there are some situations where using video may be inappropriate . for instance,
1. video files are significantly larger than audio files. this means that people on low bandwidth connections will have difficulty watching a video stream.
2. video is , essentially , a serial medium. it can be clumsy to try flick back and forth between scenes in a video . therefore, if your audience needs to have easy access to all the content , it may be more appropriate to provide the information in text form - for example, the instructions for repairing a machine in probably best given in the form of a manual