Why typical features found in video editing software are used, including: trimming and cropping a video clip, creating text-based slides, creating credits, adding captions and subtitles, adding fading effects, extracting a still image from a video clip, inserting a still image, editing audio within a video clip, exporting a video clip in different file formats, compressing a video to different resolutions

How and why typical features found in audio editing software are used, including: trimming, splicing/joining together two audio clips, fading in and fading out, normalising audio, applying noise reduction, overdubbing an audio clip, including voiceover, exporting an audio clip in different file formats, compressing an audio file