1 maximizes the quantizer. A higher value equals a lower bitrate but smoother image. The default is 0.

Parameter
Name Description
var float
Returns
Type Description
$this

getProfile

Enforces the specified codec profile. The following profiles are supported:

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Returns
Type Description
string

setProfile

Enforces the specified codec profile. The following profiles are supported:

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Parameter
Name Description
var string
Returns
Type Description
$this

getTune

Enforces the specified codec tune. The available options are FFmpeg-compatible.

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Returns
Type Description
string

setTune

Enforces the specified codec tune. The available options are FFmpeg-compatible.

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Parameter
Name Description
var string
Returns
Type Description
$this

getPreset

Enforces the specified codec preset. The default is veryfast. The available options are FFmpeg-compatible.

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Returns
Type Description
string

setPreset

Enforces the specified codec preset. The default is veryfast. The available options are FFmpeg-compatible.

Note that certain values for this field may cause the transcoder to override other fields you set in the H264CodecSettings message.

Parameter
Name Description
var string
Returns
Type Description
$this

getGopMode

Returns
Type Description
string