[FEATURE ADD] Rewrite handling of matplotlib writing to files through FFmpeg directly

[HunterAP23]

Describe the feature that is being tested/implemented
The current method of writing graph files is that they are dependent on matplotlib's functionality with FFmpeg.
This causes issues when some settings that worked previously no longer do so.
This should rewrite the logic to instead output the graph from matplotlib directly into an external FFmpeg process.

• Need to check if this is even possible

List any relations to other issues in this repository or in other repositories
N/A