An error occurred "Location not found" after automatically installing the missing gstreamer plugins.

[Shih-Yuan Lee]

Ubuntu: 12.04
totem: 3.0.1-0ubuntu21

There is a feature of totem that it can detect the missing gstreamer plugins
and install them automatically.
It will pop out this message after it finished the installation of gstreamer
plugins.
However totem will work normally after we reopen it.

Reproduce steps:
1. Remove gstreamer0.10-ffmpeg and gstreamer0.10-plugins-ugly if they are installed.
2. Download Wildlife.wmv from http://archive.org/details/Windows7WildlifeSampleVideo
3. Open Wildlife.wmv by totem.

Relative to Bug #1041287.

[Didier Roche-Tolomelli (didrocks)]

Iain, I would appreciate if you can get some time to look at this one. Thanks :)

[Iain Lane (laney)]

Hey FourDollars, I tried your patch (after uploading sessioninstaller for #1042231), but I still can't get it to work. It seems like the uri and suburi can't be retrieved from ctx->bvw when trying to reload the file.

,----
| uri: (null)
| suburi: (null)
|
| ** (totem:21923): CRITICAL **: bacon_video_widget_open: assertion `mrl != NULL' failed
`----

I had to backport the upstream patch to separate out subtitle loading from the loading of the main video file, so maybe something went wrong there.

Do you have any clue or a working port of your patch to Quantal's totem? :-)

[Shih-Yuan Lee (fourdollars)]

Hi Iain,

I don't know why my previous patch doesn't work now.
But I have another idea to fix this problem.
The idea is to add a new signal in bacon, such as 'codecs-sync', to re-open the same media source again.
After I make this patch and verify it, I will attach it here.

[Bear Yang (gywxme)]

Sorry for my knowledge less in Totem field.
Could you please tell me the details steps that how to reproduce the bug.

[Shih-Yuan Lee (fourdollars)]

Reproduce steps:
1. Remove gstreamer0.10-plugins-ugly if it is installed.
2. Download Wildlife.wmv from http://archive.org/details/Windows7WildlifeSampleVideo
3. Open Wildlife.wmv by totem.

[Shih-Yuan Lee (fourdollars)]

Revised reproduce steps:

1. Remove gstreamer0.10-ffmpeg and gstreamer0.10-plugins-ugly if they are installed.
2. Download Wildlife.wmv from http://archive.org/details/Windows7WildlifeSampleVideo
3. Open Wildlife.wmv by totem.

[Bear Yang (gywxme)]

I can reproduce the bug following the instructions upon.

After .deb(pluings-ugly/gstreamer0.10-ffmpeg) install online finished. A error dialog box will be popup, the message is below:

"- An error occurred"
" Location not found"
It has been proved that the message upon is throw out by totem(source: 3.0.1).

But if I install the .deb(pluings-ugly/gstreamer0.10-ffmpeg) manually, and then launch totem, it will work smoothly with the wmv file. that means, seem the plugins without problem

From my poor knowledge in this field, seems totem can not realized that the plugin has been updated from (online/command line) installation after it lanuched.
But totem use gstreamer as it's backend, gstreamer reponsed for all plugins initialization.
The problem become more complicated.

My question now is what is the expected behavior after the reproduce steps. to reboot the application with a warning message or let totem play the wmv without any problem without any alert.

[James M. Leddy (jm-leddy)]

Straight applying the patch from the upstream version didn't work:

bacon-video-widget-gst-0.10.c: In function 'bacon_video_widget_get_property':
bacon-video-widget-gst-0.10.c:2994:43: error: 'BaconVideoWidgetPrivate' has no member named 'subtitle_uri'
make[4]: *** [libbaconvideowidget_la-bacon-video-widget-gst-0.10.lo] Error 1
make[4]: Leaving directory `/home/james/src/totem-3.0.1/src/backend'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/james/src/totem-3.0.1/src'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/james/src/totem-3.0.1'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/james/src/totem-3.0.1'
make: *** [debian/stamp-makefile-build] Error 2

[Pascal Morin (pcm689)]

@James, Any update on this case?

[James M. Leddy (jm-leddy)]

Hi Pascal,

We don't have a patch that fixes the problem yet. Once upstream fixes it we can take their patch back and use that, but Ubuntu engineering doesn't really do development work on Totem.

[Yong Jie Huang (yj.huang)]

 When after automatically installing and open the *.wma file type will show an error message "Location not found".
 * Recommend to add gstreamer0.10-ffmpeg in Depends list.

[James M. Leddy (jm-leddy)]

We're closing the issue becuase the OEM has decided for now that this is a low priority.

[Robert Wei (robertwy)]

Experimental report:
  system: Precise i386
  1. remove gstreamer0.10-plugins-ugly
  2. Open a terminal in unity and type "totem [enter]"
  3. Drag and drop the "Wildlife.wmv" file into the playlist of totem
  4. While starting to play it, totem ask to install the Advanced Streaming Format (ASF) demuxer,
        agree it and go through the install.
  5. The error message pop out, in the terminal it left messages like this:

** Message: Missing plugin: gstreamer|0.10|totem|Advanced Streaming Format (ASF) demuxer|decoder-video/x-ms-asf (Advanced Streaming Format (ASF) demuxer)
/usr/lib/python2.7/dist-packages/gobject/constants.py:24: Warning: g_boxed_type_register_static: assertion `g_type_from_name (name) == 0' failed
  import gobject._gobject
** Message: Missing plugins installed. Updating plugin registry ...
** Message: Plugin registry updated, trying again.
** Message: Error: No URI set
gstplaybin2.c(3824): setup_next_source (): /GstPlayBin2:play

  6. Click on the play button, the error message will pop out again. And so is the last two lines in the terminal.
  7. Drag and drop the "Wildlife.wmv" file into the playlist again, it make the second item in it.
  8. Double click on the first "Wildlife.wmv" that is already on play, got no result.
  9. Double click on the second "Wildlife.wmv", it goes on normally.

I think restart the playing as a new file with some statement may bypass this issue, though bug could still there.