GstCodecParsers.H265VUIParams

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

def_disp_win_bottom_offset

int

r/w

def_disp_win_left_offset

int

r/w

def_disp_win_right_offset

int

r/w

def_disp_win_top_offset

int

r/w

default_display_window_flag

int

r/w

True indicate that the default display window parameters present def_disp_win_left_offset:left offset of display rect def_disp_win_right_offset: right offset of display rect def_disp_win_top_offset: top offset of display rect def_disp_win_bottom_offset: bottom offset of display rect

field_seq_flag

int

r/w

True indicate field and False indicate frame

frame_field_info_present_flag

int

r/w

True indicate picture timing SEI messages are present for every picture and include the pic_struct, source_scan_type, and duplicate_flag syntax elements.

hrd_parameters_present_flag

int

r/w

True if hrd parameters present in the bitstream

hrd_params

GstCodecParsers.H265HRDParams

r/w

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

matrix_coefficients

int

r/w

describes the matrix coefficients used in deriving luma and chroma signals

max_bits_per_min_cu_denom

int

r/w

indicates an upper bound for the number of coded bits of coding_unit data for any coding block in any picture of the CVS

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.

min_spatial_segmentation_idc

int

r/w

when not equal to 0, establishes a bound on the maximum possible size of distinct coded spatial segmentation regions in the pictures of the CVS

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

neutral_chroma_indication_flag

int

r/w

True indicate that the value of chroma samples is equla to 1<<(BitDepthchrom-1).

num_ticks_poc_diff_one_minus1

int

r/w

plus 1 specifies the number of clock ticks corresponding to a difference of picture order count values equal to 1

num_units_in_tick

int

r/w

is the number of time units of a clock operating at the frequency time_scale Hz

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

parsed

bool

r/w

True indicate that VUI parameters have been parsed

poc_proportional_to_timing_flag

int

r/w

True indicates that the picture order count value for each picture in the CVS that is not the first picture in the CVS, in decoding order, is proportional to the output time of the picture relative to the output time of the first picture in the CVS.

restricted_ref_pic_lists_flag

int

r/w

sar_height

int

r/w

sar_width

int

r/w

tiles_fixed_structure_flag

int

r/w

True indicates that each PPS that is active in the CVS has the same value of the syntax elements num_tile_columns_minus1, num_tile_rows_minus1, uniform_spacing_flag, column_width_minus1, row_height_minus1 and loop_filter_across_tiles_enabled_flag, when present

time_scale

int

r/w

is the number of time units that pass in one second

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

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.H265VUIParams

The structure representing the VUI parameters.