Question: In the 3GPP file format, what is distinctive about the starting value of all index numbers used, such as those found in Sample to Chunk, Sync Sample, and Shadow Sync Sample boxes?
Option 1: They start with zero (0) for consistency across all multimedia formats.
Option 2: They start with one (1), differing from typical indexing conventions that begin at zero.
Option 3: The starting value is dynamically assigned based on the content's encoding scheme.
Option 4: Index numbers are always negative to prevent confusion with absolute timestamps.
Explanation: This question assesses understanding of a specific detail in the 3GPP file format, which is crucial for accurate interpretation and implementation. The correct answer, 'They start with one (1)...', highlights a unique aspect of the 3GPP format that diverges from common indexing practices (which often start at zero). This distinction is vital for developers working with 3GPP files to ensure proper synchronization and parsing of media content.