Most recent smoothed encoding speed reported by ffmpeg, in seconds of output produced per second of wall time (e.g. 2.2 == "2.2x"). nil until ffmpeg emits its first speed sample.

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speed=(speed : Float64 | Nil)

Most recent smoothed encoding speed reported by ffmpeg, in seconds of output produced per second of wall time (e.g. 2.2 == "2.2x"). nil until ffmpeg emits its first speed sample.

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speed_alpha

Smoothing factor for the EMA on speed. Smaller = smoother but slower to react; 0.3 is a reasonable compromise on ffmpeg's ~0.5s cadence.

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speed_alpha=(speed_alpha : Float64)

Smoothing factor for the EMA on speed. Smaller = smoother but slower to react; 0.3 is a reasonable compromise on ffmpeg's ~0.5s cadence.

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started_at

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started_at=(started_at : Time::Instant)

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total_duration

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total_duration=(total_duration : Float64 | Nil)

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total_frames

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total_frames=(total_frames : Int64 | Nil)

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update_frame(frame : Int64) : Nil

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update_out_time(seconds : Float64) : Nil

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update_speed(raw : Float64) : Nil

Apply a fresh raw speed sample from ffmpeg, blending it with the existing smoothed value via an exponential moving average.

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