[KPhotoAlbum] troubleshooting mplayerthumbs?

[Johannes Zarl]

Hi Tim,

Can you provide a little bit more detail on what exactly is working/not-
working? I.e. is KPA just sitting idle, not doing anything when new videos are 
added, or is it doing some work and just the end result is not displayed?

Regarding mplayerthumbs/kffmpegthumbnailer: Currently KPA directly invokes 
mplayer to get thumbnails. To get a vague idea of what could be the problem, 
you could try invoking mplayer manually:

mplayer -nosound -ss 10 -vf screenshot -frames 1 -vo png:z=9 SOME_VIDEO.EXT

Codewise, the thumbnailing is done inside the ImageManager. AFAIK you'll want 
to take a look at the classes VideoThumbnailsExtractor and 
ExtractOneVideoFrame.

HTH,
  Johannes

On Monday 23 July 2012 17:55:56 Timothee Groleau wrote:
> Hi there,
> 
> video thumbnailing with mplayerthumbs has not been working for me for some
> time in kphotoalbum. I've deferrered fixing it, and I don't remember when
> or how it broke (I'm gonna guess an upgrade to either konqueror or
> kphotoalbum).
> 
> I've decided I must finally fix it, but I'm not able to see any errors
> message anywhere. How should I go about troubleshooting?
> 
> Below are some info about my system,
> 
> gentoo amd64
> kphotoalbum 4.2 on kde 4.8.3
> mplayerthumbs-4.8.3 (with mplayer backend; because thumbnailing in
> konqueror doesn't work with phonon backend)
> mplayer-1.0_rc4_p20110322-r1
> 
> For reference, video thumbnailing works in konqueror, with setting enabled
> "Video Files (MPlayerThumbs)", and video playback works in kphotoalbum.
> video thumbnailing used to work in kphotoalbum, and the old thumbnails are
> still ok. I've tried installing kffmpegthumbnailer instead, and I've
> managed to set that up in konqueror, but had no success with kphotoalbum
> either.
> 
> In case it matters, I've re-emerged mplayerthumbs and then kphotoalbum
> again, to make sure it'd be compiled after, still no luck.
> 
> Any help would be much appreciated. Please let me know what other
> information or details about my setup I should send.
> 
> Thanks in advance!
> Tim.