The VideoLAN Forums

Thanks for pointing this out. This is a brand new machine, never thought Microsoft would configure the desktop as a OneDrive folder by default. Later today I will duplicate my problem and send you the resulting debut message.

I see from the debug dialogue there is an error reporter: avcodec error: hardware acceleration picture allocation failed Here is the entire message: main debug: VoutDisplayEvent 'mouse button' 0 t=8 main debug: VoutDisplayEvent 'mouse button' 0 t=9 main debug: auto hiding mouse cursor qt debug: MRL(...

Converting an mp4/H.265 video file to mp4/H.264 results in, basicly, an empty file (only about 40KB).