We discovered when testing qt 4.8 with phonon gstreamer stack that qmediaplayer examples would only play limited selection of media types compared to enumerated capabilities. One of our developers found when single-stepping through gstreamer plugin loader that dlopen() flag was conditionally set to RTLD_LAZY. When forcing that flag on, a lot more audio and video playback codecs started working finally.

We saw that qt 4.8.4 was recently released, and been trying that for any bugfixes and performance improvements. There have been some small improvements in general noticed started with qt 4.8.3, but still concerned about video streaming ability on our embedded linux device (arm cortex a9, fpu, no neon no video accel). Any performance tuning tips?