TiVo

• Extension: .ty, .ty+, .tmf, .tivo
• Company: TiVo Inc.
• Samples: http://samples.mplayerhq.hu/TiVo/

Introduction

TiVo is a format encapsulating MPEG-2 data.

ty format

The ty format consists of multiple chunks. Each chunk contains multiple records. Each record contains multiplexed MPEG-1 or MPEG-2 audio and video data. The multiplexing is non-standard. It looks like a mixture of a Program Stream and a Transport Stream, but lacks some features. Each ty chunk is padded with zeroes to be exactly 128kB.

tmf format

The tmf format is a tar-file that contains a blob of XML data and up to sixteen .ty files.

TiVo format

This is an encrypted MPEG-2 encapsulation used by TiVo To Go. It uses the Turing Cipher Algorithm and a device specific MAK (Media Access Key).