diff options
Diffstat (limited to 'doc/encoders.texi')
| -rw-r--r-- | doc/encoders.texi | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/doc/encoders.texi b/doc/encoders.texi index fd9235a05a..69bf742c2d 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -1401,6 +1401,22 @@ Possible values are: @end table Set to @code{lrcp} by default. +@item layer_rates @var{string} +By default, when this option is not used, compression is done using the quality metric. +This option allows for compression using compression ratio. The compression ratio for each +level could be specified. The compression ratio of a layer @code{l} species the what ratio of +total file size is contained in the first @code{l} layers. + +Example usage: + +@example +ffmpeg -i input.bmp -c:v jpeg2000 -layer_rates "100,10,1" output.j2k +@end example + +This would compress the image to contain 3 layers, where the data contained in the +first layer would be compressed by 1000 times, compressed by 100 in the first two layers, +and shall contain all data while using all 3 layers. + @end table @section librav1e |