HD DV tapes (HI-DEF Digital Video Tapes) were created for recording and playing back of digital signals instead of analog video signals. Launched in 1995, this tape format has become a perfect choice for videographers of today.
The video coding in DV tapes compress the recorded video on a frame-by-frame basis, while storing the audio uncompressed. The Digital Interface Format (DIF) may be the basic unit of recorded data on tapes. The audio, video and metadata are packaged into 80-byte Digital Interface Format (DIF) blocks which are combined into a 150-block sequence. The DIF blocks could be stored as file formats like AVI (Audio Video Interleave), Quick Time and MXF (Material eXchange Format). A video frame in a DV tape is formed by 10 or 12 sequences, depending on scanning rate of video and audio contents. After the video and audio signals get written to the tape, each sequence is defined as a complete track.
However, with the advancement of technology, Sony and Panasonic have introduced some latest versions of digital video tapes. Almost all the DV tapes use same compression system but differ in features like color rendition, robustness, editing functions and scanning pattern.
Check out some variants of HD DV tape that are highly utilized by television production houses:
? DVCPRO tape: Introduced in the entire year 1995, this variation of DV was developed by Panasonic. It really is highly used by broadcasting industries for news gathering and reporting process.
? DVCAM tape: This professional version of DV was launched by Sony 1996. It allows recording of Mini-DV footage over DVCAM tape and prevents audio synchronization drift which may occur when several generations of recorded copies are made by the users.
? DVCPRO50: This digital video format was introduced by Panasonic in the entire year 1997. It doubles the coded video data rate to 50 Mbit/s, thereby cutting recording time in half in comparison to DVCPRO tapes. It offers top quality recording of news and digital cinema and hence is really a boon to the broadcasting houses.
Apart from the previously listed video formats, there are a variety of digital video tapes that allows easy recording of audio and video signals. Many companies provide tapes as a data storage treatment for the customers. If you are searching for HD tapes, then you can choose data storage products provided by wholesale distributors in the United States. Some companies offer more than 10,000 electronic items from over 200 of the best manufactures in the film, tape, data storage and AV industries. You can examine out their online stores and enjoy noticeable savings on a variety of products.