4 Commits (e8c1eb09c7fc5a3669fcb27f52de0cf2ace3931d)

Author SHA1 Message Date
  Clément Bœsch de8cd93a05 doc/writing_filters: use ffmpeg.org instead of wikimedia.org for lena image 10 years ago
  Clément Bœsch 568f1ecccf doc/writing_filters: fix reference to Lenna image 10 years ago
  Clément Bœsch 6da12d46d3 doc/writing_filters: use a more portable sed command in the walk-through 10 years ago
  Clément Bœsch 53bac1b4bd doc: add a tutorial for writing filters. 11 years ago