Since updating to version 23.05.07, my local video playback of videos exported from Shotcut has been appalling (in five different media player apps). Strangely though if I upload a video to YouTube, it plays there fine. Here are my export settings (which were actually reset/default):
Audio plays fine but I essentially get black screen or if I click around on the timeline during playback, I get video but at a different position to the audio. The video file is here (which is in 9:16 aspect ratio for a Youtube short).
I would be greatful for any help or advice please.