【已解决】moviepy视频剪辑TypeError: must be real number, not NoneType问题

MMAction2中：基于人体姿态预测动作标签

!python demo/demo_video_structuralize.py --skeleton-stdet-checkpoint checkpoints/posec3d_ava.pth \
    --det-config demo/faster_rcnn_r50_fpn_2x_coco.py \
    --det-checkpoint checkpoints/faster_rcnn_r50_fpn_2x_coco_bbox_mAP-0.384_20200504_210434-a5d8aa15.pth \
    --pose-config demo/hrnet_w32_coco_256x192.py \
    --pose-checkpoint checkpoints/hrnet_w32_coco_256x192-c78dce93_20200708.pth \
    --skeleton-config configs/skeleton/posec3d/slowonly_r50_u48_240e_ntu120_xsub_keypoint.py \
    --skeleton-checkpoint checkpoints/posec3d_k400.pth \
    --use-skeleton-stdet \
    --use-skeleton-recog \
    --label-map-stdet tools/data/ava/label_map.txt \
    --label-map tools/data/kinetics/label_map_k400.txt

之后显示以下消息后，表明正在构建和编写视频：

Moviepy - Building video demo/test_stdet_recognition_output.mp4.
Moviepy - Writing video demo/test_stdet_recognition_output.mp4

但出现以下错误提示：

Traceback (most recent call last):
  File "demo/demo_video_structuralize.py", line 786, in <module>
    main()
  File "demo/demo_video_structuralize.py", line 779, in main
    vid.write_videofile(args.out_filename)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\decorators.py", line 54, in requires_duration
    return f(clip, *a, **k)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\decorators.py", line 135, in use_clip_fps_by_default
    return f(clip, *new_a, **new_kw)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\decorator.py", line 232, in fun
    return caller(func, *(extras + args), **kw)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\decorators.py", line 22, in convert_masks_to_RGB
    return f(clip, *a, **k)
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\video\VideoClip.py", line 300, in write_videofile
    ffmpeg_write_video(self, filename, fps, codec,
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 213, in ffmpeg_write_video
    with FFMPEG_VideoWriter(filename, clip.size, fps, codec = codec,
  File "C:\Users\HASEE\miniconda3\lib\site-packages\moviepy\video\io\ffmpeg_writer.py", line 88, in __init__
    '-r', '%.02f' % fps,
TypeError: must be real number, not NoneType

通过参考网友建议：

python – 每当尝试将 write_videofile 运行到 moviepy 中的剪辑时，都会出现 “TypeError: must be real number, not NoneType” – IT工具网 (coder.work)

最佳方式是升级moviepy安装包

pip install moviepy --upgrade

果然，在升级moviepy安装包之后bug真的解决了！亲测有效，强力推荐！！！