[KPhotoAlbum] New video backend

[Andreas Schleth]

Hi Jesper,

I did just that, as I am curious about the vlc back end.
First point: in openSUSE, the development package for libvlc is *not*
"libvlc-devel" as usual for suse but "vlc-devel" (at least in the
Packman repo). This solved, I tried the old and new backend (vlc and phonon)
aaand ... surprise!
I did not find any difference.
However, this comes as no surprise to me, as I use vlc as backend for
phonon since quite a time.
There is a tool called "phononsettings" which lets you choose vlc as a
backend.
Anyway, this is good news: all works as expected :-)

I found the dialog to change the backend and switched between vlc and
phonon. The dialog appears only on the first try as an opener before you
play the video. On the second try you find it in the settings - viewer,
just as expected

So, as I only use phonon as an intermediate layer, the new backend just
eliminates the man in the middle.
And it works just the same:
Virtually all video plays OK, but you have no controls (switch audio
channels, select video aspect ration and so on - at least I did not find
the magic button to activate any menu).

Therefore, I usually use the right-click "invoke external program ...
vlc" for video to get all controls. Except for short clips ("Hi, my name
is ... :-)").

Anyway, as everything seems to play, I'll use it "in prrroduction" (as
our SAP guys say) and see what happens.

Best regards, Andreas


Am 28.07.21 um 11:12 schrieb Jesper K. Pedersen:
>
> Hi,
>
> If you are using KPA from git, then please fetch the lastest version
> and give it a try.
>
> I've reworked the video backend, so it now can use one of Phonon,
> QtAv, and VLC
>
> Here is the motivation for this change:
>
> There are unfortunately no video player which just works out of the
> box for everyone.
> KPhotoAlbum therefore comes with three different back-ends, choose the
> one that works the best for you
>
> *VLC* seems to be the best supported video player back-end, meaning it
> can play most video formats.
> It has one drawback though, it requires X11.
> If you use Wayland, then you will find that the videos shows up in a
> window of their own, and in this case
> VLC is likely not a very good fit for you. If on the other hand you do
> use X11 then VLC is likely your best choice.
>
> Traditionally KPhotoAlbum has been using *Phonon* as the video player
> back-end. We've unfortunately seen it crash
> on many different video formats - possibly because our system wasn't
> correctly configured.
> If this is the case for you (and you can't use VLC), then try the
> *QtAV* back-end,
> which seems to support a lot of formats (everything we threw at it).
> *QtAV* unfortunately also has a drawback - it seems to get slightly
> out of sync between video and audio.
>
> Cheers
> Jesper.
>
>
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