Music App: Sometimes the "length" of the song is displayed as 0:00

Thank you for taking the time to report this bug and helping to make Ubuntu better.

I have not been able to reproduce this myself, if the duration does become 0:00 I would expect it to change to the right value after 1 second of playback anyway. Therefore are you able to supply more information about the files you are using, eg format? Furthermore the music-app (application-click-com.ubuntu.music_music_2.0.XYZ.log) and media-hub (media-hub.log) logs from /home/phablet/.cache/upstart could be useful.

I aws able to reproduce this: http://i.imgur.com/J5N6OSg.png

However, at first glance, I did not see anything interesting in the logs.

If you can get this to occur again things I would be interested in knowing:
* Is the small progress bar (below toolbar in the pages/queue) correct?
* If you tap on the slider does it fix itself (it could be stuck in 'seek' mode)?

Otherwise it would appear that the MediaPlayer.duration is 0.

Ok, I was able to reproduce again. 1) The small progress bar is black (at 0:00). 2) Tapping the progress bar just restarts the song at 0:00.

One thing I've noticed is that sometimes the duration doesn't get updated for almost 1 second after the song starts.

@Victor, Thank you to help to reproduce and capture things.
@Andrew, Please let me know if you need me to do anything.

An update on this. I'm running vivid r159 which has some/all of the "media-hub3" updates in it and it doesn't seem to fix the issue--as I've been able to reproduce it. However, in the 3 times I've been able to reproduce to this to date, I've only been able to do so while shuffling my whole library. Playing a single album does not seem to cause the issue--but that is not conclusive evidence. Additionally, I had tried to reproduce using just an album of MP3s vs the same album converted to OGG--but neither failed.

I'm running latest on arale and am getting this:-

http://people.canonical.com/~alan/screenshots/device-2015-04-28-150511.png

It has been suggested that this is a rare race condition somewhere, adding media-hub as also affects as it is possible the issue is there.

While testing this silo, I could crash the media-hub going forwards and backwards repeatedly.

This bug was fixed in the package qtubuntu-media - 0.7.1+15.10.20150522-0ubuntu1

---------------
qtubuntu-media (0.7.1+15.10.20150522-0ubuntu1) wily; urgency=medium

  [ Jim Hodapp ]
  * Make sure that stopped and ready (same state for QMediaPlayer) are
    reported to the client app. (LP: #1435088)

qtubuntu-media (0.7.1+15.04.20150513.1-0ubuntu1) vivid; urgency=medium

  [ CI Train Bot ]
  * New rebuild forced.

  [ Jim Hodapp ]
  * Fix duration() not getting reported after playback starts. (LP:
    #1438115)

 -- CI Train Bot <email address hidden> Fri, 22 May 2015 17:36:57 +0000

This issue still could be reproduced on arale/vivid r4 sometimes, and sometimes the length is displayed as 0:00 just for the first 1~2 seconds, then actual length will shown.

$ system-image-cli -i
current build number: 4
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2015-05-28 05:26:35
version version: 4
version ubuntu: 20150527
version device: 20150522-a851049
version custom: 20150526-719-5-24

@Evan: yes, I haven't had a working arale to develop the fix with, but now I have one so I'll be finishing off this bug soon.