The mp4 file size is the size of the video of the specified dimensions. While the 264 size is the size of the bitstream having 15 different levels. These levels are a mixture of various image scales
Optical flows associated with our work "We're Not Using Videos Effectively: An Updated Domain Adaptive Video Segmentation Baseline" See the [github](https://github.com/SimarKareer/UnifiedVideoDA) for
