This is what I've got so far, 1) mp4v2-2.0.0 supports chapters in mp4 files(mentioned on comment 2). The format for chapter storage is specified between lines 2321 and 2375 under src/mp4file.cpp ( http://code.google.com/p/mp4v2/downloads/detail?name=mp4v2-2.0.0.tar.bz2 ) .
2) comment 2 in https://bugs.kde.org/show_bug.cgi?id=240409 mentions that the dependency was removed. Is it safe for me to add it back? 3) I cross checked the format of chapter storage with a simple cpp program I wrote and got the titles of all chapters as output. But that was just using a regex and I'm not too sure that would be accepted as a solution. 4) An Issue was filed for TagLib https://github.com/taglib/taglib/issues/81 asking to expand support for chapters in mp3 files, which sadly, hasn't been solved yet. Unfortunately, I wasn't able to find anything similar for mp4. On Tue, Feb 19, 2013 at 1:35 AM, Matěj Laitl <ma...@laitl.cz> wrote: > On 19. 2. 2013 Abhinandan Ramprasath wrote: > > To solve the bug https://bugs.kde.org/show_bug.cgi?id=240409, > > Bug 240409 - be warned that it may turn out harder than expected, I dunno > who > marked it as a junior job. ;) > > > I was > > thinking I could create a MultiTrack (Meta::MultiTrack) list with all the > > chapters in a list one below the other and setting offsets to each > chapter > > in the m4b file(which I still haven't figured out how). > > I don't think MultiTrack would be necessary, see below. > > > 1) The supported filetypes does not include ".m4b" format listed, should > I > > add it to the list? > > Not needed, .m4b is just a different extension for the .m4a type and > shares the > same mime-type. > > > 2) Does the Meta::Track class have a base file, offset support(because I > > couldn't find any)? > > No, and it shouldn't be need. > > > 3) How does the "bookmark" feature work? can I use those functions to > > implement chapters? > > Definitely. I think the best approach is already outlined on the bug in > comment > #4: https://bugs.kde.org/show_bug.cgi?id=240409#c4 > > The biggest problem seems to be reading the chapter offsets from the .m4b > files, > you may want to make some research how these are stored and how they can be > read - Amarok uses TagLib exclusively for metadata extraction, so > preferably > TagLib-based solution could be found. > > If you don't find a feasible solution to read the chapters after reasonable > time invested, you may want to consider picking another junior-job that is > actually "junior". > I'm learning a lot, so I think I'll stick with this for a while ;) > > Matěj >
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