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Diffstat (limited to 'doc/encoders.texi')
-rw-r--r-- | doc/encoders.texi | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index bc5772a..4db7764 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -1764,6 +1764,34 @@ Set number of frames to look ahead for frametype and ratecontrol. @item error-resilient Enable error resiliency features. +@item VP8-specific options +@table @option +@item ts-parameters +Sets the temporal scalability configuration using a :-separated list of +key=value pairs. For example, to specify temporal scalability parameters +with @code{ffmpeg}: +@example +ffmpeg -i INPUT -c:v libvpx -ts-parameters ts_number_layers=3:\ +ts_target_bitrate=250000,500000,1000000:ts_rate_decimator=4,2,1:\ +ts_periodicity=4:ts_layer_id=0,2,1,2 OUTPUT +@end example +Below is a brief explanation of each of the parameters, please +refer to @code{struct vpx_codec_enc_cfg} in @code{vpx/vpx_encoder.h} for more +details. +@table @option +@item ts_number_layers +Number of temporal coding layers. +@item ts_target_bitrate +Target bitrate for each temporal layer. +@item ts_rate_decimator +Frame rate decimation factor for each temporal layer. +@item ts_periodicity +Length of the sequence defining frame temporal layer membership. +@item ts_layer_id +Template defining the membership of frames to temporal layers. +@end table +@end table + @item VP9-specific options @table @option @item lossless |