Error: "Your GStreamer installation is missing a plug-in." In Running Qt Video Widget Example Run

[stackprogramer]

When i run example Qt Video Widget Example in Debian jessie , i select a mp3 file i can not play it,it returns errors:
i have even installed gstreamer...
how can play video and mp3 with this example
best regards stackprogramer

Warning: "No decoder available for type 'audio/mpeg, mpegversion=(int)1, mpegaudioversion=(int)1, layer=(int)3, rate=(int)44100, channels=(int)2, parsed=(boolean)true'."
Error: "Your GStreamer installation is missing a plug-in."

[SGaist]

Hi,

Did you also install the GStreamer plugin packages ?

[stackprogramer]

hi, thanks but i even install all plugin with this command:

apt-get install gstreamer0.10-plugins*

it has errors
Warning: "No decoder available for type 'video/x-h264, stream-format=(string)avc, alignment=(string)au, level=(string)3, profile=(string)constrained-baseline, codec_data=(buffer)0142c01effe100196742c01ed9c1e08feb011000000300100000030320f162e78001000568c9a1cb20, width=(int)480, height=(int)270, framerate=(fraction)25/1, pixel-aspect-ratio=(fraction)1/1, parsed=(boolean)true'."

[SGaist]

Check for the ffmpeg gstreamer plugin.

[stackprogramer]

thanks plugin-ffmpeg is not supported directly in debian jessie so i use this link for install it.

http://stackoverflow.com/questions/30326243/how-to-install-gstreamer0-10-ffmpeg-on-debian-8-jessie-no-installation-candidat

i installed from wheezy package now it can play mp3 but mp4 is has errors

Error: "GStreamer encountered a general stream error."

[stackprogramer]

finally i concluded for showing video with container format mp4 and code H.264/MPEG-4 AVC
i should install new tools on debian jessie
http://www.debiantutorials.com/how-to-install-ffmpeg-with-h-264mpeg-4-avc/