简易命令：./scripts/inference.sh configs/halpe_26/resnet/256x192_res50_lr1e-3_1x.yaml pretrained_models/halpe26_fast_res50_256x192.pth test.mp4
原装命令：python scripts/demo_inference.py --cfg configs/coco/resnet/256x192_res50_lr1e-3_1x.yaml --checkpoint pretrained_models/fast_res50_256x192.pth --video t1.mp4 --gpus 0,1 --outdir result --detector yolo --save_img --save_video