> > > > I think opening a generic ticket for this would be a good move. 
Having
    > > > > the ability to trim essence would be very useful. Then we could also
    > > > > remove that godawful hack in mov.c as well, hopefully. There's more
    > > > > than a few formats that need some "warm-up" data or that leave a few
    > > > > frames of garbage at the end of the file, like all block transform
    > > > > audio codecs
    > > > 
    > > > For audio we have AV_PKT_DATA_SKIP_SAMPLES packet side data

Hey team - I'm back on my project to add gapless metadata support to ffmpeg. 
I've got a dev environment building and debugging ffmpeg up and running, and 
have been investigating movenc.c and related to try to figure out how to 
implement.

Just opened up a ticket here:
https://trac.ffmpeg.org/ticket/8631#ticket

I'm still working through some newbie issues, mostly trying to figure out where 
the relevant data is. And of course if there's anything in there that's way off 
I'd welcome comments to set me straight. Especially if you know details of 
getting at AAC encoding data you'll save me investigation time.

Thanks,
John

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