**System Information**
windows 7 64 bit sp1
**Blender Version**
Broken: blender 2.77.1 7da189b
Worked: (optional)
Rendering in the VSE will crash on some frame, it's happened in the 2.77a and the daybuilder version(2.77.1 7da189b), 2.76b works fine
**Exact steps for others to reproduce the error**
I don't know what caused that, I tried lots change, it's still happen, until I try this in blender 2.76b. I can't redo this, the source file too big for upload. I am sorry, just post it at here, hope someone encountered the same problem to confirm this. thanks.