[M4IF Technotes] multiple audio tracks into an mp4 file

[nico.oorts]

I found what the problem was. It is not yet what I want it to be, but 
for research it was sufficient. What I did first was different updates 
of OD's at the time that I updated the scene. Now I update all the OD's 
from the different tracks at time 0. The problem I have for the moment 
is that all tracks internally start playing from time 0 and when I do an 
update of the scene at time 15000, the second track is already playing 
for 15s. This is probably because I update all the OD's at time 0.(??) 
Now I am looking for a way to convert a textual description (something 
like bifstext) into a BIFS and OD track, not immediatly an mp4 file. 
(probably I need to use BIFSenc from the standard reference software?)
I'm using Realplayer One with the envivio plugin, also winamp with an 
mp4 plugin (only audio) and Quicktime 6.
Best regards,
Nico Oorts
Cyril Concolato wrote:
>Hi Nico, Olivier,
>
>  
>
>>Maybe you can make those streams available and someone can check what is
>>wrong ...
>>    
>>
>This could be great, I'm pretty sure I could tell you if you're file is
>correct or not.
>
>  
>
>>>Hi all,
>>>
>>>With the mp4tool (JC Dufourd), I try to make a .mp4 file
>>>which contains
>>>multiple audiotracks. I make a scene with an audiosource. This
>>>audiosource has an url to the OD which contains the
>>>elementary stream.
>>>After some time I replace the audiosource by another which
>>>has also an
>>>url to an OD and ES. The result is an .mp4 which contains the
>>>tracks (I
>>>can check this with some tools and size), but play only the
>>>first track.
>>>Some ideas why this does not work?
>>>      
>>>
>Which player are you using? 
>
>Regards,
>
>Cyril
>
>  
>