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Interface: VolumeOptions

Defined in: packages/player/src/filters.ts:692

AudioFilters.volume options.

Properties​

gainDb​

readonly gainDb: number;

Defined in: packages/player/src/filters.ts:704

Gain in dB. Negative values buy headroom ahead of an EQ boost.

The ±100 dB bound is ours, not ffmpeg's. volume's only gain option is an expression string (af_volume.c:67-68, AV_OPT_TYPE_STRING defaulting to "1.0") evaluated by av_expr_eval, so libavfilter imposes no numeric range at all. We write <n>dB, which libavutil's expression parser understands natively and — importantly — parses sign-first, so -6dB is −6 dB and not -(6dB) (libavutil/eval.c:120-123 and the parse_dB special case at :574-587).