[Mp4-tech] ADPCM in mp4 container

[Alptekin.Temizel visioprime.com]

Hi,
I would appreciate any reply regarding below questions:
- Is the "url" box type actually supported by standard players (i.e. can I 
have video and audio in separate files: lets say an mp4 file contains the 
video data and also has an url pointing to another mp4 file which contains 
audio)?
- Is it possible to have IMA-ADPCM compressed audio in an mp4 file? If 
possible, would a standard mp4 player -such as Apple Quicktime- play 
IMA-ADPCM audio with mpeg-4 video? 
Thanks in advance!
Alptekin Temizel
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