media-hub-server uses 100% CPU while playing video (and video fails to play)

[Jean-Baptiste Lallement]

krillin: #11

This video http://samplemedia.linaro.org/Mmtest/media_api/video/H264_500_AAC_128.3gp (h264/aac) makes media-hub-server consume 100% CPU and renders the device unusable

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: media-hub 1.0.0+14.10.20140818-0ubuntu1 [origin: Ubuntu RTM]
Uname: Linux 3.4.67 armv7l
ApportVersion: 2.14.7-0ubuntu1
Architecture: armhf
Date: Thu Sep 4 17:34:59 2014
InstallationDate: Installed on 2014-09-04 (0 days ago)
InstallationMedia: Ubuntu Utopic Unicorn (development branch) - armhf (20140904-030254)
SourcePackage: media-hub
UpgradeStatus: No upgrade log present (probably fresh install)

[Michael Frey (mfrey)]

how did you test this? I tried copying this to the device using mtp and it does not show under the video scope. If this was played in the browser, that does not use media-hub.

[Jean-Baptiste Lallement (jibel)]

You can play it from the filemanager for example, or directly with mediaplayer-app from CLI.

[Jim Hodapp (jhodapp)]

Does this video play for you on the desktop using Totem? One other thing to try, does this video play for you on Krillin with Android loaded on it?

[Pat McGowan (pat-mcgowan)]

This is still the case - see the bug duped here which has an mp4

For these videos the mediascanner fails to process them the first time but they do show in the scope on a reboot (which seems a separate issue) The following is reported in mediascanner and media-hub logs:

[Err, h264_dec_init] Fail to open Vdec Drv H264 instance! -11
[Err] Error code -10
[Err, h264_dec_deInit] Invalid input argument
[Err] Error code -1
Error when adding new file: Unable to discover file /home/phablet/Videos/H264_500_AAC_128.3gp

The media-hub-server may or may not show up in top using 100% cpu but the symptom is the same, the phone is alive but extremely sluggish and appears frozen. Killing the server process restores normal conditions.

[Pat McGowan (pat-mcgowan)]

not sre we can find a fix but will add to track as symptoms quite bad

[Pat McGowan (pat-mcgowan)]

I submitted bug #1421797, if the unsupported video did not show up in the scope this hang would be far less likely to be hit by a user.

[Jim Hodapp (jhodapp)]

This commit by Alfonso fixes this bug as well: https://github.com/alfonsosanchezbeato/gst-plugins-bad/commit/794ed7f620c08e8fbc4cf17b2e7558386603e15c

[Launchpad Janitor (janitor)]

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