GstCodecParsers.H264VUIParams

Fields

Name

Type

Access

Description

aspect_ratio_idc

int

r/w

aspect_ratio_info_present_flag

int

r/w

True specifies that aspect_ratio_idc is present. False specifies that aspect_ratio_idc is not present aspect_ratio_idc specifies the value of the sample aspect ratio of the luma samples sar_width indicates the horizontal size of the sample aspect ratio sar_height indicates the vertical size of the sample aspect ratio

bitstream_restriction_flag

int

r/w

True specifies that the following coded video sequence bitstream restriction parameters are present

chroma_loc_info_present_flag

int

r/w

True specifies that chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_field are present, False otherwise

chroma_sample_loc_type_bottom_field

int

r/w

chroma_sample_loc_type_top_field

int

r/w

specify the location of chroma for top field chroma_sample_loc_type_bottom_field specify the location of chroma for bottom field

colour_description_present_flag

int

r/w

True specifies that colour_primaries, transfer_characteristics and matrix_coefficients are present

colour_primaries

int

r/w

indicates the chromaticity coordinates of the source primaries

fixed_frame_rate_flag

int

r/w

True indicates that the temporal distance between the HRD output times of any two consecutive pictures in output order is constrained as specified in the spec, False otherwise.

log2_max_mv_length_horizontal

int

r/w

indicate the maximum absolute value of a decoded horizontal motion vector component

log2_max_mv_length_vertical

int

r/w

indicate the maximum absolute value of a decoded vertical motion vector component

low_delay_hrd_flag

int

r/w

specifies the HRD operational mode

matrix_coefficients

int

r/w

describes the matrix coefficients used in deriving luma and chroma signals

max_bits_per_mb_denom

int

r/w

indicates the maximum number of coded bits of macroblock_layer

max_bytes_per_pic_denom

int

r/w

indicates a number of bytes not exceeded by the sum of the sizes of the VCL NAL units associated with any coded picture in the coded video sequence.

max_dec_frame_buffering

int

r/w

specifies the required size of the HRD decoded picture buffer in units of frame buffers.

motion_vectors_over_pic_boundaries_flag

int

r/w

False indicates that no sample outside the picture boundaries and no sample at a fractional sample position, True indicates that one or more samples outside picture boundaries may be used in inter prediction

nal_hrd_parameters

GstCodecParsers.H264HRDParams

r/w

nal_hrd_parameters_present_flag

int

r/w

True if NAL HRD parameters exist in the bitstream

num_reorder_frames

int

r/w

indicates the maximum number of frames, complementary field pairs, or non-paired fields that precede any frame,

num_units_in_tick

int

r/w

is the number of time units of a clock operating at the frequency time_scale Hz time_scale: is the number of time units that pass in one second

overscan_appropriate_flag

int

r/w

True indicates that the cropped decoded pictures output are suitable for display using overscan. False the cropped decoded pictures output contain visually important information

overscan_info_present_flag

int

r/w

True overscan_appropriate_flag is present False otherwise

par_d

int

r/w

par_n

int

r/w

pic_struct_present_flag

int

r/w

True specifies that picture timing SEI messages are present or not

sar_height

int

r/w

sar_width

int

r/w

time_scale

int

r/w

timing_info_present_flag

int

r/w

True specifies that num_units_in_tick, time_scale and fixed_frame_rate_flag are present in the bitstream

transfer_characteristics

int

r/w

indicates the opto-electronic transfer characteristic

vcl_hrd_parameters

GstCodecParsers.H264HRDParams

r/w

vcl_hrd_parameters_present_flag

int

r/w

True if VCL HRD parameters exist in the bitstream

video_format

int

r/w

indicates the representation of the picture

video_full_range_flag

int

r/w

indicates the black level and range of the luma and chroma signals

video_signal_type_present_flag

int

r/w

True specifies that video_format, video_full_range_flag and colour_description_present_flag are present.

Methods

None

Details

class GstCodecParsers.H264VUIParams

The structure representing the VUI parameters.