In my last post, I said I had trouble getting Rygel’s tracker backend to function and assumed that it was expecting an older version of the API. It turns out I was incorrect and the problem was due in part to Ubuntu specific changes to the Tracker package and the unusual way Rygel was trying to talk to Tracker.
The Tracker packages in Ubuntu remove the D-Bus service activation file for the “org.freedesktop.Tracker” bus name so that if the user has not chosen to run the service (or has killed it), it won’t be automatically activated. Unfortunately, instead of just calling a Tracker D-Bus method, Rygel was trying to manually activate Tracker via a StartServiceByName() call. This would fail even if Tracker was running, hence my assumption that it was a tracker API version problem.
This problem will be fixed in the next Rygel release: it will call a method on Tracker directly to see if it is available. With that problem out of the way, I was able to try out the backend. It was providing a lot more metadata to the PS3 so more files were playable, which was good. Browsing folders was also much quicker than the folder back end. There were a few problems though:
- Files are exposed in one of three folders: “All Images”, “All Music” or “All Videos”. With even a moderate sized music collection, this is unmangeable. It wasn’t clear what order the files were being displayed in either.
- There was quite a long delay before video playback starts.
When the folder back end fixes the metadata and speed issues, I’d be inclined to use it over the tracker back end.
Getting video transcoding working turned out to require a newer GStreamer (0.10.23), the “unstripped” ffmpeg libraries and the “bad” GStreamer plugins package from multiverse. With those installed, things worked pretty well. With these dependencies encoded in the packaging, it’d be pretty painless to get it set up. Certainly much easier than setting things up in MediaTomb’s configuration file.Read more