ovectl_ratemanage2_arg

declared in "vorbis/vorbisenc.h"

The ovectl_ratemanage2_arg structure is used with vorbis_encode_ctl() and the OV_ECTL_RATEMANAGE2_GET and OV_ECTL_RATEMANAGE2_SET calls in order to query and modify specifics of the encoder's bitrate management configuration.

struct ovectl_ratemanage2_arg { int management_active; long bitrate_limit_min_kbps; long bitrate_limit_max_kbps; long bitrate_limit_reservoir_bits; double bitrate_limit_reservoir_bias; long bitrate_average_kbps; double bitrate_average_damping; };

Relevant Struct Members

management_active

nonzero if bitrate management is active

bitrate_limit_min_kbps

Lower allowed bitrate limit in kilobits per second

bitrate_limit_max_kbps

Upper allowed bitrate limit in kilobits per second

bitrate_limit_reservoir_bits

Size of the bitrate reservoir in bits

bitrate_limit_reservoir_bias

Regulates the bitrate reservoir's preferred fill level in a range from 0.0 to 1.0; 0.0 tries to bank bits to buffer against future bitrate spikes, 1.0 buffers against future sudden drops in instantaneous bitrate. Default is 0.1

bitrate_average_kbps

Average bitrate setting in kilobits per second

bitrate_average_damping

Slew rate limit setting for average bitrate adjustment; sets the minimum time in seconds the bitrate tracker may swing from one extreme to the other when boosting or damping average bitrate.