Yellow triangle frame marker in VSE This is a lame question but, what is this yellow triangle marking a frame? I was trying out different shortcuts and I think I accidentally added it. I can't find it in the Blender docs.

The only reason I'm asking is because I'm having an audio sync issue when I render my video and I'm trying to hunt down the cause.
I think it is just a marker. You can add it by pressing M and delete by selecting it and pressing X

If you can't select it, uncheck Lock Markers option in the Marker menu.



You can find more info about the markers in Blender Manual:
https://docs.blender.org/manual/ko/dev/animation/markers.html