Rockbox Development > Starting Development and Compiling
iPod chapter format
NicolasP:
everwicked: I once tried to find that information too but never found anything really useful. What I can tell you is that Apple uses some sort of proprietary format to store the chapters, as opposed to the standardised way others seem to use. I'd really like to get more information about this, so that I could implement these chapters in rockbox like cuesheets are.
saratoga:
You could ask on Hydrogenaudio. A number of AAC developers read that site.
NicolasP:
I've found that MP4Box is capable of reading the chapter info from iTunes podcasts (those created with Apple's ChapterTool or an equivalent). It can output an SRT file, so I wrote a small tool to convert an SRT file to a cuesheet and a small bash script to extract a cuesheet directly from an MP4 (ie MP4, M4A or M4B) file. I'll make these tools available soon.
The thing is that directories get a bit cluttered with one cuesheet per audio file, so I want to give rockbox the capability of looking for cuesheets in one precise directory.
everwicked:
Do you know if MP4Box can also WRITE those chapters?
NicolasP:
It can add chapter info to an MP4 file, but I don't think that info will be compatible with iTunes and the iPods.
EDIT: Actually it might be worth trying. you can try adding an SRT stream to an audio file and see if you get any results. Also maybe the chapter feature will work but I don't expect that. I can't test anything because I have neither iTunes (linux only) nor an iPod.
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