TOD is a file format that is not widely used. TOD videos are usually captured by JVC cameras. It is a high-definition format that uses transport stream for video data. TOD files cannot be directly played on consumer video equipment. They must be converted or repacked into one of the widely adopted distribution format.

This format was originally intended for voice compression and is able to change the bit rates of encoded audio data. AMR is actively used for encoding and decoding voice while its being transmitted over network channels. The format allows one to consider network capacity and adapt it to channel loads. Due to this, the voice quality is practically undiminished.