Method for recording information on a record medium, record medium containing information, and method and device for reading information from a record medium

Method for recording an information stream (M) on a record medium (2), the information stream comprising a plurality of alternative streams (VS1;

• VS2;
• VS3) and at least one common part (AS1;
• AS2;
• GS1;
• GS2), wherein the alternative streams (VS1;
• VS2;
• VS3) of the information stream are recorded in an interleaved manner;
• wherein each of the alternative information streams (VS1;
• VS2;
• VS3) is divided into alternative information stream blocks (VSB1(i);
• VSB2(i);
• VSB3(i));
• wherein each of the common information stream parts (AS1;
• AS2;
• GS1;
• GS2) is divided into common information stream blocks (ASB1(i);
• ASB2(i);
• GSB1(i);
• GSB2(i));
• and wherein the information stream is recorded as a succession of consecutive interleaved units (IU(i)), each interleaved unit (IU(i)) comprising one corresponding block (ASB1(i);
• ASB2(i);
• GSB1(i);
• GSB2(i)) of each of the common information stream parts (AS1;
• AS2;
• GS1;
• GS2) and one corresponding block (VSB1(i);
• VSB2(i);
• VSB3(i)) of each of the alternative information streams (VS1;
• VS2;
• VS3), the common information stream blocks being separate from the alternative information stream blocks.