Number of frames to look ahead for when encoding, 0 no limit (valid values -min-q to 63, recommended value 50-63)įloat 0 - 1, 0 = CBR, 1 = VBR, (default 0.5)Įnable use of alternate reference frames (2-pass only) (valid values 0-63, recommended value 0-4) Minimal bitrate allowed in vbr/2pass mode Number of bits which should be loaded into the rc buffer before decoding starts (recommended value : number of real cores - 1) Number of threads to use for encoding, can't be 0 with VP8 At the moment this parameter is interpreted as follows (1 = 1 coefficient partition, 2 = 2 partitions, 4 = 4 partitions, 8 = 8 partitions)ġ,2,4,8: recommended 1 for small images, 4 or 8 for HD Strength of the temporal filter used in altrefīackward (Backward Blur), forward (Forward Blur), centered (Center Blur) ĭirects the encoder to split the coefficient encoding across multiple data partitions that can be encoded independently. Spatial resampling down watermark, percentage of target data buffer. Spatial resampling up watermark, percentage of target data buffer. The static threshold imposes a change threshold on blocks below which they will be skipped by the encoder. This can be used to suppress signal noise and enhance the encode speed in situations where there are low levels of real movement. Values of above 1000 are not recommended and any non zero value runs the risk of introducing artifacts caused by regions of the image not being updated.
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