"index 1 is out of bounds for dimension 0 with size 1"

Describe the bug Final step gives me a "index 1 is out of bounds for dimension 0 with size 1" error.

Desktop (please complete the following information):

• OS: Windows 10 64 bit 2004 19041.329
• Device Used: 3 different GPUs, GTX 1080ti, RTX 2080ti, RTX Titan.
• Setup Info: ffmpeg 20200628-4cfcfb3, Anaconda3 2020.02, PyTorch 1.5.1, Cuda Tool Kit 10.2, Nvidia GRD 451.67.

Additional context Other video files work successfully. I have tried rendering this file into different formats, such as extending its frame, using different formats (x264, x265), including/not including audio, and more. Console log: https://pastebin.com/i1ZrCaVf