我正在尝试为物理实验进行一些视频处理,并且我想在功能更强大的 Windows 台式计算机上进行,而不是在我的 Mac 笔记本电脑上进行。
以下代码在我的 Mac 上作为 Jupyter notebook 运行时就像做梦一样:
import matplotlib as mpl
from mpl_toolkits import mplot3d
import pims
import trackpy as tp
@pims.pipeline
def gray(image):
return image[:, :, 1] # Take just the green channel
frames = gray(pims.open('output.mp4'))
但在我的 Windows 机器上,我收到此错误:
---------------------------------------------------------------------------
UnknownFormatError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_12152/704954007.py in <module>
1 #Actually converts the video. Might be VERY processor intensive... or not?
----> 2 frames = gray(pims.open('output.mp4')) #Make the File Name whatever file you like!
~\miniconda3\lib\site-packages\pims\api.py in open(sequence, **kwargs)
207 warn(message)
208 exceptions += message + '\n'
--> 209 raise UnknownFormatError("All handlers returned exceptions:\n" + exceptions)
210
211
UnknownFormatError: All handlers returned exceptions:
<class 'pims.pyav_reader.PyAVReaderTimed'> errored: [Errno 22] Invalid argument: 'output.mp4'
<class 'pims.pyav_reader.PyAVReaderIndexed'> errored: [Errno 22] Invalid argument: 'output.mp4'
<class 'pims.imageio_reader.ImageIOReader'> errored: Could not load meta information
=== stderr ===
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200122
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
C:\Users\Callum\OneDrive - The University of Chicago\output.mp4: Invalid argument
<class 'pims.moviepy_reader.MoviePyReader'> errored: MoviePy error: failed to read the duration of file output.mp4.
Here are the file infos returned by ffmpeg:
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.2.1 (GCC) 20200122
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
output.mp4: Invalid argument
output.mp4 只是在 CCD 相机上拍摄的磨机视频文件的运行;我尝试将其转换为 .MOV,尝试使用不同相机拍摄的其他视频文件,并尝试通过 FFmpeg 运行文件以施加 30 fps 的帧速率;我尝试过的所有东西都可以在我的 Mac 上正常工作,并在我的 Windows 机器上引发上述错误。
作为参考,我今天早上在两台机器上都为这段代码安装了必要的包,所以它应该都是最新的并且在两台机器上都是一样的。
关于发生了什么的任何想法?谢谢!