Fast forward and backward time seeking (rewinding) with timeshift function
Currently the "timeshift" function only supports pausing and resuming playback. It's not possible even forward jump (can work around this by play with higher speed).
Rewinding live-stream require the addition of configuration options to set "timeshift" pre-bufor (for backward jump) size.
Rewinding live stream is very useful when VLC is used to play V4L or DVB devices.