4 Commits (d759f7f1d080f2a31024f7fe6477c9a3ca5ec01f)

Author SHA1 Message Date
  Clément Bœsch de8cd93a05 doc/writing_filters: use ffmpeg.org instead of wikimedia.org for lena image 11 years ago
  Clément Bœsch 568f1ecccf doc/writing_filters: fix reference to Lenna image 11 years ago
  Clément Bœsch 6da12d46d3 doc/writing_filters: use a more portable sed command in the walk-through 11 years ago
  Clément Bœsch 53bac1b4bd doc: add a tutorial for writing filters. 11 years ago