I do audio mixing for video production but last months I work blinded - any video I try to load inside SO shows "No codec" and black screen.
I've tried every suggestion from this forum: different containers (MP4, MOV, AVI), different codecs (H.264, DivX), different sample rates and usb interfaces, low bitrates, clips without audio - nothing worked. But then I load Ableton as ReWire slave and load this clips into - they all worked and played in sync!
(but with awful window management as a result)
ps. I'm using StudioOne 4.1.3