diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 0ea39559d8..910f12fba9 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -8935,6 +8935,31 @@ unsharp=7:7:-2:7:7:-2 @end example @end itemize +@section uspp + +Apply ultra slow/simple postprocessing filter that compresses and decompresses +the image at several (or - in the case of @option{quality} level @code{8} - all) +shifts and average the results. + +The way this differs from the behavior of spp is that uspp actually encodes & +decodes each case with libavcodec Snow, whereas spp uses a simplified intra only 8x8 +DCT similar to MJPEG. + +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 0-8. If set to @code{0}, the filter will have no +effect. A value of @code{8} 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). +@end table + @anchor{vidstabdetect} @section vidstabdetect |