@Anonymous_ 

I don't know if you've discovered this, but (on the Android app - not sure about iOS) you can use two fingers on the timeline bar to stretch (or pinch to shrink) the time scale bar to be a bit more useful/precise.

With the enlarged timeline scale, it's a bit easier to scroll forward/back on a video and while seeing the timing.

No audio in playback speed other than 1x is typical (altough I know it's possible with other video players).  I agree that the playback options in the app could use some improvement.

Alternatively, if your recording(s) are on a MicroSD, then using the card on a PC to view the videos might provide a better experience.  Another altrenative would be to download the videos of interest to your device and then using another video player or sending them to a PC.

Hope this helps!