Created attachment 267005 [details]
Test application

Hi,

I'm using gstreamer through QtMultimedia 5, and I feed Gstreamer with AppSrc because my files although local are encrypted.

When I started the application I simply passed the file URL as it wasn't encrypted yet, and so far all files were working, then when I started using AppSrc some formats stopped working, after some digging I found out that making Qt set GST_APP_STREAM_TYPE_STREAM instead of GST_APP_STREAM_TYPE_RANDOM_ACCESS on some mp3 made them play fine. It was a ok workaround till last week when I started testing with the 500GB of all sorts of files (it's an app for Jukebox machines). Then even with GST_APP_STREAM_TYPE_STREAM lots of videos didn't play well, so far I had even reported a bug in Qt about it but they were unable to reproduce it.

I talked with some of you at IRC and __Tim suggested me to send a test app, so I went on digging a simple app that didn't use Qt to try to see if Qt guys had done something wrong, I found these:
https://source.ridgerun.net/svn/leopardboarddm365/sdk/trunk/fs/apps/gst-plugins-base-0.10.23/src/tests/examples/app/

And just found out that these simple examples had the same issues as my Qt application, and I also found out that GST_APP_STREAM_TYPE_SEEKABLE is the type that plays now close to 100% of the files, but that doesn't make much sense according to the description as GST_APP_STREAM_TYPE_SEEKABLE vs GST_APP_STREAM_TYPE_RANDOM_ACCESS seems to be more about deliver speed than supporting formats.

I'm attaching a modified version that I played with (to make it look more like the Qt source code) that fails to play this file for example:
http://goo.gl/WODLFF 

Thanks