Playing a video from the photo roll exhibits odd behaviour if a video is currently loaded in the media player

[Brendan Donegan]

Prerequisites:

There must be two videos loaded on the phone, at least one which must have been taken with the phones camera and stored in the photo roll

Steps to reproduce:

1. Navigate to the Videos scope
2. Tap on a video
3. Tap on the Play button
4. Let the video play for some time and then open the camera application
5. Swipe left to get to the photo roll and swipe to any video in the photo roll
6. Tap on the play button

Expected result:

The video from the photo roll plays properly in the media player

Actual result:

The video is corrupted in some way - usually the video that was already loaded is shown as a still but with the sound of the video from the photo roll. Sometimes the correct video will be played but in the wrong aspect ratio.

current build number: 176
device name: krillin
channel: ubuntu-touch/ubuntu-rtm/14.09-proposed
last update: 2014-12-11 14:44:52
version version: 176
version ubuntu: 20141211
version device: 20141209-cae2b5f
version custom: 20141119-442-21-160

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Arthur Mello (artmello)]

This QML application also triggers the behavior mentioned on this bug.

Steps to reproduce:
1. Play some video from the Video Scope
2. Start the attached app (i.e. qmlscene video_play_test.qml ----desktop_file_hint=/usr/share/applications/<some_file>.desktop)
3. Tap on some of the videos file names listed by the app (it will list videos recorded by the camera-app)

Expected result: The video selected plays properly in the media player

Actual result: The video is corrupted, usually the video that was already loaded is shown as a still but with the sound of the selected video.

Basically what we found during the tests is that if an application calls Qt.openUrlExternally("video://sample.mp4") after a video is playing from Video Scope, the bug does not reproduce. But if we use a VideoOutput with Camera source (the case for the attached app and for camera-app) the issue happens.

[Arthur Mello (artmello)]

logcat when the issue happens

[Bill Filler (bfiller)]

Based on the logs and the sample, this appears to be an issue with either mediahub or video backend somewhere.

[Jim Hodapp (jhodapp)]

The issue definitely lives deeper than media-hub, but I'm not exactly sure which lower component quite yet so I'll leave media-hub on the affected list for now. This same issue shows up if you unlock the welcome screen while a video is loaded and the mediaplayer-app is in the foreground when locked. Once the issue is solved for one of these cases, it should be solved for all of them.

[Jean-Baptiste Lallement (jibel)]

Fixed,. The video is playing nearly properly see bug https://bugs.launchpad.net/ubuntu/+source/qtubuntu-media/+bug/1504586 for the remaining issue with the wrong orientation.