Theora bitstream info. More...

#include <theora.h>

Data Fields
ogg_uint32_t	width
	encoded frame width

ogg_uint32_t	height
	encoded frame height

ogg_uint32_t	frame_width
	display frame width

ogg_uint32_t	frame_height
	display frame height

ogg_uint32_t	offset_x
	horizontal offset of the displayed frame

ogg_uint32_t	offset_y
	vertical offset of the displayed frame

ogg_uint32_t	fps_numerator
	frame rate numerator

ogg_uint32_t	fps_denominator
	frame rate denominator

ogg_uint32_t	aspect_numerator
	pixel aspect ratio numerator

ogg_uint32_t	aspect_denominator
	pixel aspect ratio denominator

theora_colorspace	colorspace
	colorspace

int	target_bitrate
	nominal bitrate in bits per second

int	quality
	Nominal quality setting, 0-63.

int	quick_p
	Quick encode/decode.

unsigned char	version_major

unsigned char	version_minor

unsigned char	version_subminor

void *	codec_setup

int	dropframes_p

int	keyframe_auto_p

ogg_uint32_t	keyframe_frequency

ogg_uint32_t	keyframe_frequency_force

ogg_uint32_t	keyframe_data_target_bitrate

ogg_int32_t	keyframe_auto_threshold

ogg_uint32_t	keyframe_mindistance

ogg_int32_t	noise_sensitivity

ogg_int32_t	sharpness

theora_pixelformat	pixelformat
	chroma subsampling mode to expect

Detailed Description

Theora bitstream info.

Contains the basic playback parameters for a stream, corresponding to the initial 'info' header packet.

Encoded theora frames must be a multiple of 16 in width and height. To handle other frame sizes, a crop rectangle is specified in frame_height and frame_width, offset_x and * offset_y. The offset and size should still be a multiple of 2 to avoid chroma sampling shifts. Offset values in this structure are measured from the upper left of the image.

Frame rate, in frames per second, is stored as a rational fraction. Aspect ratio is also stored as a rational fraction, and refers to the aspect ratio of the frame pixels, not of the overall frame itself.

See examples/encoder_example.c for usage examples of the other paramters and good default settings for the encoder parameters.

Field Documentation

◆ aspect_denominator

ogg_uint32_t theora_info::aspect_denominator

pixel aspect ratio denominator

◆ aspect_numerator

ogg_uint32_t theora_info::aspect_numerator

pixel aspect ratio numerator

◆ codec_setup

void* theora_info::codec_setup

◆ colorspace

theora_colorspace theora_info::colorspace

colorspace

◆ dropframes_p

int theora_info::dropframes_p

◆ fps_denominator

ogg_uint32_t theora_info::fps_denominator

frame rate denominator

◆ fps_numerator

ogg_uint32_t theora_info::fps_numerator

frame rate numerator

◆ frame_height

ogg_uint32_t theora_info::frame_height

display frame height

◆ frame_width

ogg_uint32_t theora_info::frame_width

display frame width

◆ height

ogg_uint32_t theora_info::height

encoded frame height

◆ keyframe_auto_p

int theora_info::keyframe_auto_p

◆ keyframe_auto_threshold

ogg_int32_t theora_info::keyframe_auto_threshold

◆ keyframe_data_target_bitrate

ogg_uint32_t theora_info::keyframe_data_target_bitrate

◆ keyframe_frequency

ogg_uint32_t theora_info::keyframe_frequency

◆ keyframe_frequency_force

ogg_uint32_t theora_info::keyframe_frequency_force

◆ keyframe_mindistance

ogg_uint32_t theora_info::keyframe_mindistance

◆ noise_sensitivity

ogg_int32_t theora_info::noise_sensitivity

◆ offset_x

ogg_uint32_t theora_info::offset_x

horizontal offset of the displayed frame

◆ offset_y

ogg_uint32_t theora_info::offset_y

vertical offset of the displayed frame

◆ pixelformat

theora_pixelformat theora_info::pixelformat

chroma subsampling mode to expect

◆ quality

int theora_info::quality

Nominal quality setting, 0-63.

◆ quick_p

int theora_info::quick_p

Quick encode/decode.

◆ sharpness

ogg_int32_t theora_info::sharpness

◆ target_bitrate

int theora_info::target_bitrate

nominal bitrate in bits per second

◆ version_major

unsigned char theora_info::version_major

◆ version_minor

unsigned char theora_info::version_minor

◆ version_subminor

unsigned char theora_info::version_subminor

◆ width

ogg_uint32_t theora_info::width

encoded frame width

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

theora.h

Data Fields