diff options
Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index c0bd281600..98bdaa0345 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -6476,6 +6476,42 @@ stereo3d=abl:sbsr @end example @end itemize +@section spp + +Apply a simple postprocessing filter that compresses and decompresses the image +at several (or - in the case of @option{quality} level @code{6} - all) shifts +and average the results. + +The filter accepts the following options: + +@table @option +@item quality +Set quality. This option defines the number of levels for averaging. It accepts +an integer in the range 0-6. If set to @code{0}, the filter will have no +effect. A value of @code{6} means the higher quality. For each increment of +that value the speed drops by a factor of approximately 2. Default value is +@code{3}. + +@item qp +Force a constant quantization parameter. If not set, the filter will use the QP +from the video stream (if available). + +@item mode +Set thresholding mode. Available modes are: + +@table @samp +@item hard +Set hard thresholding (default). +@item soft +Set soft thresholding (better de-ringing effect, but likely blurrier). +@end table + +@item use_bframe_qp +Enable the use of the QP from the B-Frames if set to @code{1}. Using this +option may cause flicker since the B-Frames have often larger QP. Default is +@code{0} (not enabled). +@end table + @anchor{subtitles} @section subtitles |