render_video.md

Render Video

A. Generate trajectory, filter out floaters, and render a video

python tools/render_traj.py --output_path outputs/$NAME --filter --train 

The script will generate and save a ellipse trajectory according to the training cameras. --filter means filter out floaters in each bev pillar according to spatial distribution, and --train means use training cameras to generate trajectory. Please refer to the script for more control options.

B. Render mesh on appointed trajectory with Blender

First, follow the instrution here to install the blender environment. For video rendering, use the following command:

cd blender
python render_run.py --load_path <path to the mesh>  --traj_path <path to the trajectory> --config_dir <path of the render config>

By setting traj_path, you can apply the trajectory generated in the previous step. The config_dir for GauU-Scene and MatrixCity are provided in blender/render_cfgs.