[Mp4-tech] raw data blocks v.s. audio sample in MPEG-4 files

[Murphy Chen]

Dear All,
How many AAC raw data blocks are contained in an audio sample?
The specification seems not have specified this?
My idea is that if we can make sure only one raw data block is contained in an audio sample,
an ADTS stream can be generated via adding frame header to each audio sample if PCE is not existed.
And if PCE exists, an ADIF stream can be generated via generating an ADIF header, followed by audio samples.
In this way, the AAC decoder originally designed for accepting ADIF and ADTS formats can still be used
for MPEG-4 files without any modification.
Best Regards,
Murphy