Sound/audio level in output is very low or voices cannot be heard properly. This is a known issue with a52dec downsampling (related to <=gst-plugins-a52dec-0.10.4). Reproducible: Sometimes Steps to Reproduce: 1.Vary vom DVD to DVD 2. 3. http://thoggen.net/download/index.html#known-issues
As gst-plugins-a52dec belongs to gst-plugins-ugly I don't know, if it's necessary to open an additional bug for the superior package. Please do this if it's essential to push gst-plugins-a52dec Thanks!
This is already fixed in 0.10.4-r1 (we added a patch), but anyway, I've done the bump.