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encoding to hap alpha
Posted: Mon May 30, 2016 8:58 pm
by blackdot
did this the first time. i usually encode my stuff with adobe premiere, as it's the only program i have that seems capable. for hap alpha, i needed to encode with 32bit depth instead of the default 24bit for it in order to work (this makes sense of course as it's a channel more), however the file size blew up disproportionally.
The 24bit clip is 23Mb big, the 32bit clip 300Mb. Is this normal?
Re: encoding to hap alpha
Posted: Mon May 30, 2016 9:10 pm
by blackdot
wups sorry, rookie mistake. they dont actually have the same length. 2s vs 20s.
sorry
they're actually 150mb vs 300mb, which still seems odd to me as I think if you add a channel to RGB it should scale up by a third, but who knows, maybe that's the way things are

.
Re: encoding to hap alpha
Posted: Tue May 31, 2016 3:18 am
by Magic
I am not 100% sure about this, but I *think* the alpha channel is not compressed, or at least it's less compressed than the RGB channels. So the alpha channel actually ends up taking 3 times more space than each of the R/G/B channels.
Re: encoding to hap alpha
Posted: Tue May 31, 2016 7:42 am
by blackdot
hm okay, so everything works as it's supposed to then. i guess it doesnt matter anyway, as long as my ssd can keep up. and if not there would still be the option to make a ram disk.