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View Full Version : Using mp4box to make ISMA compliant


sderenzi
8th October 2007, 17:24
Greetings :D

A few questions:

1. By default when I add a RAW AAC stream to a new container mp4box adds 500 ms of interleaving to make it suitable for streaming, does this change if I add / remove tags? (would I need to interleave them again?)

2. When I run -isma on the files does it just move meta data to the beginning? What meta data (does this mean, tags)? Would I need to rerun it if I changed the tags? (title, artist, etc.)

That's it, thanks :X

bond
14th October 2007, 09:48
Greetings :D

A few questions:

1. By default when I add a RAW AAC stream to a new container mp4box adds 500 ms of interleaving to make it suitable for streaming, does this change if I add / remove tags? (would I need to interleave them again?)i dont think that it will remove it

2. When I run -isma on the files does it just move meta data to the beginning? What meta data (does this mean, tags)? Would I need to rerun it if I changed the tags? (title, artist, etc.)isma is not only about meta data (this means headers for the streams. i am not sure about tags, you might simply want to try it yourself), isma also includes specific trackids and bifs data to be stored

sderenzi
14th October 2007, 16:39
It looks like ISMA is only about the BIFS / IOD / OD. I don't think it has any other specifications associated with it.