File "av/video/frame.pyx", line 204, in av.video.frame.VideoFrame.pict_type.__set__, TypeError: an integer is required

Ubuntu 24.04.2 LTS, CUDA 12.4 Torch 2.5.1, have ffmpeg and
accelerate==1.6.0
av==14.0.1
gradio==5.25.2

error log as below:
=================
(video) tkadm@ubuntu2204:~/FramePack$ python demo_gradio_me.py

Currently enabled native sdp backends: ['flash', 'math', 'mem_efficient', 'cudnn']
Xformers is installed!
Flash Attn is installed!
Sage Attn is installed!
Namespace(share=False, server='0.0.0.0', port=10609)
Free VRAM 23.1300048828125 GB
High-VRAM Mode: False
Loading checkpoint shards: 100%|███████████████████████████████████████████| 4/4 [00:00<00:00, 4.77it/s]
Loading checkpoint shards: 100%|███████████████████████████████████████████| 3/3 [00:00<00:00, 13.33it/s]
transformer.high_quality_fp32_output_for_inference = True
* Running on local URL: http://0.0.0.0:10609

To create a public link, set `share=True` in `launch()`.
Unloaded DynamicSwap_LlamaModel as complete.
Unloaded CLIPTextModel as complete.
Unloaded SiglipVisionModel as complete.
Unloaded AutoencoderKLHunyuanVideo as complete.
Unloaded DynamicSwap_HunyuanVideoTransformer3DModelPacked as complete.
Loaded CLIPTextModel to cuda:0 as complete.
Unloaded CLIPTextModel as complete.
Loaded AutoencoderKLHunyuanVideo to cuda:0 as complete.
Unloaded AutoencoderKLHunyuanVideo as complete.
Loaded SiglipVisionModel to cuda:0 as complete.
latent_padding_size = 27, is_last_section = False
Unloaded SiglipVisionModel as complete.
Moving DynamicSwap_HunyuanVideoTransformer3DModelPacked to cuda:0 with preserved memory: 6 GB
100%|██████████████████████████████████████████████████| 25/25 [00:58<00:00, 2.34s/it]
Offloading DynamicSwap_HunyuanVideoTransformer3DModelPacked from cuda:0 to preserve memory: 8 GB
Loaded AutoencoderKLHunyuanVideo to cuda:0 as complete.
Unloaded AutoencoderKLHunyuanVideo as complete.

Traceback (most recent call last):
File "/home/tkadm/FramePack/demo_gradio_me.py", line 294, in worker
save_bcthw_as_mp4(history_pixels, output_filename, fps=30)
File "/home/tkadm/FramePack/diffusers_helper/utils.py", line 279, in save_bcthw_as_mp4
torchvision.io.write_video(output_filename, x, fps=fps, video_codec='h264', options={'crf': '0'})
File "/home/tkadm/miniconda3/envs/video/lib/python3.11/site-packages/torchvision/io/video.py", line 140, in write_video
frame.pict_type = "NONE"
^^^^^^^^^^^^^^^
File "av/video/frame.pyx", line 204, in av.video.frame.VideoFrame.pict_type.__set__
TypeError: an integer is required
Unloaded DynamicSwap_LlamaModel as complete.
Unloaded CLIPTextModel as complete.
Unloaded SiglipVisionModel as complete.
Unloaded AutoencoderKLHunyuanVideo as complete.
Unloaded DynamicSwap_HunyuanVideoTransformer3DModelPacked as complete.

^CKeyboard interruption in main thread... closing server.

(video) tkadm@ubuntu2204:~/FramePack$ ffmpeg -version

ffmpeg version 7.0.2-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
libavutil 59. 8.100 / 59. 8.100
libavcodec 61. 3.100 / 61. 3.100
libavformat 61. 1.100 / 61. 1.100
libavdevice 61. 1.100 / 61. 1.100
libavfilter 10. 1.100 / 10. 1.100
libswscale 8. 1.100 / 8. 1.100
libswresample 5. 1.100 / 5. 1.100
libpostproc 58. 1.100 / 58. 1.100

I ckeck the file frame.pyx", line 204, as below:

@property
def pict_type(self):
"""Returns an integer that corresponds to the PictureType enum.

Wraps :ffmpeg:`AVFrame.pict_type`

:type: int
"""
return self.ptr.pict_type

I think it should be call ffmpeg to combine the image to mp4, but don't work.

Start in diffusers_helper/utils.py at save_bcthw_as_mp4 and inspect its torchvision.io.write_video call. Reproduce the failure with the listed Python package versions, especially av==14.0.1, and trace the pict_type assignment shown in the error. Done means the generated video is written without the TypeError.

Written by the indexing model from the issue text.