Methods and apparatus to monitor digital media

An apparatus to increase an accuracy of inaccurate timing information of metadata, the apparatus comprising:

• memory;
• instructions in the apparatus;
• and
• a processor to execution the instructions to:
• generate a plurality of errors by comparing (a) a plurality of ordered metadata adjusted using a plurality of offsets and (b) reference data, the adjusted ordered metadata corresponding to metadata with inaccurate timing information for media;
• identify an offset of the plurality of offsets based on the plurality of errors;
• and
• adjust timing information of the metadata using the offset to increase an accuracy of the timing information.

A non-transitory computer readable storage medium comprising instructions which, when executed, cause one or more processors to at least:

• generate a plurality of errors by comparing (a) a plurality of ordered metadata adjusted using a plurality of offsets and (b) reference data, the adjusted ordered metadata for metadata with inaccurate timing information corresponding to media;
• identify an offset of the plurality of offsets based on the plurality of errors;
• and
• adjust timing information of the metadata using the offset to increase an accuracy of the timing information.