Phonon - Qt or KDE?

Trever Fischer tdfischer at
Mon Nov 14 19:18:10 GMT 2011

On Mon, November 14, 2011 8:31 am, todd rme wrote:
> 2011/11/14 Trever Fischer <tdfischer at>:
>> I would like to see Phonon be Qt. I can see a number of applications
>> for Phonon (hint: my employer is one major instance) that don't require
>> a full- fledged desktop framework and whatever other crazy awesome stuff
>> the Frameworks bring.
> The whole point of frameworks is to make sure that parts of KDE like
> phonon do NOT bring a full-fledged desktop framework.  That is why they are
> frameworks plural, breaking up KDE into individual pieces that can be used
> either completely independently or only relying on the mimimum other
> frameworks absolutely needed to do their job.
> So moving to Qt or sticking with KDE will have no impact on what
> phonon will pull in.  Phonon is and will remain independent of other parts
> of KDE.  The point of frameworks is to make more of KDE like phonon in
> this regard.
Perhaps I didn't fully form my position or English is hard since thats
pretty much what I was trying to articulate. Going back and re-reading, I
can't really make much sense of what I put :D

Trying to clarify a bit, I agree with this statement: "If it is Qt and
happens to deliver to KDE then it would make a whole lot of sense to move
to qtproject and continue to thrive there."

The question then becomes, I suppose, who uses Phonon, why do they, and
why don't others?

Here at Quasimoto, we make vending machines with fancy interactive
displays and stuff. We use Phonon for playing attract mode videos and
sound effects while using QML for the main interactive UI. At the moment,
we use QtMultimediKit for embedding videos in QML layouts but it is buggy,
needs some hacks, and seemingly optimized only for meego/maemon. Phonon is
used in QWidget designs. Some preliminary testing with Harald's GSOC
project of phonon elements for QML shows some amazing performance
increases and we'll definitely be switching to that and getting rid of
QWidget where it makes sense once "its done" ;)

Point is, Phonon makes an awesome toolkit for doing multimedia in Qt which
surpasses anything else out there. There aren't any KDE dependencies and
we have no reason to use any KDE bits since this is a single-user linux
environment point-of-sale system. All we need and use is a GUI toolkit, a
simple audio toolkit, and a couple of serial ports to drive expensive
linear actuators and read some sensors.

Again, I'd really appreciate it if some other third party who /wasn't/ a
KDE developer came in and gave opinions about this, as unlikely as that'd
> -Todd
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Trever Fischer (tdfischer)
Fedora Ambassador, KDE Hacker
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