Manipulated files for testing recognition systems. (text, image, audio, video)

The data was manipulated in various ways. For texts, characters, words, sentences etc. were added, changed, removed or moved. In the case of images, elements were added, changed or removed and various filters and effects were applied.In the case of audio files, audio tracks of different lengths were added, changed or removed and various filters and effects were applied.In the case of video files, scenes of different lengths were cut out, images were moved to the foreground and various filters and effects were applied.This data is used to test recognition systems for manipulated content. The existing xlsx file documents the manipulations of the individual files.