When I press render, the screen blinks white for at least 3 seconds which leads to a frozen render screen. Render Time, Frames rendered and Time left all have 0 (seconds). I am trying to render 100% first person, no shaders (however I have optifine installed) with 62,000+ frames needed to render. I am rendering the video with default MP4 settings at 60 fps, I have removed all the previous mods and tried without my texture pack. I have Mac OS, 4 GB ram (don't know if the ram is the issue), plenty of storage.
Info:
Forge 1.8.9 - 11.15.1.2318
replaymod-1.8.9-2.0.1
OptiFine_1.8.9_HD_U_H5