2019 Video Engine Bug

[AudioUproarBen]

Hi, I've recently updated from PT11 to PTU 2019.10 but I'm struggling with getting video to be displayed via a Blackmagic decklink mini monitors HDMI output. Along with the update the OS went from Mavericks to Mojave, update not fresh install.
I've found a video it likes (h264 .mp4), I can import this and it will play fine. Any video I import after this will play fine. If I import any other video first, I get no output on the TV but I can see it in the PT Video window. It seems it breaks the output, I can work around it by deleting all the videos from the clip list and removing all the video tracks, importing the known good video and then the video I want.
I've tried using a AJA Kona LHi video card but its no better.
I've tried 2019.12
I'll try 2019.6....
iMac with Decklink mini monitor in a magma chassis

Many Thanks

[danielsun_]

Hi Ben,

I would convert all your videos to the DNxHD codec and only use that codec for all video playback.

remove any other videos that have a different codec from your PT session.
Then import the DNxHD ones.



Good luck