We brainstormed this list of the advantages and disadvantages of the DVD format over videotape, specifically for anime.
You get bonus features like interviews, picture galleries and documentaries
You can have subtitles or audio track or both
You can (usually) choose to listen/read subtitles in different languages
Picture quality is better
DVDs are more portable and easier to store
You can watch ‘on the move’ by playing in laptop devices
You can freeze frames and get a clear image
The sub vs dub debate is at an end because on DVD you can have both subtitles and dub tracks.
Companies only have to produce one disc instead of separate subbed and dubbed tapes, so they can sell more copies from one master, improve the quality of the product and still make more money.
Digital formats make piracy easier by enabling streaming and downloading over fast broadband services. Helen added information: Industry sources estimate that there are as many as 6 million illegal anime downloads a week. Obviously this is hard to verify exactly but it is undoubtedly a big problem for the industry.)