4 ms·
You're not going to further compress the AAC track. Also the iTunes DRM operated at the track level. The audio track in the otherwise normal MP4 file was encryp
by giantrobot 5y ago
You're not going to further compress the AAC track. Also the iTunes DRM operated at the track level. The audio track in the otherwise normal MP4 file was encrypted AAC data. All the metadata atoms and file header were all unencrypted.